Terms starting with letter p

Color key: WebIDL CSS Markup HTTP

p (markup element) §: Defined in HTML; Referenced in execCommand, CSS Cascading 4, CSS Cascading 5, CSS Images 4, CSS Syntax 3, HTML Accessibility API Mappings 1.0, ARIA in HTML, Selectors 4, WAI-ARIA, WAI-ARIA; Related terms: markup attribute align
JsonWebKey.p (WebIDL dictionary member) §: Defined in Web Cryptography API
DOMQuad.p1 (WebIDL attribute) §: Defined in Geometry Interfaces 1
DOMQuadInit.p1 (WebIDL dictionary member) §: Defined in Geometry Interfaces 1
DOMQuad.p2 (WebIDL attribute) §: Defined in Geometry Interfaces 1
DOMQuadInit.p2 (WebIDL dictionary member) §: Defined in Geometry Interfaces 1
"p256dh" (value for PushEncryptionKeyName WebIDL enumeration) §: Defined in Push API
"p3" (value for ColorGamut WebIDL enumeration) §: Defined in Media Capabilities
p3 (CSS value for color-gamut descriptor of @media @rule ) §: Defined in Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
DOMQuad.p3 (WebIDL attribute) §: Defined in Geometry Interfaces 1
DOMQuadInit.p3 (WebIDL dictionary member) §: Defined in Geometry Interfaces 1
DOMQuad.p4 (WebIDL attribute) §: Defined in Geometry Interfaces 1
DOMQuadInit.p4 (WebIDL dictionary member) §: Defined in Geometry Interfaces 1
package (markup element) §: Defined in EPUB 3.3
package document (concept) §: Defined in EPUB 3.3
PackAndPostMessage (algorithm) §: Defined in Streams
PackAndPostMessageHandlingError (algorithm) §: Defined in Streams
OpusEncoderConfig.packetlossperc (WebIDL dictionary member) §: Defined in Opus WebCodecs Registration
USBIsochronousInTransferResult.packets (WebIDL attribute) §: Defined in WebUSB API
USBIsochronousOutTransferResult.packets (WebIDL attribute) §: Defined in WebUSB API
RTCInboundRtpStreamStats.packetsDiscarded (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCIceCandidatePairStats.packetsDiscardedOnSend (WebIDL dictionary member) §: Defined in WebRTC Statistics
USBEndpoint.packetSize (WebIDL attribute) §: Defined in WebUSB API
RTCReceivedRtpStreamStats.packetsLost (WebIDL dictionary member) §: Defined in WebRTC Statistics
WebTransportConnectionStats.packetsLost (WebIDL dictionary member) §: Defined in WebTransport
RTCIceCandidatePairStats.packetsReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCReceivedRtpStreamStats.packetsReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCTransportStats.packetsReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
WebTransportConnectionStats.packetsReceived (WebIDL dictionary member) §: Defined in WebTransport
RTCIceCandidatePairStats.packetsSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCSentRtpStreamStats.packetsSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCTransportStats.packetsSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
WebTransportConnectionStats.packetsSent (WebIDL dictionary member) §: Defined in WebTransport
pad (CSS descriptor for @counter-style ) §: Defined in CSS Counter Styles 3
CSSCounterStyleRule.pad (WebIDL attribute) §: Defined in CSS Counter Styles 3
MLOpSupportLimits.pad (WebIDL dictionary member) §: Defined in Web Neural Network API
MLGraphBuilder.pad(input, beginningPadding, endingPadding, options) (WebIDL operation) §: Defined in Web Neural Network API
Padding (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Backgrounds 3, CSS Inline Layout 3, CSS Overflow 3, CSS Ruby Annotation Layout 1, CSS Sizing 3, CSS Text 4
padding (CSS property) §: Defined in CSS Box Model 3 , CSS Box Model 4 , CSS 2.1 , CSS 2.2; Referenced in CSS Box Alignment 3, CSS Backgrounds 3, CSS Logical Properties 1, CSS Rhythmic Sizing, CSS Ruby Annotation Layout 1, CSS Scroll Anchoring 1, CSS Scroll Snap 1, CSS Sizing 3, CSS Speech 1, CSS Table 3, CSS Text 3, CSS Text 4, CSS Typed OM 1, CSS Values 4; Related terms: CSS value logical
"padding" (value for CSSBoxType WebIDL enumeration) §: Defined in CSSOM View
MLConv2dOptions.padding (WebIDL dictionary member) §: Defined in Web Neural Network API
MLConvTranspose2dOptions.padding (WebIDL dictionary member) §: Defined in Web Neural Network API
MLPool2dOptions.padding (WebIDL dictionary member) §: Defined in Web Neural Network API
padding area (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Backgrounds 3, CSS Fragmentation 3, CSS Fragmentation 4
padding box (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Positioned Layout 4, CSS Backgrounds 3, CSS Overflow 3
padding box (concept) §: Defined in CSS 2.1
padding edge (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Borders and Box Decorations 4, CSS Backgrounds 3, CSS Overflow 3, CSS Positioned Layout 3, CSS User Interface 4, CSSOM View
padding edge (concept) §: Defined in CSS 2.1
padding properties (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Sizing 3
padding-block (CSS property) §: Defined in CSS Logical Properties 1; Referenced in CSS Typed OM 1
padding-block-end (CSS property) §: Defined in CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSSOM
padding-block-start (CSS property) §: Defined in CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSSOM
padding-bottom (CSS property) §: Defined in CSS Box Model 3 , CSS Box Model 4 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Logical Properties 1, CSS Paged Media 3, CSS Positioned Layout 3, CSS Typed OM 1, CSS User Interface 3, CSS Values 4, CSSOM
padding-box (CSS value for background-clip ) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
padding-box (CSS value for background-origin ) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
padding-box (CSS value for <box>, <coord-box> type, <geometry-box> type, <layout-box> type, <paint-box> type, <shape-box> type, <visual-box> type ) §: Defined in CSS Box Model 3 , CSS Box Model 4
padding-box (CSS value for mask-clip ) §: Defined in CSS Masking 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
padding-box (CSS value for mask-origin ) §: Defined in CSS Masking 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
padding-box (CSS value for block-step-insert ) §: Defined in CSS Rhythmic Sizing
padding-box (CSS value for <shape-box>, shape-outside property ) §: Defined in CSS Shapes 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
padding-box (CSS value for fill-origin ) §: Defined in CSS Fill and Stroke 3
padding-box (CSS value for stroke-origin ) §: Defined in CSS Fill and Stroke 3
padding-inline (CSS property) §: Defined in CSS Logical Properties 1; Referenced in CSS Typed OM 1
padding-inline-end (CSS property) §: Defined in CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSSOM
padding-inline-start (CSS property) §: Defined in CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSSOM
padding-left (CSS property) §: Defined in CSS Box Model 3 , CSS Box Model 4 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Logical Properties 1, CSS Positioned Layout 3, CSS Typed OM 1, CSS User Interface 3, CSS Values 4, CSSOM
padding-right (CSS property) §: Defined in CSS Box Model 3 , CSS Box Model 4 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Logical Properties 1, CSS Positioned Layout 3, CSS Typed OM 1, CSS User Interface 3, CSS Values 4, CSSOM
padding-top (CSS property) §: Defined in CSS Box Model 3 , CSS Box Model 4 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Logical Properties 1, CSS Paged Media 3, CSS Positioned Layout 3, CSS Typed OM 1, CSS User Interface 3, CSS Values 3, CSS Values 4, CSSOM
<padding-width> (concept) §: Defined in CSS 2.1
<padding-width> (CSS type) §: Defined in CSS 2.2; Related terms: CSS value <length>, CSS value <percentage>
PADebugModeOptions (WebIDL dictionary) §: Defined in Private Aggregation API; Related terms: PADebugModeOptions.debugKey; see also WebIDLPedia
String.padEnd(maxLength, fillString) (WebIDL operation) §: Defined in ECMAScript
String.padStart(maxLength, fillString) (WebIDL operation) §: Defined in ECMAScript
PAExtendedHistogramContribution (WebIDL dictionary) §: Defined in Protected Audience; Related terms: PAExtendedHistogramContribution.bucket, PAExtendedHistogramContribution.filteringId, PAExtendedHistogramContribution.value; see also WebIDLPedia
PAG Proposal (concept) §: Defined in W3C Patent Policy
@page (CSS @rule) §: Defined in CSS Paged Media 3 , CSS 2.2; Referenced in Proposals for the future of CSS Paged Media, CSS Sizing 3, CSS Syntax 3; Related terms: CSS descriptor bleed, CSS descriptor marks, CSS descriptor page-orientation, CSS descriptor size, CSS value :blank, CSS value :first, CSS value :left, CSS value :right
@page (concept) §: Defined in CSS 2.1
page (CSS value for break-after, break-before property ) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5
"page" (value for BlockFragmentationType WebIDL enumeration) §: Defined in CSS Layout API 1
"page" (value for BreakType WebIDL enumeration) §: Defined in CSS Layout API 1
page (CSS property) §: Defined in CSS Paged Media 3; Referenced in CSS Fragmentation 3, CSS Fragmentation 4, CSS Typed OM 1
page (CSS value for float-reference ) §: Defined in CSS Page Floats
page (CSS value for hyphenate-limit-lines ) §: Defined in CSS Text 4
Page (WebIDL interface) §: Defined in MiniApp Lifecycle; Related terms: Page.onpagehidden, Page.onpageloaded, Page.onpageready, Page.onpageshown, Page.onpageunloaded, Page.pageInputObject, Page.pageState; see also WebIDLPedia
page area (concept) §: Defined in CSS Paged Media 3; Referenced in CSS Positioned Layout 3, CSS Values 3, CSS Values 4
page area (concept) §: Defined in CSS 2.1
page box (concept) §: Defined in CSS Paged Media 3
page box (concept) §: Defined in CSS 2.1
page break (concept) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
page context (concept) §: Defined in CSS Paged Media 3
page credentialless nonce (concept) §: Defined in Iframe credentialless
page first render ready (concept for Document ) §: Defined in MiniApp Lifecycle
Page float (concept) §: Defined in CSS Page Floats
page hidden (concept for Document ) §: Defined in MiniApp Lifecycle
page lifecycle events (concept for Document ) §: Defined in MiniApp Lifecycle
page lifecycle states (concept for Document ) §: Defined in MiniApp Lifecycle
page loaded (concept for Document ) §: Defined in MiniApp Lifecycle
page loading (concept for Document ) §: Defined in MiniApp Lifecycle
Page Orientation (concept) §: Defined in CSS Paged Media 3
page progression (concept) §: Defined in CSS Paged Media 3; Referenced in CSS Fragmentation 3, CSS Fragmentation 4, CSS Writing Modes 3, CSS Writing Modes 4
page property (concept) §: Defined in CSS Paged Media 3
page pseudo-class (concept) §: Defined in CSS Paged Media 3
page ready (concept for Document ) §: Defined in MiniApp Lifecycle
page running in background (concept for Document ) §: Defined in MiniApp Lifecycle
page running in foreground (concept for Document ) §: Defined in MiniApp Lifecycle
page selector (concept) §: Defined in CSS Paged Media 3
page selector (concept) §: Defined in CSS 2.1
Page sheet (concept) §: Defined in CSS Paged Media 3
page shown (concept for Document ) §: Defined in MiniApp Lifecycle
page type selector (concept) §: Defined in CSS Paged Media 3
page unloaded (concept for Document ) §: Defined in MiniApp Lifecycle
page unloading (concept for Document ) §: Defined in MiniApp Lifecycle
page visibility change steps (concept) §: Defined in HTML; Referenced in Web NFC API, Device Posture API, Device Posture API, Geolocation, Screen Wake Lock API
CSSRule.PAGE_RULE (WebIDL constant) §: Defined in CSSOM
page-break-after (CSS property) §: Defined in CSS 2.1 , CSS 2.2; Referenced in CSS Fragmentation 3, CSS Fragmentation 4, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Logical Properties 1, CSS Paged Media 3, CSS Typed OM 1; Related terms: CSS value always, CSS value auto, CSS value avoid, CSS value left, CSS value right
page-break-before (CSS property) §: Defined in CSS 2.1 , CSS 2.2; Referenced in CSS Fragmentation 3, CSS Fragmentation 4, CSS Cascading 4, CSS Cascading 5, CSS Logical Properties 1, CSS Paged Media 3, CSS Typed OM 1; Related terms: CSS value always, CSS value auto, CSS value avoid, CSS value left, CSS value right
page-break-inside (CSS property) §: Defined in CSS 2.1 , CSS 2.2; Referenced in CSS Fragmentation 3, CSS Fragmentation 4, CSS Typed OM 1; Related terms: CSS value always, CSS value auto, CSS value auto, CSS value avoid, CSS value avoid, CSS value avoid-column, CSS value avoid-page, CSS value avoid-region, CSS value left, CSS value right
page-context (concept) §: Defined in CSS 2.1
page-margin boxes (concept) §: Defined in CSS Paged Media 3; Referenced in CSS User Interface 4
page-margin property (concept) §: Defined in CSS Paged Media 3
page-orientation (CSS descriptor for @page ) §: Defined in CSS Paged Media 3
CSSPageDescriptors.page-orientation (WebIDL attribute) §: Defined in CSSOM
<page-selector> (CSS type) §: Defined in CSS Paged Media 3
<page-selector-list> (CSS type) §: Defined in CSS Paged Media 3
<page-size> (CSS type for size descriptor of @page @rule ) §: Defined in CSS Paged Media 3; Related terms: CSS value A3, CSS value A4, CSS value A5, CSS value B4, CSS value B5, CSS value JIS-B4, CSS value JIS-B5, CSS value ledger, CSS value legal, CSS value letter
page’s supported color schemes (concept) §: Defined in CSS Color Adjustment 1
paged (CSS value for overflow-block descriptor of @media @rule ) §: Defined in Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
paged media (concept) §: Defined in Media Queries 4 , Media Queries 5; Referenced in CSS Display 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Backgrounds 3, CSS Fragmentation 3, CSS Fragmentation 4, CSS Line Grid 1, CSS Overflow 3, CSS Paged Media 3, CSS Positioned Layout 3, CSS Regions 1, CSS Table 3, CSS Values 3, CSS Values 4, CSS Writing Modes 3, CSS Writing Modes 4, Scroll-driven Animations
'paged' media group (concept) §: Defined in CSS 2.1
pagehide (event for Window ) §: Defined in HTML; Referenced in Document Picture-in-Picture, WebDriver
Page.pageInputObject (WebIDL attribute) §: Defined in MiniApp Lifecycle
PageInputObject (WebIDL interface) §: Defined in MiniApp Lifecycle; Related terms: PageInputObject.pageInputQuery; see also WebIDLPedia
PageInputObject.pageInputQuery (WebIDL attribute) §: Defined in MiniApp Lifecycle
VisualViewport.pageLeft (WebIDL attribute) §: Defined in CSSOM View
CSSPageDescriptors.pageOrientation (WebIDL attribute) §: Defined in CSSOM
InputObject.pagePath (WebIDL attribute) §: Defined in MiniApp Lifecycle
pager (value for autocomplete attribute of button element, autocomplete attribute of fieldset element, autocomplete attribute of input element, autocomplete attribute of object element, autocomplete attribute of output element, autocomplete attribute of select element, autocomplete attribute of textarea element ) §: Defined in HTML
pagereveal (event for Window ) §: Defined in HTML; Referenced in CSS View Transitions 2
PageRevealEvent (WebIDL interface) §: Defined in HTML; Related terms: PageRevealEvent.viewTransition; see also WebIDLPedia
PageRevealEventInit (WebIDL dictionary) §: Defined in HTML; Related terms: PageRevealEventInit.viewTransition; see also WebIDLPedia
pages (concept) §: Defined in MiniApp Manifest
pageshow (event for Window ) §: Defined in HTML; Referenced in WebDriver
PageState (WebIDL enumeration) §: Defined in MiniApp Lifecycle; Related terms: value hidden, value loaded, value ready, value shown, value unloaded; see also WebIDLPedia
Page.pageState (WebIDL attribute) §: Defined in MiniApp Lifecycle
pageswap (event for Window ) §: Defined in HTML; Referenced in CSS View Transitions 2
PageSwapEvent (WebIDL interface) §: Defined in HTML; Referenced in CSS View Transitions 2; Related terms: PageSwapEvent.activation, PageSwapEvent.viewTransition; see also WebIDLPedia
PageSwapEventInit (WebIDL dictionary) §: Defined in HTML; Related terms: PageSwapEventInit.activation, PageSwapEventInit.viewTransition; see also WebIDLPedia
VisualViewport.pageTop (WebIDL attribute) §: Defined in CSSOM View
PageTransitionEvent (WebIDL interface) §: Defined in HTML; Related terms: PageTransitionEvent.persisted; see also WebIDLPedia
PageTransitionEventInit (WebIDL dictionary) §: Defined in HTML; see also WebIDLPedia
MouseEvent.pageX (WebIDL attribute) §: Defined in CSSOM View
Touch.pageX (WebIDL attribute) §: Defined in Touch Events
TouchInit.pageX (WebIDL dictionary member) §: Defined in Touch Events
pageXOffset (WebIDL attribute for Window ) §: Defined in CSSOM View
MouseEvent.pageY (WebIDL attribute) §: Defined in CSSOM View
Touch.pageY (WebIDL attribute) §: Defined in Touch Events
TouchInit.pageY (WebIDL dictionary member) §: Defined in Touch Events
pageYOffset (WebIDL attribute for Window ) §: Defined in CSSOM View
paginate (CSS value for continue ) §: Defined in CSS Overflow 5
pagination (concept) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
PAHistogramContribution (WebIDL dictionary) §: Defined in Private Aggregation API; Referenced in Protected Audience; Related terms: PAHistogramContribution.bucket, PAHistogramContribution.filteringId, PAHistogramContribution.value; see also WebIDLPedia
<paint> (CSS type) §: Defined in CSS Fill and Stroke 3 , SVG 2; Related terms: CSS value none
paint (CSS value for contain ) §: Defined in CSS Containment 1 , CSS Containment 2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Transforms 2
paint (concept) §: Defined in SVG 2
Paint (concept) §: Defined in Paint Timing
paint a block’s decorations (concept) §: Defined in CSS Positioned Layout 4
paint a box in a line box (concept) §: Defined in CSS Positioned Layout 4
paint a document (concept) §: Defined in CSS Positioned Layout 4
paint a stacking container (concept) §: Defined in CSS Positioned Layout 4
paint a stacking context (concept) §: Defined in CSS Positioned Layout 4; Referenced in UI Events
paint containment (concept) §: Defined in CSS Containment 1 , CSS Containment 2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Anchor Positioning, CSS Transforms 2
paint line (concept) §: Defined in CSS Images 4
paint server element (concept) §: Defined in SVG 2; Referenced in CSS Transforms 1
paint source (concept) §: Defined in CSS Images 4; Referenced in HTML
paint timing info (concept) §: Defined in Paint Timing
<paint-box> (CSS type) §: Defined in CSS Box Model 3 , CSS Box Model 4; Related terms: CSS value border-box, CSS value content-box, CSS value fill-box, CSS value padding-box, CSS value stroke-box
paint-order (CSS property) §: Defined in SVG 2; Referenced in CSS Typed OM 1
paint() (CSS function) §: Defined in CSS Painting API 1
PaintRenderingContext2D (WebIDL interface) §: Defined in CSS Painting API 1; see also WebIDLPedia
PaintRenderingContext2DSettings (WebIDL dictionary) §: Defined in CSS Painting API 1; Related terms: PaintRenderingContext2DSettings.alpha; see also WebIDLPedia
PaintSize (WebIDL interface) §: Defined in CSS Painting API 1; Related terms: PaintSize.height, PaintSize.width; see also WebIDLPedia
PaintTimingMixin.paintTime (WebIDL attribute) §: Defined in Paint Timing
PaintTimingMixin (WebIDL interface) §: Defined in Paint Timing; Related terms: PaintTimingMixin.paintTime, PaintTimingMixin.presentationTime; see also WebIDLPedia
"paintworklet" (value for RequestDestination WebIDL enumeration) §: Defined in Fetch
paintWorklet (WebIDL attribute for CSS ) §: Defined in CSS Painting API 1
PaintWorkletGlobalScope (WebIDL interface) §: Defined in CSS Painting API 1; Referenced in WebDriver BiDi; Related terms: PaintWorkletGlobalScope.devicePixelRatio, PaintWorkletGlobalScope.registerPaint(name, paintCtor); see also WebIDLPedia
pair asynchronously iterable declaration (concept) §: Defined in Web IDL
pair iterator (concept) §: Defined in Web IDL
palegoldenrod (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
palegoldenrod (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
palegreen (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
palegreen (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
<palette-identifier> (CSS type for font-palette ) §: Defined in CSS Fonts 4
<palette-mix()> (CSS type for font-palette ) §: Defined in CSS Fonts 4
palette-mix() (CSS function) §: Defined in CSS Fonts 4; Referenced in CSS Values 5
FontFace.palettes (WebIDL attribute) §: Defined in CSS Font Loading 3
paleturquoise (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
paleturquoise (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
palevioletred (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
palevioletred (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
palpable content (concept) §: Defined in HTML; Referenced in The <model> element, Fenced Frame, EPUB 3.3, ARIA in HTML, HTML Ruby Markup Extensions
MediaTrackCapabilities.pan (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackConstraintSet.pan (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackSettings.pan (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackSupportedConstraints.pan (WebIDL dictionary member) §: Defined in MediaStream Image Capture
StereoPannerNode.pan (WebIDL attribute) §
StereoPannerNode.pan (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
StereoPannerOptions.pan (WebIDL dictionary member) §
StereoPannerOptions.pan (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
PannerNode (WebIDL interface) §: Defined in Web Audio API , Web Audio API 1.1; Related terms: undefinedconeInnerAngle, undefinedconeOuterAngle, undefinedconeOuterGain, undefineddistanceModel, undefinedmaxDistance, undefinedorientationX, undefinedorientationY, undefinedorientationZ, undefinedpanningModel, undefinedpositionX, undefinedpositionY, undefinedpositionZ, undefinedrefDistance, undefinedrolloffFactor, undefinedPannerNode(context, options), undefinedsetOrientation(x, y, z), undefinedsetPosition(x, y, z); see also WebIDLPedia
new PannerNode(context, options) (WebIDL constructor) §
new PannerNode(context, options) (WebIDL constructor) §: Defined in Web Audio API , Web Audio API 1.1
PannerOptions (WebIDL dictionary) §: Defined in Web Audio API , Web Audio API 1.1; Related terms: undefinedconeInnerAngle, undefinedconeOuterAngle, undefinedconeOuterGain, undefineddistanceModel, undefinedmaxDistance, undefinedorientationX, undefinedorientationY, undefinedorientationZ, undefinedpanningModel, undefinedpositionX, undefinedpositionY, undefinedpositionZ, undefinedrefDistance, undefinedrolloffFactor; see also WebIDLPedia
PannerNode.panningModel (WebIDL attribute) §
PannerNode.panningModel (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
PannerOptions.panningModel (WebIDL dictionary member) §
PannerOptions.panningModel (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
PanningModelType (WebIDL enumeration) §: Defined in Web Audio API , Web Audio API 1.1; Related terms: value equalpower, value HRTF; see also WebIDLPedia
CameraDevicePermissionDescriptor.panTiltZoom (WebIDL dictionary member) §: Defined in Media Capture and Streams; Referenced in MediaStream Image Capture
papayawhip (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
papayawhip (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
par (markup element) §: Defined in EPUB 3.3
Paragraph direction (concept) §: Defined in Internationalization Glossary
parallel queue (concept) §: Defined in HTML; Referenced in Fetch, Background Fetch, Content Index, File and Directory Entries API, Pointer Lock 2.0, WebCodecs; Related terms: concept enqueue steps
param (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML
AudioWorkletNodeOptions.parameterData (WebIDL dictionary member) §
AudioWorkletNodeOptions.parameterData (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
parameters (concept for MIME type ) §: Defined in MIME Sniffing; Referenced in Fetch, File System Access, Protected Audience, Loading Signed Exchanges, File API, Verifiable Credential Data Integrity 1.0, XMLHttpRequest
AnyExternType.parameters (WebIDL dictionary member) §: Defined in WebAssembly JavaScript Interface: Type Reflection
AudioWorkletNode.parameters (WebIDL attribute) §
AudioWorkletNode.parameters (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
FunctionType.parameters (WebIDL dictionary member) §: Defined in WebAssembly JavaScript Interface: Type Reflection
TagType.parameters (WebIDL dictionary member) §
TagType.parameters (WebIDL dictionary member) §
TagType.parameters (WebIDL dictionary member) §: Defined in WebAssembly JavaScript Interface: Exception Handling , WebAssembly JavaScript Interface: Promise Integration , WebAssembly JavaScript Interface: JS String Builtins
IdentityProviderRequestOptions.params (WebIDL dictionary member) §: Defined in Federated Credential Management API
parent (concept for tree ) §: Defined in DOM; Referenced in HTML, execCommand, URL Fragment Text Directives, CSS View Transitions 1, CSSOM View, EditContext API, Selection API
parent (concept for file system entry ) §: Defined in File System; Referenced in File System Access
parent (concept for navigable ) §: Defined in HTML; Referenced in WebDriver BiDi, Fenced Frame, Prefetch, Prerendering Revamped, URL Fragment Text Directives, Shared Storage API, Credential Management 1, Permissions Policy, Service Workers
parent (concept) §: Defined in CSS 2.1
AnimationEffect.parent (WebIDL attribute) §: Defined in Web Animations 2
CSSPseudoElement.parent (WebIDL attribute) §: Defined in CSS Pseudo-Elements 4
Window.parent (WebIDL attribute) §: Defined in HTML
parent box (concept for CSS ) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
parent CSS rule (concept for CSSStyleDeclaration ) §: Defined in CSSOM; Referenced in CSS Anchor Positioning, CSS Nesting
parent element (concept) §: Defined in DOM; Referenced in HTML, URL Fragment Text Directives, CSS Cascading 6, CSSOM View
Node.parentElement (WebIDL attribute) §: Defined in DOM
ProfilerStack.parentId (WebIDL dictionary member) §: Defined in JS Self-Profiling API
ParentNode (WebIDL interface) §: Defined in DOM; Referenced in HTML Sanitizer API; Related terms: ParentNode.childElementCount, ParentNode.children, ParentNode.firstElementChild, ParentNode.lastElementChild, ParentNode.append(...nodes), ParentNode.prepend(...nodes), ParentNode.querySelector(selectors), ParentNode.querySelectorAll(selectors), ParentNode.replaceChildren(...nodes); see also WebIDLPedia
Node.parentNode (WebIDL attribute) §: Defined in DOM; Referenced in Selectors 4
TreeWalker.parentNode() (WebIDL operation) §: Defined in DOM
CSSRule.parentRule (WebIDL attribute) §: Defined in CSSOM
CSSStyleDeclaration.parentRule (WebIDL attribute) §: Defined in CSSOM
CSSRule.parentStyleSheet (WebIDL attribute) §: Defined in CSSOM
StyleSheet.parentStyleSheet (WebIDL attribute) §: Defined in CSSOM
SerialOptions.parity (WebIDL dictionary member) §: Defined in Web Serial API
ParityType (WebIDL enumeration) §: Defined in Web Serial API; Related terms: value even, value none, value odd; see also WebIDLPedia
parse a block’s contents (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSSOM
parse a calculation (concept) §: Defined in CSS Values 4
parse a comma-separated list according to a CSS grammar (concept for CSS ) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Fonts 4, Selectors 4
parse a comma-separated list of component values (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, Media Queries 4, Media Queries 5
parse a component value (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1
parse a CSS <color> value (concept) §: Defined in CSS Color 4
parse a CSS declaration block (concept) §: Defined in CSSOM
parse a CSS rule (concept) §: Defined in CSSOM
parse a CSS stylesheet (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
parse a CSS value (concept) §: Defined in CSSOM
parse a CSSStyleValue (concept) §: Defined in CSS Typed OM 1
parse a declaration (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
parse a group of selectors (concept) §: Defined in CSSOM
parse a JSON string to a JavaScript value (concept) §: Defined in Infra; Referenced in Protected Audience
parse a JSON string to an Infra value (concept) §: Defined in Infra; Referenced in HTML, Source Map, URL Pattern, AT Driver, WebDriver BiDi, Speculation Rules, Shared Storage API, Protected Audience, Payment Method Manifest, Publication Manifest
parse a list of component values (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSSOM, Intersection Observer
parse a list of CSS page selectors (concept) §: Defined in CSSOM
parse a media query (concept) §: Defined in CSSOM
parse a media query list (concept) §: Defined in CSSOM; Referenced in CSSOM View
parse a MIME type (concept) §: Defined in MIME Sniffing; Referenced in Fetch, HTML, Web NFC API, File System Access, Manifest Incubations, Clipboard API and events, File API, Image Resource, XMLHttpRequest
parse a MIME type from bytes (concept) §: Defined in MIME Sniffing; Referenced in XMLHttpRequest
parse a relative selector (concept) §: Defined in Selectors 4
parse a response’s Content Security Policies (algorithm) §: Defined in Content Security Policy 3
parse a rule (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSSOM
parse a sandboxing directive (concept) §: Defined in HTML; Referenced in The Storage Access API, Fenced Frame, Clear Site Data, Content Security Policy 3
parse a selector (concept) §: Defined in Selectors 4; Referenced in DOM, WebDriver BiDi, Speculation Rules
parse a serialized CSP (algorithm) §: Defined in Content Security Policy 3
parse a stylesheet (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 4, WebVTT: The Web Video Text Tracks Format
parse a stylesheet’s contents (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSSOM
parse a URL (concept) §: Defined in HTML; Referenced in URL Pattern, Attribution Reporting, Portals, Presentation API
parse a WebAssembly module (concept) §: Defined in WebAssembly JavaScript Interface: ESM Integration
parse an origin-bound one-time code message (concept) §: Defined in SMS One-Time Codes
parse as a forgiving selector list (concept) §: Defined in Selectors 4
Parse document policy (concept) §: Defined in Document Policy
parse JSON bytes to a JavaScript value (concept) §: Defined in Infra; Referenced in Fetch, Source Map, Federated Credential Management API, Verifiable Credential Data Integrity 1.0, XMLHttpRequest
parse JSON bytes to an Infra value (concept) §: Defined in Infra; Referenced in Attribution Reporting, User Agent Interaction with Related Website Sets, Protected Audience, Web Application Manifest, Verifiable Credential Data Integrity 1.0
parse orientation data reading (concept) §: Defined in Device Orientation and Motion; Referenced in Orientation Sensor
Parse policy directive (algorithm) §: Defined in Permissions Policy
parse response’s Clear-Site-Data header (algorithm) §: Defined in Clear Site Data
Parse response’s Content Security Policies (concept) §: Defined in Content Security Policy 3; Referenced in HTML
Parse single-value number reading (concept) §: Defined in Generic Sensor API; Referenced in Ambient Light Sensor, Geolocation Sensor, Magnetometer, Proximity Sensor
parse something according to a CSS grammar (concept for CSS ) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Color 4, CSS Conditional 3, CSS Counter Styles 3, CSS Nesting, CSS Paged Media 3, CSS Properties and Values API 1, CSS Pseudo-Elements 4, CSS Typed OM 1, CSSOM, Geometry Interfaces 1, Selectors 4
parse with a <syntax> (concept) §: Defined in CSS Values 5
Parse XYZ reading (concept) §: Defined in Generic Sensor API; Referenced in Accelerometer, Magnetometer, Device Orientation and Motion
CSSColorValue.parse(cssText) (WebIDL operation) §: Defined in CSS Typed OM 1
CSSNumericValue.parse(cssText) (WebIDL operation) §: Defined in CSS Typed OM 1
CSSStyleValue.parse(property, cssText) (WebIDL operation) §: Defined in CSS Typed OM 1
Date.parse(string) (WebIDL operation) §: Defined in ECMAScript; Referenced in Temporal
JSON.parse(text, reviver) (WebIDL operation) §: Defined in ECMAScript; Referenced in HTML, Payment Request API
parse(url, base) (WebIDL operation for URL ) §: Defined in URL
CSSStyleValue.parseAll(property, cssText) (WebIDL operation) §: Defined in CSS Typed OM 1
parseCommaValueList(css) (WebIDL operation for CSS ) §: Defined in CSS Parser API
PublicKeyCredential.parseCreationOptionsFromJSON(options) (WebIDL operation) §: Defined in Web Authentication
"parsed" (value for ServiceWorkerState WebIDL enumeration) §: Defined in Service Workers
parsed payment method manifest (concept) §: Defined in Payment Method Manifest; Related terms: concept default applications, concept supported origins
parseDeclaration(css, options) (WebIDL operation for CSS ) §: Defined in CSS Parser API
parseDeclarationList(css, options) (WebIDL operation for CSS ) §: Defined in CSS Parser API
globalThis.parseFloat(string) (WebIDL operation) §: Defined in ECMAScript
Number.parseFloat(string) (WebIDL operation) §: Defined in ECMAScript
globalThis.%parseFloat%() (WebIDL operation) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Source Phase Imports
DOMParser.parseFromString(string, type) (WebIDL operation) §: Defined in HTML; Referenced in HTML Sanitizer API, Trusted Types
ParseHexOctet (algorithm) §: Defined in ECMAScript
parseHTML (concept for Document ) §: Defined in HTML Sanitizer API
Document.parseHTML(html, options) (WebIDL operation) §: Defined in HTML Sanitizer API
parseHTMLUnsafe (concept for Document ) §: Defined in HTML Sanitizer API
Document.parseHTMLUnsafe(html, options) (WebIDL operation) §: Defined in HTML Sanitizer API
Document.parseHTMLUnsafe(html) (WebIDL operation) §: Defined in HTML
globalThis.parseInt(string, radix) (WebIDL operation) §: Defined in ECMAScript
Number.parseInt(string, radix) (WebIDL operation) §: Defined in ECMAScript
globalThis.%parseInt%() (WebIDL operation) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Source Phase Imports
ParseModule (algorithm) §: Defined in ECMAScript; Referenced in HTML
parser metadata (concept for request ) §: Defined in Fetch; Referenced in HTML, Content Security Policy 3, Service Workers
parser-inserted (concept for script ) §: Defined in HTML; Referenced in Content Security Policy 3
PublicKeyCredential.parseRequestOptionsFromJSON(options) (WebIDL operation) §: Defined in Web Authentication
parseRule(css, options) (WebIDL operation for CSS ) §: Defined in CSS Parser API
parseRuleList(css, options) (WebIDL operation for CSS ) §: Defined in CSS Parser API
ParseScript (algorithm) §: Defined in ECMAScript; Referenced in HTML, Protected Audience
parseStylesheet(css, options) (WebIDL operation for CSS ) §: Defined in CSS Parser API
ParseTimeZoneOffsetString (algorithm) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API
parseValue(css) (WebIDL operation for CSS ) §: Defined in CSS Parser API
parseValueList(css) (WebIDL operation for CSS ) §: Defined in CSS Parser API
part (markup attribute for html-global ) §: Defined in CSS Shadow Parts
Element.part (WebIDL attribute) §: Defined in CSS Shadow Parts
part element map (concept for shadow root ) §: Defined in CSS Shadow Parts
part name list (concept for element ) §: Defined in CSS Shadow Parts
::part() (CSS selector) §: Defined in CSS Shadow Parts; Referenced in CSS Anchor Positioning, CSS Conditional 5, CSS Properties and Values API 1, CSS Pseudo-Elements 4, CSS View Transitions 2, CSSOM, Web Animations
partial canonicalization function (concept) §: Defined in RDF Dataset Canonicalization
partial dictionary (concept) §: Defined in Web IDL
partial interface (concept) §: Defined in Web IDL; Referenced in Isolated Contexts, Service Workers
partial interface mixin (concept) §: Defined in Web IDL; Referenced in Isolated Contexts
partial namespace (concept) §: Defined in Web IDL; Referenced in Isolated Contexts
partially contained (concept for live range ) §: Defined in DOM; Referenced in CSS Custom Highlight API 1
participate (concept for tree ) §: Defined in DOM; Referenced in Web Bluetooth, CSS View Transitions 1
partition nonce (concept for environment ) §: Defined in Iframe credentialless
partition nonce (concept) §: Defined in Fenced Frame
partition nonce (concept for fenced frame config instance ) §: Defined in Fenced Frame
CookieInit.partitioned (WebIDL dictionary member) §: Defined in Cookie Store API
CookieListItem.partitioned (WebIDL dictionary member) §: Defined in Cookie Store API
CookieStoreDeleteOptions.partitioned (WebIDL dictionary member) §: Defined in Cookie Store API
PASignalValue (WebIDL dictionary) §: Defined in Protected Audience; Related terms: PASignalValue.baseValue, PASignalValue.offset, PASignalValue.scale; see also WebIDLPedia
"passedAndEnforced" (value for KAnonStatus WebIDL enumeration) §: Defined in Protected Audience
"passedNotEnforced" (value for KAnonStatus WebIDL enumeration) §: Defined in Protected Audience
"passive" (value for IdentityCredentialRequestOptionsMode WebIDL enumeration) §: Defined in Federated Credential Management API
"passive" (value for RTCIceTcpCandidateType WebIDL enumeration) §: Defined in WebRTC 1.0
AddEventListenerOptions.passive (WebIDL dictionary member) §: Defined in DOM; Referenced in Pointer Events
ObservableEventListenerOptions.passive (WebIDL dictionary member) §: Defined in Observable
Passkey (concept) §: Defined in Web Authentication
"passkeyPlatformAuthenticator" (value for ClientCapability WebIDL enumeration) §: Defined in Web Authentication
GPUStencilFaceState.passOp (WebIDL dictionary member) §: Defined in WebGPU
password (value for type attribute of input element ) §: Defined in HTML; Referenced in CSS User Interface 4
password (concept for url ) §: Defined in URL; Referenced in Fetch, HTML, URL Pattern, Content Security Policy 3, Payment Method Identifiers, Payment Method Manifest, Referrer Policy, Reporting API, WebRTC 1.0
password (concept for state of constructor string parser ) §: Defined in URL Pattern
Password (state of markup element for input ) §: Defined in HTML
password (WebIDL constant for Credential of [[type]] ) §: Defined in Credential Management 1
CredentialCreationOptions.password (WebIDL dictionary member) §: Defined in Credential Management 1
CredentialRequestOptions.password (WebIDL dictionary member) §: Defined in Credential Management 1
HTMLHyperlinkElementUtils.password (WebIDL attribute) §: Defined in HTML
PasswordCredential.password (WebIDL attribute) §: Defined in Credential Management 1
PasswordCredentialData.password (WebIDL dictionary member) §: Defined in Credential Management 1
RTCIceParameters.password (WebIDL dictionary member) §: Defined in WebRTC 1.0
password (WebIDL attribute for URL ) §: Defined in URL
URLPattern.password (WebIDL attribute) §: Defined in URL Pattern
URLPatternInit.password (WebIDL dictionary member) §: Defined in URL Pattern
URLPatternResult.password (WebIDL dictionary member) §: Defined in URL Pattern
PasswordCredential (WebIDL interface) §: Defined in Credential Management 1; Related terms: PasswordCredential.password, new PasswordCredential(data), new PasswordCredential(form), PasswordCredential.[[CollectFromCredentialStore]](origin, options, sameOriginWithAncestors), PasswordCredential.[[Create]](origin, options, sameOriginWithAncestors), PasswordCredential.[[Store]](credential, sameOriginWithAncestors); see also WebIDLPedia
new PasswordCredential(data) (WebIDL constructor) §: Defined in Credential Management 1
new PasswordCredential(form) (WebIDL constructor) §: Defined in Credential Management 1
PasswordCredentialData (WebIDL dictionary) §: Defined in Credential Management 1; Related terms: PasswordCredentialData.iconURL, PasswordCredentialData.name, PasswordCredentialData.origin, PasswordCredentialData.password; see also WebIDLPedia
PasswordCredentialInit (WebIDL type alias) §: Defined in Credential Management 1; see also WebIDLPedia
:past (CSS selector) §: Defined in Selectors 4
paste (event for GlobalEventHandlers ) §: Defined in Clipboard API and events
Patent Advisory Group (concept) §: Defined in W3C Patent Policy
path (concept for Event ) §: Defined in DOM
path (concept for file system locator ) §: Defined in File System
path (markup attribute for animateMotion ) §: Defined in SVG Animations 2; Referenced in SVG 2
path (concept for url ) §: Defined in URL; Referenced in Fetch, HTML, Private Aggregation API, URL Pattern, A Well-Known URL for Passkey Endpoints, WebDriver BiDi, WebSockets, Attribution Reporting, Manifest Incubations, Shared Storage API, Protected Audience, Web Application Manifest, A Well-Known URL for Changing Passwords, Content Security Policy 3, Federated Credential Management API, File API, Network Error Logging, Payment Method Manifest, Referrer Policy, Service Workers, Upgrade Insecure Requests, WebDriver, WebRTC 1.0
path (markup element) §: Defined in SVG 2; Referenced in CSS Shapes 2; Related terms: markup attribute requiredExtensions, markup attribute systemLanguage
path (markup attribute for textPath ) §: Defined in SVG 2
CookieInit.path (WebIDL dictionary member) §: Defined in Cookie Store API
CookieListItem.path (WebIDL dictionary member) §: Defined in Cookie Store API
CookieStoreDeleteOptions.path (WebIDL dictionary member) §: Defined in Cookie Store API
path or authority state (concept for basic URL parser ) §: Defined in URL
path start state (concept for basic URL parser ) §: Defined in URL; Referenced in HTML, URL Pattern
path state (concept for basic URL parser ) §: Defined in URL
path-absolute-non-Windows-file-URL string (concept) §: Defined in URL
path-absolute-URL string (concept) §: Defined in URL; Referenced in Network Reporting API
path-part (grammar) §: Defined in Content Security Policy 3; Referenced in Content Security Policy: Embedded Enforcement
path-part match (concept) §: Defined in Content Security Policy 3; Referenced in Content Security Policy: Embedded Enforcement
path-relative-scheme-less-URL string (concept) §: Defined in URL; Referenced in EPUB 3.3, EPUB Reading Systems 3.3
path-relative-URL string (concept) §: Defined in URL
path() (CSS function for <basic-shape> ) §: Defined in CSS Shapes 1; Referenced in CSS Shapes 2
Path2D (WebIDL interface) §: Defined in HTML; Referenced in Web IDL; Related terms: new Path2D(path), Path2D.addPath(path, transform); see also WebIDLPedia
new Path2D(path) (WebIDL constructor) §: Defined in HTML
SVGGeometryElement.pathLength (WebIDL attribute) §: Defined in SVG 2
pathname (concept for state of constructor string parser ) §: Defined in URL Pattern
HTMLHyperlinkElementUtils.pathname (WebIDL attribute) §: Defined in HTML
Location.pathname (WebIDL attribute) §: Defined in HTML
pathname (WebIDL attribute for URL ) §: Defined in URL
URLPattern.pathname (WebIDL attribute) §: Defined in URL Pattern
URLPatternInit.pathname (WebIDL dictionary member) §: Defined in URL Pattern
URLPatternResult.pathname (WebIDL dictionary member) §: Defined in URL Pattern
WorkerLocation.pathname (WebIDL attribute) §: Defined in HTML
pattern (markup attribute for input ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
pattern (markup element) §: Defined in SVG 2; Referenced in CSS Display 4, CSS Transforms 1, CSS Transforms 2; Related terms: markup attribute height, markup attribute href, markup attribute patternContentUnits, markup attribute patternTransform, markup attribute patternUnits, markup attribute width, markup attribute x, markup attribute xlink:href, markup attribute xlink:title, markup attribute y
HTMLInputElement.pattern (WebIDL attribute) §: Defined in HTML
patternContentUnits (markup attribute for pattern ) §: Defined in SVG 2
SVGPatternElement.patternContentUnits (WebIDL attribute) §: Defined in SVG 2
ValidityState.patternMismatch (WebIDL attribute) §: Defined in HTML
patternTransform (markup attribute for pattern ) §: Defined in SVG 2; Referenced in SVG Animations 2
SVGPatternElement.patternTransform (WebIDL attribute) §: Defined in SVG 2
patternUnits (markup attribute for pattern ) §: Defined in SVG 2
SVGPatternElement.patternUnits (WebIDL attribute) §: Defined in SVG 2
pause (event for HTMLMediaElement ) §: Defined in HTML
pause (concept) §: Defined in HTML; Referenced in File System, WebDriver, WebDriver, XMLHttpRequest
pause (event for SpeechSynthesisUtterance ) §: Defined in Web Speech API
pause (CSS property) §: Defined in CSS Speech 1 , CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1
"pause" (value for MediaSessionAction WebIDL enumeration) §: Defined in Media Session
pause (event for MediaRecorder ) §: Defined in MediaStream Recording
pause-after (CSS property) §: Defined in CSS Speech 1 , CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1; Related terms: CSS value medium, CSS value none, CSS value strong, CSS value weak, CSS value x-strong, CSS value x-weak
pause-before (CSS property) §: Defined in CSS Speech 1 , CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1; Related terms: CSS value medium, CSS value none, CSS value strong, CSS value weak, CSS value x-strong, CSS value x-weak
Animation.pause() (WebIDL operation) §: Defined in Web Animations; Referenced in CSS Animations 2
HTMLMediaElement.pause() (WebIDL operation) §: Defined in HTML; Referenced in Open Screen Protocol
MediaRecorder.pause() (WebIDL operation) §: Defined in MediaStream Recording
SpeechSynthesis.pause() (WebIDL operation) §: Defined in Web Speech API; Referenced in Prerendering Revamped
RTCInboundRtpStreamStats.pauseCount (WebIDL dictionary member) §: Defined in WebRTC Statistics
:paused (CSS selector) §: Defined in Selectors 4
paused (CSS value for animation-play-state ) §: Defined in CSS Animations 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Animations 2
"paused" (value for MediaSessionPlaybackState WebIDL enumeration) §: Defined in Media Session
"paused" (value for RecordingState WebIDL enumeration) §: Defined in MediaStream Recording
paused (concept for play state ) §: Defined in Web Animations; Referenced in CSS View Transitions 1
"paused" (value for AnimationPlayState WebIDL enumeration) §: Defined in Web Animations
HTMLMediaElement.paused (WebIDL attribute) §: Defined in HTML; Referenced in Page Lifecycle, Audio Output Devices API, Open Screen Protocol
SpeechSynthesis.paused (WebIDL attribute) §: Defined in Web Speech API
PerformanceScriptTiming.pauseDuration (WebIDL attribute) §: Defined in Long Animation Frames API
TextTrackCue.pauseOnExit (WebIDL attribute) §: Defined in HTML
AuthenticationExtensionsPaymentInputs.payeeName (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
CollectedClientAdditionalPaymentData.payeeName (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
SecurePaymentConfirmationRequest.payeeName (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
AuthenticationExtensionsPaymentInputs.payeeOrigin (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
CollectedClientAdditionalPaymentData.payeeOrigin (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
SecurePaymentConfirmationRequest.payeeOrigin (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
PaymentValidationErrors.payer (WebIDL dictionary member) §: Defined in Payment Request API
"payerEmail" (value for PaymentDelegation WebIDL enumeration) §: Defined in Payment Handler API
PaymentHandlerResponse.payerEmail (WebIDL dictionary member) §: Defined in Payment Handler API
PaymentResponse.payerEmail (WebIDL attribute) §: Defined in Payment Request API
PaymentDetailsUpdate.payerErrors (WebIDL dictionary member) §: Defined in Payment Request API
PayerErrors (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PayerErrors.email, PayerErrors.name, PayerErrors.phone; see also WebIDLPedia
"payerName" (value for PaymentDelegation WebIDL enumeration) §: Defined in Payment Handler API
PaymentHandlerResponse.payerName (WebIDL dictionary member) §: Defined in Payment Handler API
PaymentResponse.payerName (WebIDL attribute) §: Defined in Payment Request API
"payerPhone" (value for PaymentDelegation WebIDL enumeration) §: Defined in Payment Handler API
PaymentHandlerResponse.payerPhone (WebIDL dictionary member) §: Defined in Payment Handler API
PaymentResponse.payerPhone (WebIDL attribute) §: Defined in Payment Request API
RTCCodecStats.payloadType (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCEncodedAudioFrameMetadata.payloadType (WebIDL dictionary member) §: Defined in WebRTC Encoded Transform
RTCEncodedVideoFrameMetadata.payloadType (WebIDL dictionary member) §: Defined in WebRTC Encoded Transform
RTCRtpCodecParameters.payloadType (WebIDL dictionary member) §: Defined in WebRTC 1.0
"payment" (permission name) §: Defined in Payment Request API; Referenced in Secure Payment Confirmation
AuthenticationExtensionsClientInputs.payment (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
CollectedClientPaymentData.payment (WebIDL dictionary member) §: Defined in Secure Payment Confirmation
payment handler (concept) §: Defined in Payment Request API; Referenced in Secure Payment Confirmation; Related terms: concept payment method changed algorithm
payment method changed algorithm (concept for payment handler ) §: Defined in Payment Request API
payment method manifest (concept) §: Defined in Payment Method Manifest
PaymentComplete (WebIDL enumeration) §: Defined in Payment Request API; Related terms: value fail, value success, value unknown; see also WebIDLPedia
PaymentCompleteDetails (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentCompleteDetails.data; see also WebIDLPedia
PaymentCredentialInstrument (WebIDL dictionary) §: Defined in Secure Payment Confirmation; Related terms: PaymentCredentialInstrument.displayName, PaymentCredentialInstrument.icon, PaymentCredentialInstrument.iconMustBeShown; see also WebIDLPedia
PaymentCurrencyAmount (WebIDL dictionary) §: Defined in Payment Request API; Referenced in Secure Payment Confirmation; Related terms: PaymentCurrencyAmount.currency, PaymentCurrencyAmount.value; see also WebIDLPedia
PaymentDelegation (WebIDL enumeration) §: Defined in Payment Handler API; Related terms: value payerEmail, value payerName, value payerPhone, value shippingAddress; see also WebIDLPedia
PaymentDetailsBase (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentDetailsBase.displayItems, PaymentDetailsBase.modifiers, PaymentDetailsBase.shippingOptions; see also WebIDLPedia
PaymentDetailsInit (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentDetailsInit.id, PaymentDetailsInit.total; see also WebIDLPedia
PaymentDetailsModifier (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentDetailsModifier.additionalDisplayItems, PaymentDetailsModifier.data, PaymentDetailsModifier.supportedMethods, PaymentDetailsModifier.total; see also WebIDLPedia
PaymentDetailsUpdate (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentDetailsUpdate.error, PaymentDetailsUpdate.payerErrors, PaymentDetailsUpdate.paymentMethodErrors, PaymentDetailsUpdate.shippingAddressErrors, PaymentDetailsUpdate.total; see also WebIDLPedia
PaymentHandlerResponse (WebIDL dictionary) §: Defined in Payment Handler API; Related terms: PaymentHandlerResponse.details, PaymentHandlerResponse.methodName, PaymentHandlerResponse.payerEmail, PaymentHandlerResponse.payerName, PaymentHandlerResponse.payerPhone, PaymentHandlerResponse.shippingAddress, PaymentHandlerResponse.shippingOption; see also WebIDLPedia
PaymentItem (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentItem.amount, PaymentItem.label, PaymentItem.pending; see also WebIDLPedia
ServiceWorkerRegistration.paymentManager (WebIDL attribute) §: Defined in Payment Handler API
PaymentManager (WebIDL interface) §: Defined in Payment Handler API; Related terms: PaymentManager.userHint, PaymentManager.enableDelegations(); see also WebIDLPedia
PaymentValidationErrors.paymentMethod (WebIDL dictionary member) §: Defined in Payment Request API
PaymentMethodChangeEvent (WebIDL interface) §: Defined in Payment Request API; Related terms: PaymentMethodChangeEvent.methodDetails, PaymentMethodChangeEvent.methodName, WebIDL constructor constructor(); see also WebIDLPedia
PaymentMethodChangeEventInit (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentMethodChangeEventInit.methodDetails, PaymentMethodChangeEventInit.methodName; see also WebIDLPedia
PaymentMethodData (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentMethodData.data, PaymentMethodData.supportedMethods; see also WebIDLPedia
PaymentDetailsUpdate.paymentMethodErrors (WebIDL dictionary member) §: Defined in Payment Request API
PaymentRequestDetailsUpdate.paymentMethodErrors (WebIDL dictionary member) §: Defined in Payment Handler API
PaymentRequestEvent.paymentOptions (WebIDL attribute) §: Defined in Payment Handler API
PaymentRequestEventInit.paymentOptions (WebIDL dictionary member) §: Defined in Payment Handler API
PaymentOptions (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentOptions.requestBillingAddress, PaymentOptions.requestPayerEmail, PaymentOptions.requestPayerName, PaymentOptions.requestPayerPhone, PaymentOptions.requestShipping, PaymentOptions.shippingType; see also WebIDLPedia
paymentrequest (concept) §: Defined in HTML
PaymentRequest (WebIDL interface) §: Defined in Payment Request API; Referenced in HTML, Payment Method Manifest, Secure Payment Confirmation; Related terms: concept state, PaymentRequest.[[details]], PaymentRequest.id, PaymentRequest.onpaymentmethodchange, PaymentRequest.onshippingaddresschange, PaymentRequest.onshippingoptionchange, PaymentRequest.[[options]], PaymentRequest.[[serializedMethodData]], PaymentRequest.[[serializedModifierData]], PaymentRequest.shippingAddress, PaymentRequest.shippingOption, PaymentRequest.shippingType, WebIDL constructor constructor(), PaymentRequest.abort(), PaymentRequest.canMakePayment(), PaymentRequest.isSecurePaymentConfirmationAvailable(), PaymentRequest.show(); see also WebIDLPedia
PaymentRequestDetailsUpdate (WebIDL dictionary) §: Defined in Payment Handler API; Related terms: PaymentRequestDetailsUpdate.error, PaymentRequestDetailsUpdate.modifiers, PaymentRequestDetailsUpdate.paymentMethodErrors, PaymentRequestDetailsUpdate.shippingAddressErrors, PaymentRequestDetailsUpdate.shippingOptions, PaymentRequestDetailsUpdate.total; see also WebIDLPedia
PaymentRequestEvent (WebIDL interface) §: Defined in Payment Handler API; Referenced in Service Workers; Related terms: PaymentRequestEvent.methodData, PaymentRequestEvent.modifiers, PaymentRequestEvent.paymentOptions, PaymentRequestEvent.paymentRequestId, PaymentRequestEvent.paymentRequestOrigin, PaymentRequestEvent.shippingOptions, PaymentRequestEvent.topOrigin, PaymentRequestEvent.total, WebIDL constructor constructor(), PaymentRequestEvent.changePaymentMethod(methodName, methodDetails), PaymentRequestEvent.changeShippingAddress(shippingAddress), PaymentRequestEvent.changeShippingOption(shippingOption), PaymentRequestEvent.openWindow(), PaymentRequestEvent.respondWith(handlerResponsePromise); see also WebIDLPedia
PaymentRequestEventInit (WebIDL dictionary) §: Defined in Payment Handler API; Related terms: PaymentRequestEventInit.methodData, PaymentRequestEventInit.modifiers, PaymentRequestEventInit.paymentOptions, PaymentRequestEventInit.paymentRequestId, PaymentRequestEventInit.paymentRequestOrigin, PaymentRequestEventInit.shippingOptions, PaymentRequestEventInit.topOrigin, PaymentRequestEventInit.total; see also WebIDLPedia
PaymentRequestEvent.paymentRequestId (WebIDL attribute) §: Defined in Payment Handler API
PaymentRequestEventInit.paymentRequestId (WebIDL dictionary member) §: Defined in Payment Handler API
PaymentRequestEvent.paymentRequestOrigin (WebIDL attribute) §: Defined in Payment Handler API
PaymentRequestEventInit.paymentRequestOrigin (WebIDL dictionary member) §: Defined in Payment Handler API
PaymentRequestUpdateEvent (WebIDL interface) §: Defined in Payment Request API; Related terms: new PaymentRequestUpdateEvent.PaymentRequestUpdateEvent(), PaymentRequestUpdateEvent.updateWith(); see also WebIDLPedia
new PaymentRequestUpdateEvent.PaymentRequestUpdateEvent() (WebIDL constructor) §: Defined in Payment Request API
PaymentRequestUpdateEventInit (WebIDL dictionary) §: Defined in Payment Request API; see also WebIDLPedia
PaymentResponse (WebIDL interface) §: Defined in Payment Request API; Related terms: PaymentResponse.details, PaymentResponse.methodName, PaymentResponse.onpayerdetailchange, PaymentResponse.payerEmail, PaymentResponse.payerName, PaymentResponse.payerPhone, PaymentResponse.requestId, PaymentResponse.shippingAddress, PaymentResponse.shippingOption, PaymentResponse.complete(), PaymentResponse.retry(); see also WebIDLPedia
PaymentShippingOption (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentShippingOption.amount, PaymentShippingOption.id, PaymentShippingOption.label, PaymentShippingOption.selected; see also WebIDLPedia
PaymentShippingType (WebIDL enumeration) §: Defined in Payment Request API; Related terms: value delivery, value pickup, value shipping; see also WebIDLPedia
PaymentValidationErrors (WebIDL dictionary) §: Defined in Payment Request API; Related terms: PaymentValidationErrors.error, PaymentValidationErrors.payer, PaymentValidationErrors.paymentMethod, PaymentValidationErrors.shippingAddress; see also WebIDLPedia
Pbkdf2Params (WebIDL dictionary) §: Defined in Web Cryptography API; Related terms: Pbkdf2Params.hash, Pbkdf2Params.iterations, Pbkdf2Params.salt; see also WebIDLPedia
pc (CSS value for <length> ) §: Defined in CSS Values 3 , CSS Values 4 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
pc(value) (WebIDL operation for CSS ) §: Defined in CSS Typed OM 1
"pdf417" (value for BarcodeFormat WebIDL enumeration) §: Defined in Accelerated Shape Detection in Images
NavigatorPlugins.pdfViewerEnabled (WebIDL attribute) §: Defined in HTML
peachpuff (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
peachpuff (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
Peak brightness (concept) §: Defined in Media Queries 5
"peaking" (value for BiquadFilterType WebIDL enumeration) §: Defined in Web Audio API , Web Audio API 1.1
AudioRenderCapacityEvent.peakLoad (WebIDL attribute) §
AudioRenderCapacityEvent.peakLoad (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
AudioRenderCapacityEventInit.peakLoad (WebIDL dictionary member) §
AudioRenderCapacityEventInit.peakLoad (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
peek (concept for I of O queue ) §: Defined in Encoding
peek (concept for stack ) §: Defined in Infra; Referenced in Soft Navigations
PeekQueueValue (algorithm) §: Defined in Streams
MLLstmCellOptions.peepholeWeight (WebIDL dictionary member) §: Defined in Web Neural Network API
MLLstmCellSupportLimits.peepholeWeight (WebIDL dictionary member) §: Defined in Web Neural Network API
MLLstmOptions.peepholeWeight (WebIDL dictionary member) §: Defined in Web Neural Network API
MLLstmSupportLimits.peepholeWeight (WebIDL dictionary member) §: Defined in Web Neural Network API
"peer-connection" (value for RTCStatsType WebIDL enumeration) §: Defined in WebRTC Statistics
MediaStreamConstraints.peerIdentity (WebIDL dictionary member) §: Defined in Identity for WebRTC 1.0
RTCConfiguration.peerIdentity (WebIDL dictionary member) §: Defined in Identity for WebRTC 1.0
RTCIdentityProviderOptions.peerIdentity (WebIDL dictionary member) §: Defined in Identity for WebRTC 1.0
RTCPeerConnection.peerIdentity (WebIDL attribute) §: Defined in Identity for WebRTC 1.0
pending (concept) §: Defined in WebDriver BiDi; Referenced in HTML
"pending" (value for IDBRequestReadyState WebIDL enumeration) §: Defined in Indexed DB 3.0
"pending" (value for GPUBufferMapState WebIDL enumeration) §: Defined in WebGPU
"pending" (value for MIDIPortConnectionState WebIDL enumeration) §: Defined in Web MIDI API
"pending" (value for WebTransportReliabilityMode WebIDL enumeration) §: Defined in WebTransport
Animation.pending (WebIDL attribute) §: Defined in Web Animations
LockManagerSnapshot.pending (WebIDL dictionary member) §: Defined in Web Locks API
PaymentItem.pending (WebIDL dictionary member) §: Defined in Payment Request API
SpeechSynthesis.pending (WebIDL attribute) §: Defined in Web Speech API
pending animation event queue (concept) §: Defined in Web Animations; Referenced in CSS View Transitions 1
ImageDecoder.[[pending decode promises]] (internal slot) §: Defined in WebCodecs
pending event (concept for fencedframetype ) §: Defined in Fenced Frame; Related terms: concept destination, concept event, concept initiator referrer policy, concept request initiator
AudioDecoder.[[pending flush promises]] (internal slot) §: Defined in WebCodecs
AudioEncoder.[[pending flush promises]] (internal slot) §: Defined in WebCodecs
VideoDecoder.[[pending flush promises]] (internal slot) §: Defined in WebCodecs
VideoEncoder.[[pending flush promises]] (internal slot) §: Defined in WebCodecs
pending on the environment (concept for FontFaceSet ) §: Defined in CSS Font Loading 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
BaseAudioContext.[[pending promises]] (internal slot) §
BaseAudioContext.[[pending promises]] (internal slot) §: Defined in Web Audio API , Web Audio API 1.1
AudioContext.[[pending resume promises]] (internal slot) §
AudioContext.[[pending resume promises]] (internal slot) §: Defined in Web Audio API , Web Audio API 1.1; Referenced in Prerendering Revamped
pending scrollsnapchange event targets (concept for Document ) §: Defined in CSS Scroll Snap 2
pending scrollsnapchanging event targets (concept for Document ) §: Defined in CSS Scroll Snap 2
pending top layer removals (concept) §: Defined in CSS Positioned Layout 4
GPUBuffer.[[pending_map]] (internal slot) §: Defined in WebGPU
pending-substitution value (concept) §: Defined in CSS Variables 2
pending-substitution value (concept) §: Defined in CSS Values 5
RTCPeerConnection.pendingLocalDescription (WebIDL attribute) §: Defined in WebRTC 1.0
WebTransportSendStream.[[PendingOperation]] (internal slot) §: Defined in WebTransport
Sensor.[[pendingReadingNotification]] (internal slot) §: Defined in Generic Sensor API
RTCPeerConnection.pendingRemoteDescription (WebIDL attribute) §: Defined in WebRTC 1.0
"per-character" (value for HandwritingRecognitionType WebIDL enumeration) §: Defined in Handwriting Recognition API
per-type virtual sensor metadata (concept) §: Defined in Generic Sensor API; Referenced in Accelerometer, Ambient Light Sensor, Geolocation Sensor, Gyroscope, Magnetometer, Device Orientation and Motion, Orientation Sensor, Proximity Sensor
AdAuctionDataConfig.perBuyerConfig (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerCumulativeTimeouts (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerCurrencies (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerExperimentGroupIds (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerGroupLimits (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerMultiBidLimits (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerPrioritySignals (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerRealTimeReportingConfig (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerSignals (WebIDL dictionary member) §: Defined in Protected Audience
DirectFromSellerSignalsForBuyer.perBuyerSignals (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdConfig.perBuyerTimeouts (WebIDL dictionary member) §: Defined in Protected Audience
Perceivable (concept) §: Defined in WAI-ARIA , WAI-ARIA
"percent" (value for CSSNumericBaseType WebIDL enumeration) §: Defined in CSS Typed OM 1
CSSNumericType.percent (WebIDL dictionary member) §: Defined in CSS Typed OM 1
percent encoding (concept) §: Defined in Internationalization Glossary
percent hint (concept for CSSNumericValue ) §: Defined in CSS Typed OM 1; Referenced in CSS Values 4
percent-decode (concept for byte sequence ) §: Defined in URL; Referenced in No-Vary-Search
percent-decode (concept for string ) §: Defined in URL; Referenced in Fetch, HTML, Attribution Reporting, URL Fragment Text Directives, Content Security Policy 3
percent(value) (WebIDL operation for CSS ) §: Defined in CSS Typed OM 1
<percentage> (CSS value for bottom, inset property, inset-block property, inset-block-end property, inset-block-start property, inset-inline property, inset-inline-end property, inset-inline-start property, left property, right property, top property ) §: Defined in CSS Positioned Layout 3 , CSS 2.2
<percentage> (CSS value for text-indent ) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
<percentage> (CSS type) §: Defined in CSS Values 3 , CSS Values 4 , CSS 2.1 , CSS 2.2; Referenced in CSS Typed OM 2, CSS Color HDR 1, CSS Conditional Values 1, CSS Shapes 2, CSS Size Adjustment 1, Quirks Mode, CSS Anchor Positioning, CSS Animations 2, CSS Backgrounds 3, CSS Color 4, CSS Color 5, CSS Easing Functions 2, CSS Fonts 4, CSS Fonts 5, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Overflow 4, CSS Page Floats, CSS Properties and Values API 1, CSS Scroll Snap 1, CSS Sizing 3, CSS Speech 1, CSS Text Decoration 4, CSS Transforms 2, CSS Typed OM 1, CSSOM, Filter Effects 1, Intersection Observer, Scroll-driven Animations
<percentage> (CSS value for <padding-width> ) §: Defined in CSS 2.2
<percentage> (CSS value for vertical-align ) §: Defined in CSS 2.2
percentage (concept) §: Defined in CSS Values 3 , CSS Values 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Speech 1, CSS Typed OM 1
<percentage [0,∞]> (CSS value for text-size-adjust ) §: Defined in CSS Size Adjustment 1
<percentage-token> (CSS type) §: Defined in CSS Syntax 3; Referenced in CSS Typed OM 1, CSS Values 3, CSS Values 4
LayoutConstraints.percentageBlockSize (WebIDL attribute) §: Defined in CSS Layout API 1
LayoutConstraintsOptions.percentageBlockSize (WebIDL dictionary member) §: Defined in CSS Layout API 1
LayoutConstraints.percentageInlineSize (WebIDL attribute) §: Defined in CSS Layout API 1
LayoutConstraintsOptions.percentageInlineSize (WebIDL dictionary member) §: Defined in CSS Layout API 1
CSSNumericType.percentHint (WebIDL dictionary member) §: Defined in CSS Typed OM 1
perceptual (CSS value for rendering-intent descriptor of @color-profile @rule ) §: Defined in CSS Color 5
perform a microtask checkpoint (concept) §: Defined in HTML; Referenced in Web Bluetooth, Protected Audience, CSS Layout API 1, Long Tasks API, Web Animations, Web Animations 2, Web Audio API, Web Audio API 1.1
perform a scroll (concept) §: Defined in CSSOM View
perform a scroll (concept for viewport ) §: Defined in CSSOM View
perform a security check (concept) §: Defined in Web IDL; Referenced in HTML
perform the fetch hook (concept for fetching scripts ) §: Defined in HTML; Referenced in Service Workers
Performance (WebIDL interface) §: Defined in High Resolution Time; Referenced in Event Timing API; Related terms: Performance.eventCounts, Performance.interactionCount, Performance.navigation, Performance.onresourcetimingbufferfull, Performance.timeOrigin, Performance.timing, Performance.clearMarks(), Performance.clearMeasures(), Performance.clearResourceTimings(), Performance.getEntries(), Performance.getEntriesByName(), Performance.getEntriesByType(), Performance.mark(), Performance.measure(), Performance.measureUserAgentSpecificMemory(), Performance.now(), Performance.setResourceTimingBufferSize(), Performance.toJSON(); see also WebIDLPedia
WindowOrWorkerGlobalScope.performance (WebIDL attribute) §: Defined in High Resolution Time
performance entry buffer (concept) §: Defined in Performance Timeline; Referenced in Soft Navigations
performance timeline task source (concept) §: Defined in Performance Timeline; Referenced in Paint Timing, Resource Timing
PerformanceElementTiming (WebIDL interface) §: Defined in Element Timing API; Referenced in Timing Entry Names Registry; Related terms: PerformanceElementTiming.element, PerformanceElementTiming.id, PerformanceElementTiming.identifier, PerformanceElementTiming.intersectionRect, PerformanceElementTiming.loadTime, PerformanceElementTiming.naturalHeight, PerformanceElementTiming.naturalWidth, PerformanceElementTiming.renderTime, PerformanceElementTiming.url, PerformanceElementTiming.toJSON(); see also WebIDLPedia
PerformanceEntry (WebIDL interface) §: Defined in Performance Timeline; Referenced in HTML, Soft Navigations, Paint Timing; Related terms: PerformanceEntry.duration, PerformanceEntry.entryType, PerformanceEntry.id, PerformanceEntry.name, PerformanceEntry.navigationId, PerformanceEntry.startTime, PerformanceEntry.toJSON(); see also WebIDLPedia
PerformanceEntryList (WebIDL type alias) §: Defined in Performance Timeline; see also WebIDLPedia
PerformanceEventTiming (WebIDL interface) §: Defined in Event Timing API; Related terms: PerformanceEventTiming.cancelable, PerformanceEventTiming.interactionId, PerformanceEventTiming.processingEnd, PerformanceEventTiming.processingStart, PerformanceEventTiming.target, PerformanceEventTiming.toJSON(); see also WebIDLPedia
PerformanceLongAnimationFrameTiming (WebIDL interface) §: Defined in Long Animation Frames API; Related terms: PerformanceLongAnimationFrameTiming.blockingDuration, PerformanceLongAnimationFrameTiming.duration, PerformanceLongAnimationFrameTiming.entryType, PerformanceLongAnimationFrameTiming.firstUIEventTimestamp, PerformanceLongAnimationFrameTiming.name, PerformanceLongAnimationFrameTiming.renderStart, PerformanceLongAnimationFrameTiming.scripts, PerformanceLongAnimationFrameTiming.startTime, PerformanceLongAnimationFrameTiming.styleAndLayoutStart, PerformanceLongAnimationFrameTiming.toJSON(); see also WebIDLPedia
PerformanceLongTaskTiming (WebIDL interface) §: Defined in Long Tasks API; Related terms: PerformanceLongTaskTiming.attribution, PerformanceLongTaskTiming.duration, PerformanceLongTaskTiming.entryType, PerformanceLongTaskTiming.name, PerformanceLongTaskTiming.startTime, PerformanceLongTaskTiming.toJSON(); see also WebIDLPedia
PerformanceMark (WebIDL interface) §: Defined in User Timing 3; Related terms: PerformanceMark.detail, WebIDL constructor constructor(); see also WebIDLPedia
PerformanceMarkOptions (WebIDL dictionary) §: Defined in User Timing 3; Related terms: PerformanceMarkOptions.detail, PerformanceMarkOptions.startTime; see also WebIDLPedia
PerformanceMeasure (WebIDL interface) §: Defined in User Timing 3; Related terms: PerformanceMeasure.detail; see also WebIDLPedia
PerformanceMeasureOptions (WebIDL dictionary) §: Defined in User Timing 3; Related terms: PerformanceMeasureOptions.detail, PerformanceMeasureOptions.duration, PerformanceMeasureOptions.end, PerformanceMeasureOptions.start; see also WebIDLPedia
PerformanceNavigation (WebIDL interface) §: Defined in Navigation Timing 2; Related terms: PerformanceNavigation.redirectCount, PerformanceNavigation.type, PerformanceNavigation.TYPE_BACK_FORWARD, PerformanceNavigation.TYPE_NAVIGATE, PerformanceNavigation.TYPE_RELOAD, PerformanceNavigation.TYPE_RESERVED, PerformanceNavigation.toJSON(); see also WebIDLPedia
PerformanceNavigationTiming (WebIDL interface) §: Defined in Navigation Timing 2; Referenced in Prerendering Revamped, Service Workers; Related terms: PerformanceNavigationTiming.activationStart, PerformanceNavigationTiming.criticalCHRestart, PerformanceNavigationTiming.domComplete, PerformanceNavigationTiming.domContentLoadedEventEnd, PerformanceNavigationTiming.domContentLoadedEventStart, PerformanceNavigationTiming.domInteractive, PerformanceNavigationTiming.loadEventEnd, PerformanceNavigationTiming.loadEventStart, PerformanceNavigationTiming.notRestoredReasons, PerformanceNavigationTiming.redirectCount, PerformanceNavigationTiming.type, PerformanceNavigationTiming.unloadEventEnd, PerformanceNavigationTiming.unloadEventStart, PerformanceNavigationTiming.toJSON(); see also WebIDLPedia
PerformanceObserver (WebIDL interface) §: Defined in Performance Timeline; Related terms: PerformanceObserver.supportedEntryTypes, WebIDL constructor constructor(), PerformanceObserver.disconnect(), PerformanceObserver.observe(), PerformanceObserver.takeRecords(); see also WebIDLPedia
PerformanceObserverCallback (WebIDL callback) §: Defined in Performance Timeline
PerformanceObserverCallbackOptions (WebIDL dictionary) §: Defined in Performance Timeline; Related terms: PerformanceObserverCallbackOptions.droppedEntriesCount; see also WebIDLPedia
PerformanceObserverEntryList (WebIDL interface) §: Defined in Performance Timeline; Related terms: PerformanceObserverEntryList.getEntries(), PerformanceObserverEntryList.getEntriesByName(), PerformanceObserverEntryList.getEntriesByType(); see also WebIDLPedia
PerformanceObserverInit (WebIDL dictionary) §: Defined in Performance Timeline; Related terms: PerformanceObserverInit.buffered, PerformanceObserverInit.durationThreshold, PerformanceObserverInit.entryTypes, PerformanceObserverInit.type; see also WebIDLPedia
PerformancePaintTiming (WebIDL interface) §: Defined in Paint Timing; see also WebIDLPedia
PerformanceResourceTiming (WebIDL interface) §: Defined in Resource Timing; Referenced in Prefetch; Related terms: PerformanceResourceTiming.connectEnd, PerformanceResourceTiming.connectStart, PerformanceResourceTiming.contentType, PerformanceResourceTiming.decodedBodySize, PerformanceResourceTiming.deliveryType, PerformanceResourceTiming.domainLookupEnd, PerformanceResourceTiming.domainLookupStart, PerformanceResourceTiming.encodedBodySize, PerformanceResourceTiming.fetchStart, PerformanceResourceTiming.finalResponseHeadersStart, PerformanceResourceTiming.firstInterimResponseStart, PerformanceResourceTiming.initiatorType, PerformanceResourceTiming.nextHopProtocol, PerformanceResourceTiming.redirectEnd, PerformanceResourceTiming.redirectStart, PerformanceResourceTiming.renderBlockingStatus, PerformanceResourceTiming.requestStart, PerformanceResourceTiming.responseEnd, PerformanceResourceTiming.responseStart, PerformanceResourceTiming.responseStatus, PerformanceResourceTiming.secureConnectionStart, PerformanceResourceTiming.serverTiming, PerformanceResourceTiming.transferSize, PerformanceResourceTiming.workerStart, PerformanceResourceTiming.toJSON(); see also WebIDLPedia
PerformanceScriptTiming (WebIDL interface) §: Defined in Long Animation Frames API; Related terms: PerformanceScriptTiming.duration, PerformanceScriptTiming.entryType, PerformanceScriptTiming.executionStart, PerformanceScriptTiming.forcedStyleAndLayoutDuration, PerformanceScriptTiming.invoker, PerformanceScriptTiming.invokerType, PerformanceScriptTiming.name, PerformanceScriptTiming.pauseDuration, PerformanceScriptTiming.sourceCharPosition, PerformanceScriptTiming.sourceFunctionName, PerformanceScriptTiming.sourceURL, PerformanceScriptTiming.startTime, PerformanceScriptTiming.window, PerformanceScriptTiming.windowAttribution, PerformanceScriptTiming.toJSON(); see also WebIDLPedia
PerformanceServerTiming (WebIDL interface) §: Defined in Server Timing; Related terms: PerformanceServerTiming.description, PerformanceServerTiming.duration, PerformanceServerTiming.name, PerformanceServerTiming.toJSON(); see also WebIDLPedia
AudioTimestamp.performanceTime (WebIDL dictionary member) §
AudioTimestamp.performanceTime (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
PerformanceTiming (WebIDL interface) §: Defined in Navigation Timing 2; Related terms: PerformanceTiming.connectEnd, PerformanceTiming.connectStart, PerformanceTiming.domainLookupEnd, PerformanceTiming.domainLookupStart, PerformanceTiming.domComplete, PerformanceTiming.domContentLoadedEventEnd, PerformanceTiming.domContentLoadedEventStart, PerformanceTiming.domInteractive, PerformanceTiming.domLoading, PerformanceTiming.fetchStart, PerformanceTiming.loadEventEnd, PerformanceTiming.loadEventStart, PerformanceTiming.navigationStart, PerformanceTiming.redirectEnd, PerformanceTiming.redirectStart, PerformanceTiming.requestStart, PerformanceTiming.responseEnd, PerformanceTiming.responseStart, PerformanceTiming.secureConnectionStart, PerformanceTiming.unloadEventEnd, PerformanceTiming.unloadEventStart, PerformanceTiming.toJSON(); see also WebIDLPedia
PerformEval (algorithm) §: Defined in ECMAScript
PerformPromiseAll (algorithm) §: Defined in ECMAScript
PerformPromiseAllSettled (algorithm) §: Defined in ECMAScript
PerformPromiseAny (algorithm) §: Defined in ECMAScript
PerformPromiseRace (algorithm) §: Defined in ECMAScript
PerformPromiseThen (algorithm) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, ShadowRealm API, Source Phase Imports, Web IDL
ServiceWorkerRegistration.periodicSync (WebIDL attribute) §: Defined in Web Periodic Background Synchronization
PeriodicSyncEvent (WebIDL interface) §: Defined in Web Periodic Background Synchronization; Related terms: PeriodicSyncEvent.tag, new PeriodicSyncEvent(type, init); see also WebIDLPedia
new PeriodicSyncEvent(type, init) (WebIDL constructor) §: Defined in Web Periodic Background Synchronization
PeriodicSyncEventInit (WebIDL dictionary) §: Defined in Web Periodic Background Synchronization; Related terms: PeriodicSyncEventInit.tag; see also WebIDLPedia
PeriodicSyncManager (WebIDL interface) §: Defined in Web Periodic Background Synchronization; Referenced in HTML; Related terms: PeriodicSyncManager.getTags(), PeriodicSyncManager.register(tag, options), PeriodicSyncManager.unregister(tag); see also WebIDLPedia
OscillatorOptions.periodicWave (WebIDL dictionary member) §
OscillatorOptions.periodicWave (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
PeriodicWave (WebIDL interface) §: Defined in Web Audio API , Web Audio API 1.1; Related terms: undefined[[imag]], undefined[[normalize]], undefined[[real]], undefinedPeriodicWave(context, options); see also WebIDLPedia
new PeriodicWave(context, options) (WebIDL constructor) §
new PeriodicWave(context, options) (WebIDL constructor) §: Defined in Web Audio API , Web Audio API 1.1
PeriodicWaveConstraints (WebIDL dictionary) §: Defined in Web Audio API , Web Audio API 1.1; Related terms: undefineddisableNormalization; see also WebIDLPedia
PeriodicWaveOptions (WebIDL dictionary) §: Defined in Web Audio API , Web Audio API 1.1; Related terms: undefinedimag, undefinedreal; see also WebIDLPedia
permission (concept) §: Defined in Permissions; Referenced in Idle Detection API, Credential Management 1, Device Orientation and Motion; Related terms: concept denied, concept granted, concept lifetime, concept prompt
Notification.permission (WebIDL attribute) §: Defined in Notifications API; Referenced in Prerendering Revamped
permission descriptor type (concept for powerful feature ) §: Defined in Permissions; Referenced in Web Bluetooth, Web Bluetooth Scanning, File System Access, Requesting Permissions, Relinquishing Permissions, Private Network Access, WebUSB API, Clipboard API and events
permission key (concept) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API; Related terms: concept is equal to
permission key comparison algorithm (concept for powerful feature ) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API
permission key generation algorithm (concept for powerful feature ) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API
permission key type (concept for powerful feature ) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API
permission query algorithm (concept for powerful feature ) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API, Web Bluetooth, Web Bluetooth Scanning, WebUSB API
permission request algorithm (concept) §: Defined in Requesting Permissions; Referenced in File System, File System Access, WebUSB API, Generic Sensor API
permission result type (concept for powerful feature ) §: Defined in Permissions; Referenced in Web Bluetooth, Web Bluetooth Scanning, Requesting Permissions, WebUSB API
permission revocation algorithm (concept for powerful feature ) §: Defined in Permissions; Referenced in Storage, Web Bluetooth, Web Bluetooth Scanning, Accelerometer, Ambient Light Sensor, Generic Sensor API, Gyroscope, Magnetometer, Proximity Sensor
permission state (concept) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API, Storage, Web Bluetooth, Web Bluetooth Scanning, File System Access, Idle Detection API, Clipboard API and events, Generic Sensor API, Device Orientation and Motion
permission state constraints (concept for powerful feature ) §: Defined in Permissions; Referenced in File System Access
permission store (concept) §: Defined in Permissions
permission store entry (concept) §: Defined in Permissions; Referenced in requestStorageAccessFor API; Related terms: concept descriptor, concept key, concept state
GeolocationPositionError.PERMISSION_DENIED (WebIDL constant) §: Defined in Geolocation
PermissionDescriptor (WebIDL dictionary) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API, Web Bluetooth, Web Bluetooth Scanning, File System Access, User Agent Interaction with Related Website Sets, Local Font Access, Requesting Permissions, Relinquishing Permissions, Private Network Access, WebUSB API, Clipboard API and events, Generic Sensor API, MediaStream Image Capture; Related terms: concept stronger than, PermissionDescriptor.name; see also WebIDLPedia
Navigator.permissions (WebIDL attribute) §: Defined in Permissions; Referenced in File System Access
WorkerNavigator.permissions (WebIDL attribute) §: Defined in Permissions
Permissions (WebIDL interface) §: Defined in Permissions; Referenced in Requesting Permissions, Relinquishing Permissions; Related terms: Permissions.query(), Permissions.request(permissionDesc), Permissions.revoke(permissionDesc); see also WebIDLPedia
permissions policy (concept for Document ) §: Defined in HTML; Referenced in Fullscreen API, The Storage Access API, Client Hints Infrastructure, Digital Goods API, Document Policy, Fenced Frame, WebOTP API, Audio Output Devices API, Credential Management 1, Federated Credential Management API, Gamepad, Media Capture and Streams, Viewport Capture, Media Session, Payment Request API, Permissions Policy, Permissions, Screen Capture, Web Authentication, WebXR Device API
Permissions-Policy: (HTTP header) §: Defined in Permissions Policy; Referenced in Fullscreen API, Fenced Frame, Responsive Image Client Hints
Permissions-Policy-Report-Only: (HTTP header) §: Defined in Permissions Policy
PermissionSetParameters (WebIDL dictionary) §: Defined in Permissions; Related terms: PermissionSetParameters.descriptor, PermissionSetParameters.state; see also WebIDLPedia
PermissionsPolicy (WebIDL interface) §: Defined in Permissions Policy; Related terms: PermissionsPolicy.allowedFeatures(), PermissionsPolicy.allowsFeature(feature, origin), PermissionsPolicy.features(), PermissionsPolicy.getAllowlistForFeature(feature); see also WebIDLPedia
Document.permissionsPolicy (WebIDL attribute) §: Defined in Permissions Policy
HTMLIFrameElement.permissionsPolicy (WebIDL attribute) §: Defined in Permissions Policy
PermissionsPolicyViolationReportBody (WebIDL interface) §: Defined in Permissions Policy; Related terms: PermissionsPolicyViolationReportBody.columnNumber, PermissionsPolicyViolationReportBody.disposition, PermissionsPolicyViolationReportBody.featureId, PermissionsPolicyViolationReportBody.lineNumber, PermissionsPolicyViolationReportBody.sourceFile, PermissionsPolicyViolationReportBody.toJSON(); see also WebIDLPedia
PermissionState (WebIDL enumeration) §: Defined in Permissions; Referenced in File System, File System Access, Idle Detection API, Device Orientation and Motion; Related terms: value denied, value granted, value prompt; see also WebIDLPedia
PushManager.permissionState() (WebIDL operation) §: Defined in Push API
PermissionStatus (WebIDL interface) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API, Web Bluetooth, Web Bluetooth Scanning, File System Access, Requesting Permissions, Relinquishing Permissions, WebUSB API; Related terms: PermissionStatus.name, PermissionStatus.onchange, PermissionStatus.state; see also WebIDLPedia
CaptureHandleConfig.permittedOrigins (WebIDL dictionary member) §: Defined in Capture Handle - Bootstrapping Collaboration when Screensharing
MLTransposeOptions.permutation (WebIDL dictionary member) §: Defined in Web Neural Network API
persian (CSS value for <counter-style-name> ) §: Defined in CSS Counter Styles 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
Animation.persist() (WebIDL operation) §: Defined in Web Animations
StorageBucket.persist() (WebIDL operation) §: Defined in Storage Buckets API
StorageManager.persist() (WebIDL operation) §: Defined in Storage; Referenced in Prerendering Revamped
"persisted" (value for AnimationReplaceState WebIDL enumeration) §: Defined in Web Animations
"persisted" (value for AnimationReplacedState WebIDL enumeration) §: Defined in Web Animations
PageTransitionEvent.persisted (WebIDL attribute) §: Defined in HTML
StorageBucketOptions.persisted (WebIDL dictionary member) §: Defined in Storage Buckets API
StorageBucket.persisted() (WebIDL operation) §: Defined in Storage Buckets API
StorageManager.persisted() (WebIDL operation) §: Defined in Storage
persistent CSS style sheet (concept) §: Defined in CSSOM
"persistent-license" (value for MediaKeySessionType WebIDL enumeration) §: Defined in Encrypted Media Extensions
XRSession.persistentAnchors (WebIDL attribute) §: Defined in WebXR Anchors
PointerEvent.persistentDeviceId (WebIDL attribute) §: Defined in Pointer Events
PointerEventInit.persistentDeviceId (WebIDL dictionary member) §: Defined in Pointer Events
MediaCapabilitiesKeySystemConfiguration.persistentState (WebIDL dictionary member) §: Defined in Media Capabilities
MediaKeySystemConfiguration.persistentState (WebIDL dictionary member) §: Defined in Encrypted Media Extensions; Referenced in Media Capabilities
Window.personalbar (WebIDL attribute) §: Defined in HTML
perspective (CSS property) §: Defined in CSS Transforms 2; Referenced in Compatibility, CSS Table 3, CSS Typed OM 1, CSS View Transitions 2; Related terms: CSS value none
perspective (concept for interpolation type ) §: Defined in WebGPU Shading Language; Referenced in WebGPU
perspective-origin (CSS property) §: Defined in CSS Transforms 2; Referenced in Compatibility, CSS Typed OM 1; Related terms: CSS value bottom, CSS value center, CSS value left, CSS value right, CSS value top
perspective() (CSS function) §: Defined in CSS Transforms 2; Referenced in CSS Typed OM 1; Related terms: CSS value none
peru (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
peru (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
"petite-caps" (value for CanvasFontVariantCaps WebIDL enumeration) §: Defined in HTML
petite-caps (CSS value for font-variant-caps ) §: Defined in CSS Fonts 4; Referenced in CSS Snapshot 2023
AddressErrors.phone (WebIDL dictionary member) §: Defined in Payment Request API
ContactAddress.phone (WebIDL attribute) §: Defined in Contact Picker API
PayerErrors.phone (WebIDL dictionary member) §: Defined in Payment Request API
phone number (concept for physical address ) §: Defined in Contact Picker API
photo (value for autocomplete attribute of button element, autocomplete attribute of fieldset element, autocomplete attribute of input element, autocomplete attribute of object element, autocomplete attribute of output element, autocomplete attribute of select element, autocomplete attribute of textarea element ) §: Defined in HTML
PhotoCapabilities (WebIDL dictionary) §: Defined in MediaStream Image Capture; Related terms: PhotoCapabilities.fillLightMode, PhotoCapabilities.imageHeight, PhotoCapabilities.imageWidth, PhotoCapabilities.redEyeReduction; see also WebIDLPedia
PhotoSettings (WebIDL dictionary) §: Defined in MediaStream Image Capture; Related terms: PhotoSettings.fillLightMode, PhotoSettings.imageHeight, PhotoSettings.imageWidth, PhotoSettings.redEyeReduction; see also WebIDLPedia
Phrasing content (concept) §: Defined in HTML; Referenced in The <model> element, Fenced Frame, EPUB 3.3, ARIA in HTML, HTML Ruby Markup Extensions
physical (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Borders and Box Decorations 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Grid Layout 1, CSS Grid Layout 2, CSS Logical Properties 1, CSS Positioned Layout 3, CSS Sizing 3, Scroll-driven Animations
physical address (concept) §: Defined in Contact Picker API; Related terms: concept address line, concept city, concept country, concept dependent locality, concept organization, concept phone number, concept postal code, concept recipient, concept region, concept sorting code
physical bottom (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
physical dimensions (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
physical direction (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3
physical left (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Overflow 3, CSS Overflow 4
Physical miplevel-specific texture extent (algorithm) §: Defined in WebGPU
physical right (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3
physical top (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
physical unit (concept) §: Defined in CSS Values 3 , CSS Values 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
HIDReportItem.physicalMaximum (WebIDL dictionary member) §: Defined in WebHID API
HIDReportItem.physicalMinimum (WebIDL dictionary member) §: Defined in WebHID API
Math.PI (WebIDL constant) §: Defined in ECMAScript
pi (CSS value for calc() ) §: Defined in CSS Values 4; Referenced in CSS Color 5
"pickup" (value for PaymentShippingType WebIDL enumeration) §: Defined in Payment Request API
picture (markup element) §: Defined in HTML; Referenced in The <model> element, Responsive Image Client Hints, CSS Images 4, CSS User Interface 3, CSS User Interface 4, EPUB 3.3, Fetch Metadata, HTML Accessibility API Mappings 1.0, ARIA in HTML
IdentityProviderAccount.picture (WebIDL dictionary member) §: Defined in Federated Credential Management API
IdentityUserInfo.picture (WebIDL dictionary member) §: Defined in Federated Credential Management API
:picture-in-picture (CSS selector) §: Defined in Selectors 4
picture-in-picture (CSS value for display-mode descriptor of @media @rule ) §: Defined in Media Queries 5; Referenced in Document Picture-in-Picture
DocumentOrShadowRoot.pictureInPictureElement (WebIDL attribute) §: Defined in Picture-in-Picture; Referenced in Document Picture-in-Picture
Document.pictureInPictureEnabled (WebIDL attribute) §: Defined in Picture-in-Picture
PictureInPictureEvent (WebIDL interface) §: Defined in Picture-in-Picture; Related terms: PictureInPictureEvent.pictureInPictureWindow, new PictureInPictureEvent(type, eventInitDict); see also WebIDLPedia
new PictureInPictureEvent(type, eventInitDict) (WebIDL constructor) §: Defined in Picture-in-Picture
PictureInPictureEventInit (WebIDL dictionary) §: Defined in Picture-in-Picture; Related terms: PictureInPictureEventInit.pictureInPictureWindow; see also WebIDLPedia
pictureinpicturewindow (concept) §: Defined in HTML
PictureInPictureWindow (WebIDL interface) §: Defined in Picture-in-Picture; Referenced in HTML; Related terms: PictureInPictureWindow.height, PictureInPictureWindow.onresize, PictureInPictureWindow.width, event resize; see also WebIDLPedia
PictureInPictureEvent.pictureInPictureWindow (WebIDL attribute) §: Defined in Picture-in-Picture
PictureInPictureEventInit.pictureInPictureWindow (WebIDL dictionary member) §: Defined in Picture-in-Picture
"pictures" (value for WellKnownDirectory WebIDL enumeration) §: Defined in File System Access
ping (markup attribute for a, area element ) §: Defined in HTML , SVG 2; Referenced in Content Security Policy 3, HTML Accessibility API Mappings 1.0, Resource Timing, SVG 2
HTMLAnchorElement.ping (WebIDL attribute) §: Defined in HTML
HTMLAreaElement.ping (WebIDL attribute) §: Defined in HTML
SVGAElement.ping (WebIDL attribute) §: Defined in SVG 2
Ping-From: (HTTP header) §: Defined in HTML
Ping-To: (HTTP header) §: Defined in HTML
pingback (value for rel attribute of link element ) §: Defined in HTML
pink (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
pink (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
"pinky-finger-metacarpal" (value for XRHandJoint WebIDL enumeration) §: Defined in WebXR Hand Input 1
"pinky-finger-phalanx-distal" (value for XRHandJoint WebIDL enumeration) §: Defined in WebXR Hand Input 1
"pinky-finger-phalanx-intermediate" (value for XRHandJoint WebIDL enumeration) §: Defined in WebXR Hand Input 1
"pinky-finger-phalanx-proximal" (value for XRHandJoint WebIDL enumeration) §: Defined in WebXR Hand Input 1
"pinky-finger-tip" (value for XRHandJoint WebIDL enumeration) §: Defined in WebXR Hand Input 1
pipe (concept for ReadableStream ) §: Defined in Streams; Related terms: concept preventAbort, concept preventAbort, concept preventCancel, concept preventCancel, concept preventClose, concept preventClose, concept signal, concept signal
pipe through (concept for ReadableStream ) §: Defined in Streams; Referenced in Fetch; Related terms: concept preventAbort, concept preventAbort, concept preventCancel, concept preventCancel, concept preventClose, concept preventClose, concept signal, concept signal
GPUComputePassEncoder.[[pipeline]] (internal slot) §: Defined in WebGPU
GPURenderCommandsMixin.[[pipeline]] (internal slot) §: Defined in WebGPU
pipeline-creation error (concept) §: Defined in WebGPU Shading Language; Referenced in WebGPU
ReadableStream.pipeThrough(transform, options) (WebIDL operation) §: Defined in Streams; Referenced in Encoding
ReadableStream.pipeTo(destination, options) (WebIDL operation) §: Defined in Streams; Referenced in Web Serial API
pitch (CSS property) §: Defined in CSS 2.1; Referenced in CSS Typed OM 1
SpeechSynthesisUtterance.pitch (WebIDL attribute) §: Defined in Web Speech API
pitch-range (CSS property) §: Defined in CSS 2.1; Referenced in CSS Typed OM 1
"pixelated" (value for ResizeQuality WebIDL enumeration) §: Defined in HTML
pixelated (CSS value for image-rendering ) §: Defined in CSS Images 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
Screen.pixelDepth (WebIDL attribute) §: Defined in CSSOM View
"pkcs8" (value for KeyFormat WebIDL enumeration) §: Defined in Web Cryptography API
place-content (CSS property) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Grid Layout 1, CSS Grid Layout 2, CSS Overflow 3, CSS Typed OM 1
place-items (CSS property) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1
place-self (CSS property) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1
CSSPositionTryDescriptors.place-self (WebIDL attribute) §: Defined in CSS Anchor Positioning
::placeholder (CSS selector) §: Defined in CSS Pseudo-Elements 4; Referenced in CSS Conditional 5, CSS Generated Content 3
placeholder (markup attribute for input ) §: Defined in HTML; Referenced in CSS Pseudo-Elements 4, HTML Accessibility API Mappings 1.0, ARIA in HTML, Selectors 4, WAI-ARIA, WAI-ARIA
placeholder (markup attribute for textarea ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
HTMLInputElement.placeholder (WebIDL attribute) §: Defined in HTML
HTMLTextAreaElement.placeholder (WebIDL attribute) §: Defined in HTML
:placeholder-shown (CSS selector) §: Defined in Selectors 4; Referenced in CSS Pseudo-Elements 4
CSSPositionTryDescriptors.placeSelf (WebIDL attribute) §: Defined in CSS Anchor Positioning
"plain-text" (value for AISummarizerFormat WebIDL enumeration) §: Defined in Writing Assistance APIs
plaintext (markup element) §: Defined in HTML
plaintext (CSS value for unicode-bidi ) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, WebVTT: The Web Video Text Tracks Format
plaintext-only (value for contenteditable attribute of html-global ) §: Defined in HTML
Plane (concept) §: Defined in Internationalization Glossary
"plane" (value for XRHitTestTrackableType WebIDL enumeration) §: Defined in WebXR Hit Test
AudioDataCopyToOptions.planeIndex (WebIDL dictionary member) §: Defined in WebCodecs
PlaneLayout (WebIDL dictionary) §: Defined in WebCodecs; Related terms: PlaneLayout.offset, PlaneLayout.stride; see also WebIDLPedia
XRPlane.planeSpace (WebIDL attribute) §: Defined in WebXR Plane Detection
platform (concept) §: Defined in Web App Manifest - Application Information
"platform" (value for AuthenticatorAttachment WebIDL enumeration) §: Defined in Web Authentication; Referenced in Secure Payment Confirmation
NavigatorID.platform (WebIDL attribute) §: Defined in HTML; Referenced in Measure Memory API
NavigatorUAData.platform (WebIDL attribute) §: Defined in User-Agent Client Hints
RelatedApplication.platform (WebIDL dictionary member) §: Defined in Get Installed Related Apps API
UADataValues.platform (WebIDL dictionary member) §: Defined in User-Agent Client Hints
UALowEntropyJSON.platform (WebIDL dictionary member) §: Defined in User-Agent Client Hints
platform architecture (concept for user agent ) §: Defined in User-Agent Client Hints
platform bitness (concept for user agent ) §: Defined in User-Agent Client Hints
platform brand (concept for user agent ) §: Defined in User-Agent Client Hints
platform object (concept) §: Defined in Web IDL; Referenced in HTML, Streams, WebDriver BiDi; Related terms: platform object.[[Detached]]
platform version (concept for user agent ) §: Defined in User-Agent Client Hints
UADataValues.platformVersion (WebIDL dictionary member) §: Defined in User-Agent Client Hints
play (event for HTMLMediaElement ) §: Defined in HTML
"play" (value for MediaSessionAction WebIDL enumeration) §: Defined in Media Session
play state (concept for animation ) §: Defined in Web Animations; Referenced in CSS Animations 2, CSS View Transitions 1, Web Animations 2; Related terms: concept finished, concept idle, concept paused, concept running
"play-and-record" (value for AudioSessionType WebIDL enumeration) §: Defined in Audio Session
play-during (CSS property) §: Defined in CSS 2.1; Referenced in CSS Typed OM 1
Animation.play() (WebIDL operation) §: Defined in Web Animations; Referenced in CSS Animations 2
HTMLMediaElement.play() (WebIDL operation) §: Defined in HTML; Referenced in Autoplay Policy Detection, Media Capture and Streams, Open Screen Protocol
AnimationTimeline.play(effect) (WebIDL operation) §: Defined in Web Animations 2
"playback" (value for AudioSessionType WebIDL enumeration) §: Defined in Audio Session
"playback" (value for AudioContextLatencyCategory WebIDL enumeration) §: Defined in Web Audio API , Web Audio API 1.1
PlaybackDirection (WebIDL enumeration) §: Defined in Web Animations; Related terms: value alternate, value alternate-reverse, value auto, value backwards, value both, value forwards, value none, value normal, value reverse; see also WebIDLPedia
Animation.playbackRate (WebIDL attribute) §: Defined in Web Animations
AudioBufferSourceNode.playbackRate (WebIDL attribute) §
AudioBufferSourceNode.playbackRate (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
AudioBufferSourceOptions.playbackRate (WebIDL dictionary member) §
AudioBufferSourceOptions.playbackRate (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
EffectTiming.playbackRate (WebIDL dictionary member) §: Defined in Web Animations 2
HTMLMediaElement.playbackRate (WebIDL attribute) §: Defined in HTML; Referenced in Media Capture from DOM Elements, Media Capture and Streams, Open Screen Protocol
MediaPositionState.playbackRate (WebIDL dictionary member) §: Defined in Media Session
OptionalEffectTiming.playbackRate (WebIDL dictionary member) §: Defined in Web Animations 2
MediaSession.playbackState (WebIDL attribute) §: Defined in Media Session
AudioProcessingEvent.playbackTime (WebIDL attribute) §
AudioProcessingEvent.playbackTime (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
AudioProcessingEventInit.playbackTime (WebIDL dictionary member) §
AudioProcessingEventInit.playbackTime (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
HTMLMediaElement.played (WebIDL attribute) §: Defined in HTML; Referenced in Media Capture and Streams, Open Screen Protocol
GamepadHapticActuator.playEffect() (WebIDL operation) §: Defined in Gamepad
:playing (CSS selector) §: Defined in Selectors 4
playing (event for HTMLMediaElement ) §: Defined in HTML
"playing" (value for MediaSessionPlaybackState WebIDL enumeration) §: Defined in Media Session
RTCInboundRtpStreamStats.playoutId (WebIDL dictionary member) §: Defined in WebRTC Statistics
playsinline (markup attribute for video ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
HTMLVideoElement.playsInline (WebIDL attribute) §: Defined in HTML
Animation.playState (WebIDL attribute) §: Defined in Web Animations; Referenced in CSS Animations 2
RTCInboundRtpStreamStats.pliCount (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCOutboundRtpStreamStats.pliCount (WebIDL dictionary member) §: Defined in WebRTC Statistics
Plugin (WebIDL interface) §: Defined in HTML; Related terms: Plugin.description, Plugin.filename, Plugin.length, Plugin.name, Plugin.item(index), Plugin.namedItem(name); see also WebIDLPedia
PluginArray (WebIDL interface) §: Defined in HTML; Related terms: PluginArray.length, PluginArray.item(index), PluginArray.namedItem(name), PluginArray.refresh(); see also WebIDLPedia
plugins (concept) §: Defined in HTML
Document.plugins (WebIDL attribute) §: Defined in HTML
NavigatorPlugins.plugins (WebIDL attribute) §: Defined in HTML
plum (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
plum (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
PMI (concept) §: Defined in Payment Method Identifiers; Referenced in Payment Method Manifest
"point" (value for XRHitTestTrackableType WebIDL enumeration) §: Defined in WebXR Hit Test
"point-list" (value for GPUPrimitiveTopology WebIDL enumeration) §: Defined in WebGPU
Point2D (WebIDL dictionary) §: Defined in MediaStream Image Capture; Referenced in Accelerated Shape Detection in Images, Accelerated Text Detection in Images; Related terms: Point2D.x, Point2D.y; see also WebIDLPedia
pointer (CSS value for cursor ) §: Defined in CSS User Interface 3 , CSS User Interface 4 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
pointer (CSS descriptor for @media ) §: Defined in Media Queries 4 , Media Queries 5; Related terms: CSS value coarse, CSS value fine, CSS value none
Pointer capture (concept) §: Defined in Pointer Events; Referenced in CSS View Transitions 1
pointer-events (CSS property) §: Defined in CSS User Interface 4 , SVG 2; Referenced in CSS Display 4, CSS Containment 2, CSS Display 3, CSS Masking 1, CSS Typed OM 1, CSS View Transitions 1, CSSOM View, Filter Effects 1, SVG Accessibility API Mappings; Related terms: CSS value auto, CSS value none
NodeIterator.pointerBeforeReferenceNode (WebIDL attribute) §: Defined in DOM
pointercancel (event for GlobalEventHandlers ) §: Defined in Pointer Events
pointerdown (event for GlobalEventHandlers ) §: Defined in Pointer Events
pointerenter (event for GlobalEventHandlers ) §: Defined in Pointer Events
PointerEvent (WebIDL interface) §: Defined in Pointer Events; Referenced in Ink API; Related terms: PointerEvent.altitudeAngle, PointerEvent.azimuthAngle, PointerEvent.height, PointerEvent.isPrimary, PointerEvent.persistentDeviceId, PointerEvent.pointerId, PointerEvent.pointerType, PointerEvent.pressure, PointerEvent.tangentialPressure, PointerEvent.tiltX, PointerEvent.tiltY, PointerEvent.twist, PointerEvent.width, WebIDL constructor constructor(), PointerEvent.getCoalescedEvents(), PointerEvent.getPredictedEvents(); see also WebIDLPedia
PointerEventInit (WebIDL dictionary) §: Defined in Pointer Events; Related terms: PointerEventInit.altitudeAngle, PointerEventInit.azimuthAngle, PointerEventInit.coalescedEvents, PointerEventInit.height, PointerEventInit.isPrimary, PointerEventInit.persistentDeviceId, PointerEventInit.pointerId, PointerEventInit.pointerType, PointerEventInit.predictedEvents, PointerEventInit.pressure, PointerEventInit.tangentialPressure, PointerEventInit.tiltX, PointerEventInit.tiltY, PointerEventInit.twist, PointerEventInit.width; see also WebIDLPedia
PointerEvent.pointerId (WebIDL attribute) §: Defined in Pointer Events; Referenced in Event Timing API
PointerEventInit.pointerId (WebIDL dictionary member) §: Defined in Pointer Events
pointerleave (event for GlobalEventHandlers ) §: Defined in Pointer Events
pointerlockchange (event) §: Defined in Pointer Lock 2.0
DocumentOrShadowRoot.pointerLockElement (WebIDL attribute) §: Defined in Pointer Lock 2.0
pointerlockerror (event) §: Defined in Pointer Lock 2.0
PointerLockOptions (WebIDL dictionary) §: Defined in Pointer Lock 2.0; Related terms: PointerLockOptions.unadjustedMovement; see also WebIDLPedia
pointermove (event for GlobalEventHandlers ) §: Defined in Pointer Events
InputDeviceCapabilities.pointerMovementScrolls (WebIDL attribute) §: Defined in Input Device Capabilities
InputDeviceCapabilitiesInit.pointerMovementScrolls (WebIDL dictionary member) §: Defined in Input Device Capabilities
pointerout (event for GlobalEventHandlers ) §: Defined in Pointer Events
pointerover (event for GlobalEventHandlers ) §: Defined in Pointer Events
pointerrawupdate (event for GlobalEventHandlers ) §: Defined in Pointer Events
PointerEvent.pointerType (WebIDL attribute) §: Defined in Pointer Events; Referenced in HTML
PointerEventInit.pointerType (WebIDL dictionary member) §: Defined in Pointer Events
<points> (CSS type) §: Defined in SVG 2; Referenced in SVG Animations 2
points (markup attribute for polyline ) §: Defined in SVG 2
points (markup attribute for polygon ) §: Defined in SVG 2; Referenced in SVG Animations 2
SVGAnimatedPoints.points (WebIDL attribute) §: Defined in SVG 2
pointsAtX (markup attribute for feSpotLight ) §: Defined in Filter Effects 1
SVGFESpotLightElement.pointsAtX (WebIDL attribute) §: Defined in Filter Effects 1
pointsAtY (markup attribute for feSpotLight ) §: Defined in Filter Effects 1
SVGFESpotLightElement.pointsAtY (WebIDL attribute) §: Defined in Filter Effects 1
pointsAtZ (markup attribute for feSpotLight ) §: Defined in Filter Effects 1
SVGFESpotLightElement.pointsAtZ (WebIDL attribute) §: Defined in Filter Effects 1
MediaTrackConstraintSet.pointsOfInterest (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackSettings.pointsOfInterest (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackSupportedConstraints.pointsOfInterest (WebIDL dictionary member) §: Defined in MediaStream Image Capture
<polar-color-space> (CSS type) §: Defined in CSS Color 4 , CSS Color 5
policy (concept for violation ) §: Defined in Content Security Policy 3; Referenced in Isolated Contexts, Content Security Policy: Embedded Enforcement; Related terms: concept directive set, concept disposition, concept self-origin, concept source, concept subsume, concept subsumed by
policy container (concept for request ) §: Defined in Fetch; Referenced in HTML, Prefetch, Private Network Access, Protected Audience, Content Security Policy 3, WebTransport
policy container (concept for Document ) §: Defined in HTML; Referenced in Fenced Frame, Prefetch, Private Network Access, Content Security Policy 3, Referrer Policy
policy container (concept) §: Defined in HTML; Referenced in Fetch, Fenced Frame, Private Network Access, Protected Audience, Content Security Policy 3, Referrer Policy, Service Workers; Related terms: concept CSP list, concept embedder policy, concept IP address space, concept referrer policy
policy container (concept for environment settings object ) §: Defined in HTML; Referenced in Fetch, Isolated Contexts, Private Network Access, Protected Audience, Content Security Policy 3, Service Workers, WebTransport
policy container (concept for WorkerGlobalScope ) §: Defined in HTML; Referenced in Private Network Access, Compute Pressure 1, Referrer Policy, Service Workers
policy container (concept for script resource ) §: Defined in Service Workers
policy-controlled client hints features (concept) §: Defined in Client Hints Infrastructure; Referenced in User-Agent Client Hints, User Preference Media Features Client Hints Headers
policy-controlled feature (concept) §: Defined in Permissions Policy; Referenced in Fullscreen API, Private Aggregation API, Topics API, The Storage Access API, Web Bluetooth, Web Bluetooth Scanning, Attribution Reporting, Client Hints Infrastructure, Digital Goods API, Fenced Frame, Idle Detection API, Keyboard Map, Local Font Access, Shared Storage API, Private State Token API, Protected Audience, User Preference Media Features Client Hints Headers, WebOTP API, WebUSB API, Accelerometer, Ambient Light Sensor, Federated Credential Management API, Generic Sensor API, Geolocation Sensor, Gyroscope, Magnetometer, Media Session, Device Orientation and Motion, Orientation Sensor, Picture-in-Picture, Proximity Sensor, Web Authentication, Web Neural Network API, Window Management; Related terms: concept default allowlist
policy-token (grammar) §: Defined in Referrer Policy
polygon (markup element) §: Defined in SVG 2; Related terms: markup attribute points, markup attribute requiredExtensions, markup attribute systemLanguage
XRPlane.polygon (WebIDL attribute) §: Defined in WebXR Plane Detection
polygon state (value for shape attribute of area element ) §: Defined in HTML
polygon() (CSS function for <basic-shape> ) §: Defined in CSS Shapes 1
polyline (markup element) §: Defined in SVG 2; Related terms: markup attribute points, markup attribute requiredExtensions, markup attribute systemLanguage
pop (concept for stack ) §: Defined in Infra; Referenced in Console, HTML, Web IDL, User-Agent Client Hints, WebHID API, CSS Syntax 3, Publication Manifest, WebGPU
Array.pop() (WebIDL operation) §: Defined in ECMAScript
GPUDebugCommandsMixin.popDebugGroup() (WebIDL operation) §: Defined in WebGPU
GPUDevice.popErrorScope() (WebIDL operation) §: Defined in WebGPU
popover (markup attribute for html-global ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0; Related terms: value auto, value manual
HTMLElement.popover (WebIDL attribute) §: Defined in HTML
popover visibility state (concept) §: Defined in HTML; Referenced in Fullscreen API; Related terms: concept hidden, concept showing
PopoverInvokerElement (WebIDL interface) §: Defined in HTML; see also WebIDLPedia
popovertarget (markup attribute for html-global ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
popovertargetaction (markup attribute for html-global ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0; Related terms: value hide, value show, value toggle
HTMLElement.popoverTargetAction (WebIDL attribute) §: Defined in HTML
HTMLElement.popoverTargetElement (WebIDL attribute) §: Defined in HTML
popstate (event for Window ) §: Defined in HTML
PopStateEvent (WebIDL interface) §: Defined in HTML; Related terms: PopStateEvent.hasUAVisualTransition, PopStateEvent.state; see also WebIDLPedia
PopStateEventInit (WebIDL dictionary) §: Defined in HTML; Related terms: PopStateEventInit.hasUAVisualTransition, PopStateEventInit.state; see also WebIDLPedia
OrientationSensor.populateMatrix(targetMatrix) (WebIDL operation) §: Defined in Orientation Sensor
port (concept for origin ) §: Defined in HTML; Referenced in Private Aggregation API, Attribution Reporting, Protected Audience, Secure Contexts
port (concept for url ) §: Defined in URL; Referenced in Fetch, HTML, Private Aggregation API, URL Pattern, A Well-Known URL for Passkey Endpoints, WebDriver BiDi, WebSockets, Attribution Reporting, Protected Audience, A Well-Known URL for Changing Passwords, Content Security Policy 3, Upgrade Insecure Requests, Web Authentication, WebDriver
port (concept for state of constructor string parser ) §: Defined in URL Pattern
AudioWorklet.port (WebIDL attribute) §
AudioWorklet.port (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
AudioWorkletGlobalScope.port (WebIDL attribute) §
AudioWorkletGlobalScope.port (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
AudioWorkletNode.port (WebIDL attribute) §
AudioWorkletNode.port (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
AudioWorkletProcessor.port (WebIDL attribute) §
AudioWorkletProcessor.port (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
HTMLHyperlinkElementUtils.port (WebIDL attribute) §: Defined in HTML
Location.port (WebIDL attribute) §: Defined in HTML
MIDIConnectionEvent.port (WebIDL attribute) §: Defined in Web MIDI API
MIDIConnectionEventInit.port (WebIDL dictionary member) §: Defined in Web MIDI API
RTCIceCandidate.port (WebIDL attribute) §: Defined in WebRTC 1.0
RTCIceCandidateStats.port (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCPeerConnectionIceErrorEvent.port (WebIDL attribute) §: Defined in WebRTC 1.0
RTCPeerConnectionIceErrorEventInit.port (WebIDL dictionary member) §: Defined in WebRTC 1.0
SharedWorker.port (WebIDL attribute) §: Defined in HTML
port (WebIDL attribute for URL ) §: Defined in URL; Referenced in Content Security Policy 3
URLPattern.port (WebIDL attribute) §: Defined in URL Pattern
URLPatternInit.port (WebIDL dictionary member) §: Defined in URL Pattern
URLPatternResult.port (WebIDL dictionary member) §: Defined in URL Pattern
WorkerLocation.port (WebIDL attribute) §: Defined in HTML
port state (concept for basic URL parser ) §: Defined in URL; Referenced in HTML, URL Pattern
port-part (grammar) §: Defined in Content Security Policy 3; Referenced in Content Security Policy: Embedded Enforcement
port-part matches (concept) §: Defined in Content Security Policy 3
MessageChannel.port1 (WebIDL attribute) §: Defined in HTML; Referenced in Media Source Extensions™, Web Audio API, Web Audio API 1.1
MessageChannel.port2 (WebIDL attribute) §: Defined in HTML; Referenced in Media Source Extensions™, Web Audio API, Web Audio API 1.1
portal (markup element) §: Defined in Portals; Related terms: markup attribute referrerpolicy, markup attribute src
portal-src (concept) §: Defined in Portals
portalactivate (event for Window ) §: Defined in Portals
PortalActivateEvent (WebIDL interface) §: Defined in Portals; Related terms: PortalActivateEvent.data, new PortalActivateEvent(type, eventInitDict), PortalActivateEvent.adoptPredecessor(); see also WebIDLPedia
new PortalActivateEvent(type, eventInitDict) (WebIDL constructor) §: Defined in Portals
PortalActivateEventInit (WebIDL dictionary) §: Defined in Portals; Related terms: PortalActivateEventInit.data; see also WebIDLPedia
PortalActivateOptions (WebIDL dictionary) §: Defined in Portals; Related terms: PortalActivateOptions.data; see also WebIDLPedia
portalHost (WebIDL attribute for Window ) §: Defined in Portals
PortalHost (WebIDL interface) §: Defined in Portals; Related terms: PortalHost.onmessage, PortalHost.onmessageerror, event message, event messageerror, PortalHost.postMessage(message, options); see also WebIDLPedia
portrait (CSS value for orientation descriptor of @container @rule ) §: Defined in CSS Conditional 5
portrait (concept) §: Defined in CSS Paged Media 3
portrait (CSS value for size descriptor of @page @rule ) §: Defined in CSS Paged Media 3
portrait (CSS value for orientation descriptor of @media @rule ) §: Defined in Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSSOM
"portrait" (value for OrientationLockType WebIDL enumeration) §: Defined in Screen Orientation
"portrait-primary" (value for OrientationLockType WebIDL enumeration) §: Defined in Screen Orientation
"portrait-primary" (value for OrientationType WebIDL enumeration) §: Defined in Screen Orientation
"portrait-secondary" (value for OrientationLockType WebIDL enumeration) §: Defined in Screen Orientation
"portrait-secondary" (value for OrientationType WebIDL enumeration) §: Defined in Screen Orientation
ExtendableMessageEvent.ports (WebIDL attribute) §: Defined in Service Workers
ExtendableMessageEventInit.ports (WebIDL dictionary member) §: Defined in Service Workers
MessageEvent.ports (WebIDL attribute) §: Defined in HTML; Referenced in Portals, Service Workers
MessageEventInit.ports (WebIDL dictionary member) §: Defined in HTML
Gamepad.pose (WebIDL attribute) §: Defined in Gamepad Extensions
<position> (CSS type) §: Defined in CSS Values 3 , CSS Values 4 , CSS Values 5; Referenced in CSS Backgrounds 4, CSS Backgrounds 3, CSS Images 3, CSS Shapes 1, CSS Transforms 2; Related terms: CSS value block-end, CSS value block-start, CSS value bottom, CSS value center, CSS value inline-end, CSS value inline-start, CSS value left, CSS value right, CSS value top, CSS value x-end, CSS value x-start, CSS value y-end, CSS value y-start
position (concept for boundary point ) §: Defined in DOM
position (CSS property) §: Defined in CSS Positioned Layout 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Display 4, CSS Overflow 5, CSS Positioned Layout 4, Quirks Mode, CSS Anchor Positioning, CSS Containment 2, CSS Display 3, CSS Flexbox 1, CSS GCPM 3, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Layout API 1, CSS Lists 3, CSS Multicol 1, CSS Paged Media 3, CSS Scroll Anchoring 1, CSS Table 3, CSS Typed OM 1, CSS User Interface 4, CSS Exclusions 1, CSSOM View, SVG 2, WebVTT: The Web Video Text Tracks Format; Related terms: CSS value absolute, CSS value fixed, CSS value relative, CSS value static, CSS value sticky
GamepadPose.position (WebIDL attribute) §: Defined in Gamepad Extensions
GamepadTouch.position (WebIDL attribute) §: Defined in Gamepad Extensions
HTMLProgressElement.position (WebIDL attribute) §: Defined in HTML
MediaPositionState.position (WebIDL dictionary member) §: Defined in Media Session
VTTCue.position (WebIDL attribute) §: Defined in WebVTT: The Web Video Text Tracks Format
WriteParams.position (WebIDL dictionary member) §: Defined in File System
XRRigidTransform.position (WebIDL attribute) §: Defined in WebXR Device API; Referenced in WebXR Layers API 1
position options list (concept) §: Defined in CSS Anchor Positioning
position variable (concept for string ) §: Defined in Infra; Referenced in Fetch, HTML, MIME Sniffing, Source Map, URL Fragment Text Directives, Protected Audience, File API, Server Timing
GeolocationPositionError.POSITION_UNAVAILABLE (WebIDL constant) §: Defined in Geolocation
position-anchor (CSS property) §: Defined in CSS Anchor Positioning; Related terms: CSS value <anchor-name>, CSS value auto
CSSPositionTryDescriptors.position-anchor (WebIDL attribute) §: Defined in CSS Anchor Positioning
<'position-area'> (CSS value for position-try-fallbacks ) §: Defined in CSS Anchor Positioning
<position-area> (CSS type) §: Defined in CSS Anchor Positioning; Related terms: CSS value block-end, CSS value block-self-end, CSS value block-self-start, CSS value block-start, CSS value bottom, CSS value center, CSS value end, CSS value inline-end, CSS value inline-self-end, CSS value inline-self-start, CSS value inline-start, CSS value left, CSS value right, CSS value self-end, CSS value self-start, CSS value span-all, CSS value span-block-end, CSS value span-block-start, CSS value span-bottom, CSS value span-end, CSS value span-inline-end, CSS value span-inline-start, CSS value span-start, CSS value span-top, CSS value span-x-end, CSS value span-x-start, CSS value span-y-end, CSS value span-y-start, CSS value start, CSS value top, CSS value x-end, CSS value x-self-end, CSS value x-self-start, CSS value x-start, CSS value y-end, CSS value y-self-end, CSS value y-self-start, CSS value y-start
<position-area> (CSS value for position-area ) §: Defined in CSS Anchor Positioning
position-area (CSS property) §: Defined in CSS Anchor Positioning; Referenced in CSS Positioned Layout 4, CSS Positioned Layout 3; Related terms: CSS value block-end, CSS value block-self-end, CSS value block-self-start, CSS value block-start, CSS value bottom, CSS value center, CSS value end, CSS value inline-end, CSS value inline-self-end, CSS value inline-self-start, CSS value inline-start, CSS value left, CSS value none, CSS value <position-area>, CSS value right, CSS value self-end, CSS value self-start, CSS value span-all, CSS value span-block-end, CSS value span-block-start, CSS value span-bottom, CSS value span-end, CSS value span-inline-end, CSS value span-inline-start, CSS value span-start, CSS value span-top, CSS value span-x-end, CSS value span-x-start, CSS value span-y-end, CSS value span-y-start, CSS value start, CSS value top, CSS value x-end, CSS value x-self-end, CSS value x-self-start, CSS value x-start, CSS value y-end, CSS value y-self-end, CSS value y-self-start, CSS value y-start
CSSPositionTryDescriptors.position-area (WebIDL attribute) §: Defined in CSS Anchor Positioning
position-area grid (concept) §: Defined in CSS Anchor Positioning; Referenced in CSS Positioned Layout 3
<position-four> (CSS type) §: Defined in CSS Values 5
<position-one> (CSS type) §: Defined in CSS Values 5
<position-three> (CSS type) §: Defined in CSS Backgrounds 4
@position-try (CSS @rule) §: Defined in CSS Anchor Positioning
position-try (CSS property) §: Defined in CSS Anchor Positioning; Referenced in CSS Positioned Layout 3
position-try-fallbacks (CSS property) §: Defined in CSS Anchor Positioning; Related terms: CSS type <try-tactic>, CSS value <dashed-ident> || <try-tactic>, CSS value flip-block, CSS value flip-inline, CSS value flip-start, CSS value none, CSS value <'position-area'>, CSS value <try-tactic>
position-try-order (CSS property) §: Defined in CSS Anchor Positioning; Related terms: CSS value most-block-size, CSS value most-height, CSS value most-inline-size, CSS value most-width, CSS value normal
<position-two> (CSS type) §: Defined in CSS Values 5
position-visibility (CSS property) §: Defined in CSS Anchor Positioning; Related terms: CSS value always, CSS value anchors-valid, CSS value anchors-visible, CSS value no-overflow
VTTCue.positionAlign (WebIDL attribute) §: Defined in WebVTT: The Web Video Text Tracks Format
PositionAlignSetting (WebIDL enumeration) §: Defined in WebVTT: The Web Video Text Tracks Format; Related terms: value auto, value center, value line-left, value line-right; see also WebIDLPedia
CSSPositionTryDescriptors.positionAnchor (WebIDL attribute) §: Defined in CSS Anchor Positioning
CSSPositionTryDescriptors.positionArea (WebIDL attribute) §: Defined in CSS Anchor Positioning
PositionCallback (WebIDL callback) §: Defined in Geolocation
positioned box (concept) §: Defined in CSS Positioned Layout 3; Referenced in CSS Inline Layout 3, CSS Overflow 4, UI Events
positioned element/box (concept) §: Defined in CSS 2.1
PositionErrorCallback (WebIDL callback) §: Defined in Geolocation
positioning rectangle (concept) §: Defined in SVG 2
positioning scheme (concept) §: Defined in CSS Positioned Layout 3
positioning scheme (concept) §: Defined in CSS 2.1
PositionOptions (WebIDL dictionary) §: Defined in Geolocation; Related terms: PositionOptions.enableHighAccuracy, PositionOptions.maximumAge, PositionOptions.timeout; see also WebIDLPedia
AudioListener.positionX (WebIDL attribute) §
AudioListener.positionX (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
PannerNode.positionX (WebIDL attribute) §
PannerNode.positionX (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
PannerOptions.positionX (WebIDL dictionary member) §
PannerOptions.positionX (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
AudioListener.positionY (WebIDL attribute) §
AudioListener.positionY (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
PannerNode.positionY (WebIDL attribute) §
PannerNode.positionY (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
PannerOptions.positionY (WebIDL dictionary member) §
PannerOptions.positionY (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
AudioListener.positionZ (WebIDL attribute) §
AudioListener.positionZ (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
PannerNode.positionZ (WebIDL attribute) §
PannerNode.positionZ (WebIDL attribute) §: Defined in Web Audio API , Web Audio API 1.1
PannerOptions.positionZ (WebIDL dictionary member) §
PannerOptions.positionZ (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
Number.POSITIVE_INFINITY (WebIDL attribute) §: Defined in ECMAScript
possible read values (concept for ECMAScript ) §: Defined in ECMAScript
post (value for formmethod attribute of button element, method attribute of form element, formmethod attribute of input element ) §: Defined in HTML
POST resource (concept) §: Defined in HTML; Referenced in Prefetch, Prerendering Revamped, Web App Launch Handler API, Web Application Manifest; Related terms: concept request body, concept request content-type
post-connection steps (concept) §: Defined in DOM; Referenced in HTML
post-multiplied (concept) §: Defined in CSS Transforms 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, Intersection Observer
post-multiply (concept) §: Defined in CSS Transforms 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
post-multiply (concept) §: Defined in Geometry Interfaces 1
post-redirect start time (concept for fetch timing info ) §: Defined in Fetch; Referenced in WebDriver BiDi, Resource Timing
post-request check (concept for directive ) §: Defined in Content Security Policy 3; Referenced in Portals
postal code (concept for physical address ) §: Defined in Contact Picker API
postal-code (value for autocomplete attribute of button element, autocomplete attribute of fieldset element, autocomplete attribute of input element, autocomplete attribute of object element, autocomplete attribute of output element, autocomplete attribute of select element, autocomplete attribute of textarea element ) §: Defined in HTML
AddressErrors.postalCode (WebIDL dictionary member) §: Defined in Payment Request API
ContactAddress.postalCode (WebIDL attribute) §: Defined in Contact Picker API
poster (markup attribute for video ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, Resource Timing
poster (markup attribute for model ) §: Defined in The <model> element
HTMLVideoElement.poster (WebIDL attribute) §: Defined in HTML
::postfix (CSS selector for ::first-letter ) §: Defined in CSS Pseudo-Elements 4
Client.postMessage(message, options) (WebIDL operation) §: Defined in Service Workers
DedicatedWorkerGlobalScope.postMessage(message, options) (WebIDL operation) §: Defined in HTML
HTMLPortalElement.postMessage(message, options) (WebIDL operation) §: Defined in Portals
MessagePort.postMessage(message, options) (WebIDL operation) §: Defined in HTML; Referenced in WebRTC 1.0
PortalHost.postMessage(message, options) (WebIDL operation) §: Defined in Portals
ServiceWorker.postMessage(message, options) (WebIDL operation) §: Defined in Service Workers; Referenced in Prerendering Revamped
Window.postMessage(message, options) (WebIDL operation) §: Defined in HTML; Referenced in Prioritized Task Scheduling, High Resolution Time
Worker.postMessage(message, options) (WebIDL operation) §: Defined in HTML; Referenced in File API
Window.postMessage(message, targetOrigin, transfer) (WebIDL operation) §: Defined in HTML; Referenced in Open Screen Protocol
Client.postMessage(message, transfer) (WebIDL operation) §: Defined in Service Workers
DedicatedWorkerGlobalScope.postMessage(message, transfer) (WebIDL operation) §: Defined in HTML
MessagePort.postMessage(message, transfer) (WebIDL operation) §: Defined in HTML
ServiceWorker.postMessage(message, transfer) (WebIDL operation) §: Defined in Service Workers; Referenced in Prerendering Revamped
Worker.postMessage(message, transfer) (WebIDL operation) §: Defined in HTML
BroadcastChannel.postMessage(message) (WebIDL operation) §: Defined in HTML; Referenced in Prerendering Revamped
FontData.postscriptName (WebIDL attribute) §: Defined in Local Font Access
QueryOptions.postscriptNames (WebIDL dictionary member) §: Defined in Local Font Access
Scheduler.postTask(callback, options) (WebIDL operation) §: Defined in Prioritized Task Scheduling
posture (concept) §: Defined in Device Posture API
potential destination (concept) §: Defined in Fetch; Referenced in HTML, Loading Signed Exchanges
potential event target (concept) §: Defined in DOM; Referenced in Payment Request API
potentially add a LargestContentfulPaint entry (concept) §: Defined in Largest Contentful Paint; Referenced in Soft Navigations
potentially playing (concept for media element ) §: Defined in HTML; Referenced in Encrypted Media Extensions, Media Session
potentially trustworthy origin (concept) §: Defined in Secure Contexts; Referenced in Private Aggregation API, Topics API, Attribution Reporting, Private Network Access, Private State Token API, Loading Signed Exchanges, A Well-Known URL for Changing Passwords, Federated Credential Management API, Mixed Content, Service Workers
potentially trustworthy URL (concept) §: Defined in Secure Contexts; Referenced in HTML, Prefetch, Speculation Rules, Credential Management 1, Federated Credential Management API, Mixed Content, Referrer Policy, Service Workers, Upgrade Insecure Requests
MLOpSupportLimits.pow (WebIDL dictionary member) §: Defined in Web Neural Network API
pow() (CSS function) §: Defined in CSS Values 4
MLGraphBuilder.pow(a, b, options) (WebIDL operation) §: Defined in Web Neural Network API
Math.pow(base, exponent) (WebIDL operation) §: Defined in ECMAScript
powderblue (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
powderblue (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
"powered" (value for SmartCardConnectionState WebIDL enumeration) §: Defined in Web Smart Card API
MediaCapabilitiesInfo.powerEfficient (WebIDL dictionary member) §: Defined in Media Capabilities; Referenced in WebCodecs
RTCInboundRtpStreamStats.powerEfficientDecoder (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCOutboundRtpStreamStats.powerEfficientEncoder (WebIDL dictionary member) §: Defined in WebRTC Statistics
powerful feature (concept) §: Defined in Permissions; Referenced in File System, WebXR Raw Camera Access, Notifications API, requestStorageAccessFor API, The Storage Access API, Storage, Web Bluetooth, Web Bluetooth Scanning, File System Access, Requesting Permissions, Private Network Access, WebUSB API, Ambient Light Sensor, Clipboard API and events, Device Orientation and Motion, Permissions Policy; Related terms: concept Default permission state, concept extra permission data, concept extra permission data constraints, concept extra permission data type, concept name, concept permission descriptor type, concept permission key comparison algorithm, concept permission key generation algorithm, concept permission key type, concept permission query algorithm, concept permission result type, concept permission revocation algorithm, concept permission state constraints
powerless color component (concept) §: Defined in CSS Color 4
MLContext.[[powerPreference]] (internal slot) §: Defined in Web Neural Network API
GPURequestAdapterOptions.powerPreference (WebIDL dictionary member) §: Defined in WebGPU
MLContextOptions.powerPreference (WebIDL dictionary member) §: Defined in Web Neural Network API
"pq" (value for TransferFunction WebIDL enumeration) §: Defined in Media Capabilities
"pq" (value for VideoTransferCharacteristics WebIDL enumeration) §: Defined in WebCodecs
"pranswer" (value for RTCSdpType WebIDL enumeration) §: Defined in WebRTC 1.0
pre (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML, Selectors 4; Related terms: markup attribute width
pre (CSS value for white-space ) §: Defined in CSS Text 3 , CSS Text 4 , CSS 2.2; Referenced in CSS Size Adjustment 1, CSS Snapshot 2022, CSS Snapshot 2023, CSS Paged Media 3
pre-base (concept) §: Defined in Internationalization Glossary
pre-insert (concept) §: Defined in DOM; Referenced in HTML
pre-line (CSS value for white-space ) §: Defined in CSS Text 3 , CSS Text 4 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, WebVTT: The Web Video Text Tracks Format
pre-multiplied (concept) §: Defined in CSS Transforms 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
pre-multiply (concept) §: Defined in CSS Transforms 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
pre-multiply (concept) §: Defined in Geometry Interfaces 1
pre-navigation check (concept for directive ) §: Defined in Content Security Policy 3; Referenced in Trusted Types
pre-remove (concept) §: Defined in DOM
pre-request check (concept for directive ) §: Defined in Content Security Policy 3; Referenced in Portals
pre-wrap (CSS value for white-space ) §: Defined in CSS Text 3 , CSS Text 4 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
preceding (concept for tree ) §: Defined in DOM; Referenced in execCommand
preceding element (concept) §: Defined in CSS 2.1
Precomposed (concept) §: Defined in Internationalization Glossary
preconnect (value for rel attribute of link element ) §: Defined in HTML; Referenced in Content Security Policy 3
<predefined-polar-params> (CSS type) §: Defined in CSS Color HDR 1
<predefined-rectangular> (CSS type) §: Defined in CSS Color HDR 1
<predefined-rectangular-params> (CSS type) §: Defined in CSS Color HDR 1
<predefined-rgb> (CSS type) §: Defined in CSS Color HDR 1 , CSS Color 4 , CSS Color 5
<predefined-rgb-params> (CSS type) §: Defined in CSS Color HDR 1 , CSS Color 4 , CSS Color 5
PredefinedColorSpace (WebIDL enumeration) §: Defined in HTML; Referenced in WebGL, WebCodecs, WebGPU; Related terms: value display-p3, value srgb; see also WebIDLPedia
Predicate (WebIDL callback) §: Defined in Observable
RdfTriple.predicate (WebIDL attribute) §: Defined in JSON-LD 1.1 Processing Algorithms and API
XRFrame.predictedDisplayTime (WebIDL attribute) §: Defined in WebXR Device API
PointerEventInit.predictedEvents (WebIDL dictionary member) §: Defined in Pointer Events
"preempted" (value for GamepadHapticsResult WebIDL enumeration) §: Defined in Gamepad
ImageDecoder.[[prefer animation]] (internal slot) §: Defined in WebCodecs
prefer_related_applications (concept for manifest ) §: Defined in Manifest Incubations
"prefer-hardware" (value for HardwareAcceleration WebIDL enumeration) §: Defined in WebCodecs
"prefer-software" (value for HardwareAcceleration WebIDL enumeration) §: Defined in WebCodecs
ImageDecoderInit.preferAnimation (WebIDL dictionary member) §: Defined in WebCodecs
MediaStreamConstraints.preferCurrentTab (WebIDL dictionary member) §: Defined in preferCurrentTab
PreferenceManager (WebIDL interface) §: Defined in Web Preferences API , Media Queries 5; Related terms: undefinedcolorScheme, undefinedcontrast, undefinedreducedData, undefinedreducedMotion, undefinedreducedTransparency; see also WebIDLPedia
PreferenceObject (WebIDL interface) §: Defined in Web Preferences API , Media Queries 5; Related terms: undefinedonchange, undefinedoverride, undefinedvalidValues, undefinedvalue, undefinedclearOverride(), undefinedrequestOverride(value); see also WebIDLPedia
Navigator.preferences (WebIDL attribute) §
Navigator.preferences (WebIDL attribute) §: Defined in Web Preferences API , Media Queries 5
DocumentPictureInPictureOptions.preferInitialWindowPlacement (WebIDL dictionary member) §: Defined in Document Picture-in-Picture
"preferred" (value for ResidentKeyRequirement WebIDL enumeration) §: Defined in Web Authentication; Referenced in Secure Payment Confirmation
"preferred" (value for UserVerificationRequirement WebIDL enumeration) §: Defined in Web Authentication
"preferred" (value for LargeBlobSupport WebIDL enumeration) §: Defined in Web Authentication
preferred aspect ratio (concept) §: Defined in CSS Sizing 3 , CSS Sizing 4; Referenced in CSS Containment 1, CSS Containment 2, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Images 3
preferred color scheme (concept) §: Defined in CSS Color Adjustment 1
preferred CSS style sheet set name (concept) §: Defined in CSSOM
preferred order (concept) §: Defined in CSSOM
preferred resolution (concept) §: Defined in CSS Images 4
preferred size (concept) §: Defined in CSS Sizing 3; Referenced in CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Positioned Layout 3, CSS Sizing 4
preferred size property (concept) §: Defined in CSS Sizing 3; Referenced in CSS Writing Modes 3
RTCRtpTransceiver.[[PreferredCodecs]] (internal slot) §: Defined in WebRTC 1.0
MLOpSupportLimits.preferredInputLayout (WebIDL dictionary member) §: Defined in Web Neural Network API
SmartCardConnectOptions.preferredProtocols (WebIDL dictionary member) §: Defined in Web Smart Card API
XRSession.preferredReflectionFormat (WebIDL attribute) §: Defined in WebXR Lighting Estimation API 1
prefers-color-scheme (CSS descriptor for @media ) §: Defined in Media Queries 5; Referenced in CSS Color Adjustment 1; Related terms: CSS value dark, CSS value light
prefers-contrast (CSS descriptor for @media ) §: Defined in Media Queries 5; Related terms: CSS value custom, CSS value less, CSS value more, CSS value no-preference
prefers-reduced-data (CSS descriptor for @media ) §: Defined in Media Queries 5; Related terms: CSS value no-preference, CSS value reduce
prefers-reduced-motion (CSS descriptor for @media ) §: Defined in Media Queries 5; Related terms: CSS value no-preference, CSS value reduce
prefers-reduced-transparency (CSS descriptor for @media ) §: Defined in Media Queries 5; Related terms: CSS value no-preference, CSS value reduce
prefetch (value for rel attribute of link element ) §: Defined in HTML; Referenced in Loading Signed Exchanges, Content Security Policy 3
prefetch (concept) §: Defined in Prefetch
prefetch IP anonymization policy (concept) §: Defined in Prefetch
prefetch record (concept) §: Defined in Prefetch; Related terms: concept anonymization policy, concept cancel and discard, concept complete, concept expiry time, concept fetch controller, concept had conflicting credentials, concept is expected to match a URL, concept isolated partition key, concept label, concept matches a URL, concept No-Vary-Search hint, concept redirect chain, concept referrer policy, concept response, concept sandboxing flag set, concept source partition key, concept start time, concept state, concept URL
prefetch records (concept for Document ) §: Defined in Prefetch
::prefix (CSS selector for ::first-letter ) §: Defined in CSS Pseudo-Elements 4
prefix (concept for byte sequence ) §: Defined in Infra
prefix (CSS descriptor for @counter-style ) §: Defined in CSS Counter Styles 3; Referenced in CSS Lists 3
Attr.prefix (WebIDL attribute) §: Defined in DOM
CSSCounterStyleRule.prefix (WebIDL attribute) §: Defined in CSS Counter Styles 3
CSSNamespaceRule.prefix (WebIDL attribute) §: Defined in CSSOM
Element.prefix (WebIDL attribute) §: Defined in DOM
preload (value for rel attribute of link element ) §: Defined in HTML; Referenced in The <model> element, Loading Signed Exchanges
preload (markup attribute for audio, video element ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0; Related terms: value auto, value auto, value metadata, value metadata, value none, value none
HTMLMediaElement.preload (WebIDL attribute) §: Defined in HTML; Referenced in Media Capture and Streams, Open Screen Protocol
preloadable HSTS host (concept) §: Defined in Upgrade Insecure Requests
preloaded response candidate (concept for fetch params ) §: Defined in Fetch
FetchEvent.preloadResponse (WebIDL attribute) §: Defined in Service Workers; Referenced in Loading Signed Exchanges
FetchEventInit.preloadResponse (WebIDL dictionary member) §: Defined in Service Workers
MLOpSupportLimits.prelu (WebIDL dictionary member) §: Defined in Web Neural Network API
MLGraphBuilder.prelu(input, slope, options) (WebIDL operation) §: Defined in Web Neural Network API
CSSParserAtRule.prelude (WebIDL attribute) §: Defined in CSS Parser API
CSSParserQualifiedRule.prelude (WebIDL attribute) §: Defined in CSS Parser API
"premultiplied" (value for GPUCanvasAlphaMode WebIDL enumeration) §: Defined in WebGPU
premultiplied color values (concept) §: Defined in CSS Color 4
GPUCopyExternalImageDestInfo.premultipliedAlpha (WebIDL dictionary member) §: Defined in WebGPU
"premultiply" (value for PremultiplyAlpha WebIDL enumeration) §: Defined in HTML
PremultiplyAlpha (WebIDL enumeration) §: Defined in HTML; Related terms: value default, value none, value premultiply; see also WebIDLPedia
ImageBitmapOptions.premultiplyAlpha (WebIDL dictionary member) §: Defined in HTML; Referenced in WebGPU
DOMMatrix.preMultiplySelf(other) (WebIDL operation) §: Defined in Geometry Interfaces 1
Prepare the script text (algorithm) §: Defined in Trusted Types
prepare to clear origin’s data (algorithm) §: Defined in Clear Site Data
prepare to run a callback (concept) §: Defined in HTML; Referenced in WebAssembly JavaScript Interface: Content Security Policy, WebAssembly JavaScript Interface: ESM Integration, WebAssembly JavaScript Interface: Exception Handling, WebAssembly JavaScript Interface: Promise Integration, WebAssembly JavaScript Interface: JS String Builtins, WebAssembly JavaScript Interface: Type Reflection, WebAssembly JavaScript Interface: Threading, Web IDL, WebAssembly JavaScript Interface, Web Audio API, Web Audio API 1.1, WebDriver
prepare to run script (concept) §: Defined in HTML; Referenced in WebDriver BiDi, WebAssembly JavaScript Interface: Content Security Policy, WebAssembly JavaScript Interface: ESM Integration, WebAssembly JavaScript Interface: Exception Handling, WebAssembly JavaScript Interface: Promise Integration, WebAssembly JavaScript Interface: JS String Builtins, WebAssembly JavaScript Interface: Type Reflection, WebAssembly JavaScript Interface: Threading, Web IDL, WebAssembly JavaScript Interface, Web Audio API, Web Audio API 1.1, WebDriver
prepared to evaluate ECMAScript code (concept for ECMAScript ) §: Defined in ECMAScript
PrepareForOrdinaryCall (algorithm) §: Defined in ECMAScript
PrepareForTailCall (algorithm) §: Defined in ECMAScript
prepend (concept for list ) §: Defined in Infra; Referenced in Console, DOM, Encoding, HTML, Fenced Frame, CSS Typed OM 1, EPUB 3.3, Web Locks API, Web Neural Network API
prepend (concept for set ) §: Defined in Infra
GroupEffect.prepend(...effects) (WebIDL operation) §: Defined in Web Animations 2
ParentNode.prepend(...nodes) (WebIDL operation) §: Defined in DOM
"prerender" (value for NavigationTimingType WebIDL enumeration) §: Defined in Navigation Timing 2
prerender record (concept) §: Defined in Prerendering Revamped; Related terms: concept is expected to match a URL, concept matches a URL, concept No-Vary-Search hint, concept prerendering traversable, concept start time, concept starting URL
prerender records (concept for Document ) §: Defined in Prerendering Revamped
Document.prerendering (WebIDL attribute) §: Defined in Prerendering Revamped
prerendering traversable (concept for prerender record ) §: Defined in Prerendering Revamped
prerenderingchange (event for Document ) §: Defined in Prerendering Revamped
prescan a byte stream to determine its encoding (concept) §: Defined in HTML; Referenced in XMLHttpRequest; Related terms: concept end condition
"present" (value for SmartCardConnectionState WebIDL enumeration) §: Defined in Web Smart Card API
"present" (value for TokenBindingStatus WebIDL enumeration) §: Defined in Web Authentication
SmartCardReaderStateFlagsIn.present (WebIDL dictionary member) §: Defined in Web Smart Card API
SmartCardReaderStateFlagsOut.present (WebIDL dictionary member) §: Defined in Web Smart Card API
Presentation (WebIDL interface) §: Defined in Presentation API; Related terms: Presentation.defaultRequest, Presentation.receiver; see also WebIDLPedia
presentation (concept) §: Defined in Verifiable Credentials Data Model v2.0: Data derived from one or more verifiable credentials issued by one or more issuers that is shared with a specific verifier.
Navigator.presentation (WebIDL attribute) §: Defined in Presentation API
presentation attributes (concept) §: Defined in SVG 2; Referenced in CSS Display 4, SVG Animations 2, CSS Transforms 1
Presentation Timestamp (concept) §: Defined in Media Source Extensions™
presentational hint (concept) §: Defined in HTML; Referenced in MathML Core, Referrer Policy, WebVTT: The Web Video Text Tracks Format
DelegatedInkTrailPresenter.presentationArea (WebIDL attribute) §: Defined in Ink API
InkPresenterParam.presentationArea (WebIDL dictionary member) §: Defined in Ink API
PresentationAvailability (WebIDL interface) §: Defined in Presentation API; Related terms: PresentationAvailability.onchange, PresentationAvailability.value; see also WebIDLPedia
PresentationConnection (WebIDL interface) §: Defined in Presentation API; Referenced in Open Screen Protocol; Related terms: PresentationConnection.binaryType, PresentationConnection.id, PresentationConnection.onclose, PresentationConnection.onconnect, PresentationConnection.onmessage, PresentationConnection.onterminate, PresentationConnection.state, PresentationConnection.url, PresentationConnection.close(), PresentationConnection.send(), PresentationConnection.terminate(); see also WebIDLPedia
PresentationConnectionAvailableEvent (WebIDL interface) §: Defined in Presentation API; Related terms: PresentationConnectionAvailableEvent.connection, WebIDL constructor constructor(); see also WebIDLPedia
PresentationConnectionAvailableEventInit (WebIDL dictionary) §: Defined in Presentation API; Related terms: PresentationConnectionAvailableEventInit.connection; see also WebIDLPedia
PresentationConnectionCloseEvent (WebIDL interface) §: Defined in Presentation API; Related terms: PresentationConnectionCloseEvent.message, PresentationConnectionCloseEvent.reason, WebIDL constructor constructor(); see also WebIDLPedia
PresentationConnectionCloseEventInit (WebIDL dictionary) §: Defined in Presentation API; Related terms: PresentationConnectionCloseEventInit.message, PresentationConnectionCloseEventInit.reason; see also WebIDLPedia
PresentationConnectionCloseReason (WebIDL enumeration) §: Defined in Presentation API; Related terms: value closed, value error, value wentaway; see also WebIDLPedia
PresentationConnectionList (WebIDL interface) §: Defined in Presentation API; Related terms: PresentationConnectionList.connections, PresentationConnectionList.onconnectionavailable; see also WebIDLPedia
PresentationConnectionState (WebIDL enumeration) §: Defined in Presentation API; Related terms: value closed, value connected, value connecting, value terminated; see also WebIDLPedia
PresentationReceiver (WebIDL interface) §: Defined in Presentation API; Related terms: PresentationReceiver.connectionList; see also WebIDLPedia
PresentationRequest (WebIDL interface) §: Defined in Presentation API; Related terms: PresentationRequest.onconnectionavailable, new constructor!overload-1(), WebIDL constructor constructor(), PresentationRequest.getAvailability(), PresentationRequest.reconnect(), PresentationRequest.start(); see also WebIDLPedia
PresentationStyle (WebIDL enumeration) §: Defined in Clipboard API and events; Related terms: value attachment, value inline, value unspecified; see also WebIDLPedia
ClipboardItem.presentationStyle (WebIDL attribute) §: Defined in Clipboard API and events
ClipboardItemOptions.presentationStyle (WebIDL dictionary member) §: Defined in Clipboard API and events
PaintTimingMixin.presentationTime (WebIDL attribute) §: Defined in Paint Timing
VideoFrameCallbackMetadata.presentationTime (WebIDL dictionary member) §: Defined in HTMLVideoElement.requestVideoFrameCallback()
VideoFrameCallbackMetadata.presentedFrames (WebIDL dictionary member) §: Defined in HTMLVideoElement.requestVideoFrameCallback()
"preserve" (value for SelectionMode WebIDL enumeration) §: Defined in HTML
preserve (CSS value for voice-family ) §: Defined in CSS Speech 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
preserve (CSS value for white-space-collapse ) §: Defined in CSS Text 4
preserve-breaks (CSS value for white-space-collapse ) §: Defined in CSS Text 4
preserve-parent-color (CSS value for forced-color-adjust ) §: Defined in CSS Color Adjustment 1
preserve-spaces (CSS value for white-space-collapse ) §: Defined in CSS Text 4
preserveAlpha (markup attribute for feConvolveMatrix ) §: Defined in Filter Effects 1
SVGFEConvolveMatrixElement.preserveAlpha (WebIDL attribute) §: Defined in Filter Effects 1
preserveAspectRatio (markup attribute for feImage ) §: Defined in Filter Effects 1
preserveAspectRatio (markup attribute for svg ) §: Defined in SVG 2
SVGFEImageElement.preserveAspectRatio (WebIDL attribute) §: Defined in Filter Effects 1
SVGFitToViewBox.preserveAspectRatio (WebIDL attribute) §: Defined in SVG 2
SVGImageElement.preserveAspectRatio (WebIDL attribute) §: Defined in SVG 2
preserved tokens (concept for CSS ) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
preserved white space (concept) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Inline Layout 3
HTMLMediaElement.preservesPitch (WebIDL attribute) §: Defined in HTML
GamepadButton.pressed (WebIDL attribute) §: Defined in Gamepad
PointerEvent.pressure (WebIDL attribute) §: Defined in Pointer Events
PointerEventInit.pressure (WebIDL dictionary member) §: Defined in Pointer Events
PressureObserver (WebIDL interface) §: Defined in Compute Pressure 1; Related terms: PressureObserver.knownSources, WebIDL constructor constructor(), PressureObserver.disconnect(), PressureObserver.observe(), PressureObserver.takeRecords(), PressureObserver.unobserve(); see also WebIDLPedia
PressureObserverOptions (WebIDL dictionary) §: Defined in Compute Pressure 1; Related terms: PressureObserverOptions.sampleInterval; see also WebIDLPedia
PressureRecord (WebIDL interface) §: Defined in Compute Pressure 1; Related terms: PressureRecord.source, PressureRecord.state, PressureRecord.time, PressureRecord.toJSON(); see also WebIDLPedia
PressureSource (WebIDL enumeration) §: Defined in Compute Pressure 1; Related terms: value cpu; see also WebIDLPedia
PressureState (WebIDL enumeration) §: Defined in Compute Pressure 1; Related terms: value critical, value fair, value nominal, value serious; see also WebIDLPedia
PressureUpdateCallback (WebIDL callback) §: Defined in Compute Pressure 1
pretty (CSS value for text-wrap-style ) §: Defined in CSS Text 4
prev (CSS value for ::scroll-button(), <scroll-button-direction> type ) §: Defined in CSS Overflow 5
prev (value for rel attribute of a, rel attribute of area element, rel attribute of form element, rel attribute of link element ) §: Defined in HTML
"prev" (value for IDBCursorDirection WebIDL enumeration) §: Defined in Indexed DB 3.0
GPUBindGroupEntry.[[prevalidatedSize]] (internal slot) §: Defined in WebGPU
prevent no-cache cache-control header modification flag (concept for request ) §: Defined in Fetch
Prevent Silent Access (algorithm) §: Defined in Credential Management 1
preventAbort (concept for pipe of ReadableStream interface ) §: Defined in Streams
preventAbort (concept for pipe through of ReadableStream interface ) §: Defined in Streams
StreamPipeOptions.preventAbort (WebIDL dictionary member) §: Defined in Streams
preventCancel (concept for pipe of ReadableStream interface ) §: Defined in Streams
preventCancel (concept for pipe through of ReadableStream interface ) §: Defined in Streams
ReadableStreamIteratorOptions.preventCancel (WebIDL dictionary member) §: Defined in Streams
StreamPipeOptions.preventCancel (WebIDL dictionary member) §: Defined in Streams
preventClose (concept for pipe of ReadableStream interface ) §: Defined in Streams
preventClose (concept for pipe through of ReadableStream interface ) §: Defined in Streams
StreamPipeOptions.preventClose (WebIDL dictionary member) §: Defined in Streams
Event.preventDefault() (WebIDL operation) §: Defined in DOM; Referenced in HTML, Manifest Incubations, Clipboard API and events, CSS Spatial Navigation 1, CSS Overscroll Behavior 1, Indexed DB 3.0, UI Events, WebGPU, WebXR DOM Overlays
Object.preventExtensions(O) (WebIDL operation) §: Defined in ECMAScript
Reflect.preventExtensions(target) (WebIDL operation) §: Defined in ECMAScript
FocusOptions.preventScroll (WebIDL dictionary member) §: Defined in HTML
CredentialsContainer.preventSilentAccess() (WebIDL operation) §: Defined in Credential Management 1; Referenced in Web Authentication
previous (value for enterkeyhint attribute of html-global ) §: Defined in HTML
"previous" (value for CaptureAction WebIDL enumeration) §: Defined in The Capture-Handle Actions Mechanism
previous document unload timing (concept for Document ) §: Defined in HTML
previous frame starting point (concept) §: Defined in Layout Instability
previous frame transform-indifferent starting point (concept) §: Defined in Layout Instability
previous frame visual representation (concept) §: Defined in Layout Instability
previous sibling (concept for tree ) §: Defined in DOM; Referenced in HTML, ContentEditable
NonDocumentTypeChildNode.previousElementSibling (WebIDL attribute) §: Defined in DOM
IntersectionObserverRegistration.previousIsIntersecting (WebIDL attribute) §: Defined in Intersection Observer
IntersectionObserverRegistration.previousIsVisible (WebIDL attribute) §: Defined in Intersection Observer
NodeIterator.previousNode() (WebIDL operation) §: Defined in DOM
TreeWalker.previousNode() (WebIDL operation) §: Defined in DOM
TaskPriorityChangeEvent.previousPriority (WebIDL attribute) §: Defined in Prioritized Task Scheduling
TaskPriorityChangeEventInit.previousPriority (WebIDL dictionary member) §: Defined in Prioritized Task Scheduling
LayoutShiftAttribution.previousRect (WebIDL attribute) §: Defined in Layout Instability
AnimationEffect.previousSibling (WebIDL attribute) §: Defined in Web Animations 2
MutationRecord.previousSibling (WebIDL attribute) §: Defined in DOM
Node.previousSibling (WebIDL attribute) §: Defined in DOM; Referenced in execCommand
TreeWalker.previousSibling() (WebIDL operation) §: Defined in DOM
"previousslide" (value for MediaSessionAction WebIDL enumeration) §: Defined in Media Session
IntersectionObserverRegistration.previousThresholdIndex (WebIDL attribute) §: Defined in Intersection Observer
"previoustrack" (value for MediaSessionAction WebIDL enumeration) §: Defined in Media Session
PreviousWin (WebIDL type alias) §: Defined in Protected Audience; see also WebIDLPedia
PreviousWinElement (WebIDL type alias) §: Defined in Protected Audience; see also WebIDLPedia
"prevunique" (value for IDBCursorDirection WebIDL enumeration) §: Defined in Indexed DB 3.0
BiddingBrowserSignals.prevWinsMs (WebIDL dictionary member) §: Defined in Protected Audience
StorageInterestGroup.prevWinsMs (WebIDL dictionary member) §: Defined in Protected Audience
AuthenticationExtensionsClientInputs.prf (WebIDL dictionary member) §: Defined in Web Authentication
AuthenticationExtensionsClientOutputs.prf (WebIDL dictionary member) §: Defined in Web Authentication
"prflx" (value for RTCIceCandidateType WebIDL enumeration) §: Defined in WebRTC 1.0
ItemDetails.price (WebIDL dictionary member) §: Defined in Digital Goods API
VideoColorSpace.[[primaries]] (internal slot) §
VideoColorSpace.[[primaries]] (internal slot) §: Defined in WebCodecs , WebCodecs
VideoColorSpaceInit.primaries (WebIDL dictionary member) §: Defined in WebCodecs
primary filter primitive tree (concept) §: Defined in Filter Effects 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
primary interface (concept) §: Defined in Web IDL; Referenced in DOM, HTML
primary time zone identifier (concept for ECMAScript ) §: Defined in ECMAScript
IDBCursor.primaryKey (WebIDL attribute) §: Defined in Indexed DB 3.0
XRLightEstimate.primaryLightDirection (WebIDL attribute) §: Defined in WebXR Lighting Estimation API 1
XRLightEstimate.primaryLightIntensity (WebIDL attribute) §: Defined in WebXR Lighting Estimation API 1
GPURenderPipelineDescriptor.primitive (WebIDL dictionary member) §: Defined in WebGPU
primitive appearance (concept) §: Defined in CSS User Interface 4
primitive types (concept) §: Defined in Web IDL
primitiveUnits (markup attribute for filter ) §: Defined in Filter Effects 1
SVGFilterElement.primitiveUnits (WebIDL attribute) §: Defined in Filter Effects 1; Related terms: value objectBoundingBox, value userSpaceOnUse
principal block-level box (concept) §: Defined in CSS 2.1; Referenced in CSS Regions 1
principal box (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Borders and Box Decorations 4, CSS Positioned Layout 4, Layout Instability, CSS Snapshot 2022, CSS Snapshot 2023, CSS Anchor Positioning, CSS Backgrounds 3, CSS Fragmentation 4, CSS Conditional 5, CSS Containment 1, CSS Containment 2, CSS Lists 3, CSS Spatial Navigation 1, CSS Sizing 4, CSS View Transitions 1, CSSOM View, Scroll-driven Animations
principal writing mode (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Fragmentation 3, CSS Fragmentation 4, CSS Overflow 3, CSS Paged Media 3, CSS Text 3
print (CSS value for @media ) §: Defined in CSS 2.2 , Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
print-color-adjust (CSS property) §: Defined in CSS Color Adjustment 1; Related terms: CSS value economy, CSS value exact
Window.print() (WebIDL operation) §: Defined in HTML; Referenced in Prerendering Revamped
printable area (concept) §: Defined in CSS Paged Media 3
Printer (algorithm) §: Defined in Console; Referenced in WebDriver BiDi
priority (concept for request ) §: Defined in Fetch; Referenced in HTML, Attribution Reporting, Shared Storage API
AuctionAdInterestGroup.priority (WebIDL dictionary member) §: Defined in Protected Audience
Highlight.priority (WebIDL attribute) §: Defined in CSS Custom Highlight API 1
priority (WebIDL attribute for network reporting endpoint ) §: Defined in Network Reporting API
RequestInit.priority (WebIDL dictionary member) §: Defined in Fetch
RTCDataChannel.priority (WebIDL attribute) §: Defined in WebRTC Priority Control API
RTCDataChannelInit.priority (WebIDL dictionary member) §: Defined in WebRTC Priority Control API
RTCIceCandidate.priority (WebIDL attribute) §: Defined in WebRTC 1.0
RTCIceCandidateStats.priority (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCRtpEncodingParameters.priority (WebIDL dictionary member) §: Defined in WebRTC Priority Control API
SchedulerPostTaskOptions.priority (WebIDL dictionary member) §: Defined in Prioritized Task Scheduling
TaskControllerInit.priority (WebIDL dictionary member) §: Defined in Prioritized Task Scheduling
TaskSignal.priority (WebIDL attribute) §: Defined in Prioritized Task Scheduling
TaskSignalAnyInit.priority (WebIDL dictionary member) §: Defined in Prioritized Task Scheduling
prioritychange (event for TaskSignal ) §: Defined in Prioritized Task Scheduling
AuctionAdInterestGroup.prioritySignalsOverrides (WebIDL dictionary member) §: Defined in Protected Audience
GenerateBidInterestGroup.priorityVector (WebIDL dictionary member) §: Defined in Protected Audience
RealTimeContribution.priorityWeight (WebIDL dictionary member) §: Defined in Protected Audience
IdentityProviderClientMetadata.privacy_policy_url (WebIDL dictionary member) §: Defined in Federated Credential Management API
privacy-policy (value for rel attribute of a, rel attribute of area element, rel attribute of link element ) §: Defined in HTML
"private" (value for IPAddressSpace WebIDL enumeration) §: Defined in Private Network Access
private (concept for IP address space ) §: Defined in Private Network Access; Referenced in Direct Sockets API
"private" (value for KeyType WebIDL enumeration) §: Defined in Web Cryptography API
Private Name (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management
Private Network Access check (concept) §: Defined in Private Network Access
private network request (concept) §: Defined in Private Network Access
"private-network-access" (permission name) §: Defined in Private Network Access
Private-Network-Access-ID: (HTTP header) §: Defined in Private Network Access
Private-Network-Access-Name: (HTTP header) §: Defined in Private Network Access
PrivateAggregation (WebIDL interface) §: Defined in Private Aggregation API; Referenced in Shared Storage API, Protected Audience; Related terms: PrivateAggregation.contributeToHistogram(contribution), PrivateAggregation.contributeToHistogramOnEvent(event, contribution), PrivateAggregation.enableDebugMode(options); see also WebIDLPedia
InterestGroupScriptRunnerGlobalScope.privateAggregation (WebIDL attribute) §: Defined in Protected Audience
SharedStorageWorkletGlobalScope.privateAggregation (WebIDL attribute) §: Defined in Shared Storage API
AuctionAdConfig.privateAggregationConfig (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAdInterestGroup.privateAggregationConfig (WebIDL dictionary member) §: Defined in Protected Audience
SharedStorageRunOperationMethodOptions.privateAggregationConfig (WebIDL dictionary member) §: Defined in Shared Storage API
PrivateElementFind (algorithm) §: Defined in ECMAScript
PrivateElements (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management
PrivateEnvironment (concept for ECMAScript Code Execution Contexts ) §: Defined in ECMAScript
PrivateEnvironment Record (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Explicit Resource Management
PrivateFieldAdd (algorithm) §: Defined in ECMAScript
PrivateGet (algorithm) §: Defined in ECMAScript
CryptoKeyPair.privateKey (WebIDL dictionary member) §: Defined in Web Cryptography API
PrivateMethodOrAccessorAdd (algorithm) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management
PrivateNetworkAccessPermissionDescriptor (WebIDL dictionary) §: Defined in Private Network Access; Related terms: PrivateNetworkAccessPermissionDescriptor.id; see also WebIDLPedia
PrivateSet (algorithm) §: Defined in ECMAScript
PrivateToken (WebIDL dictionary) §: Defined in Private State Token API; Related terms: PrivateToken.issuers, PrivateToken.operation, PrivateToken.refreshPolicy, PrivateToken.version; see also WebIDLPedia
HTMLIFrameElement.privateToken (WebIDL attribute) §: Defined in Private State Token API
RequestInit.privateToken (WebIDL dictionary member) §: Defined in Private State Token API
privateToken (markup attribute for iframe ) §: Defined in Private State Token API
privileged no-CORS request-header name (concept) §: Defined in Fetch
"probably" (value for CanPlayTypeResult WebIDL enumeration) §: Defined in HTML
XRLightProbe.probeSpace (WebIDL attribute) §: Defined in WebXR Lighting Estimation API 1
process a MiniApp package (concept) §: Defined in MiniApp Packaging
process an attribution eligible response (concept) §: Defined in Attribution Reporting; Referenced in Fenced Frame
process an image resource from JSON (concept) §: Defined in Image Resource
process an ImageResource from an API (concept) §: Defined in Image Resource
process color attachments (algorithm) §: Defined in WebGPU
process contributions for a batching scope (concept) §: Defined in Private Aggregation API; Referenced in Shared Storage API, Protected Audience
process depth stencil (algorithm) §: Defined in WebGPU
process fragment (algorithm) §: Defined in WebGPU
Process permissions policy attributes (algorithm) §: Defined in Permissions Policy; Referenced in Fenced Frame
process remote tracks (algorithm) §: Defined in WebRTC 1.0
Process response policy (algorithm) §: Defined in Permissions Policy
process the addition of a remote track (algorithm) §: Defined in WebRTC 1.0
process the next manual redirect (concept for fetch controller ) §: Defined in Fetch; Referenced in HTML, Prefetch
process the removal of a remote track (algorithm) §: Defined in WebRTC 1.0
process top layer removals (concept) §: Defined in CSS Positioned Layout 4; Referenced in HTML
Process value with a default policy (algorithm) §: Defined in Trusted Types
process vertices (algorithm) §: Defined in WebGPU
processCustomFetchResponse (concept for fetching scripts ) §: Defined in HTML
processEarlyHintsResponse (concept for fetch ) §: Defined in Fetch; Referenced in HTML, Prefetch
processed manifest (concept for Document ) §: Defined in Web Application Manifest; Referenced in Payment Method Manifest
processing a manifest (concept) §: Defined in Web Application Manifest; Referenced in HTML, Payment Method Manifest
processing extension-point (concept for manifest ) §: Defined in Web Application Manifest
"processing mode conflict" (value for JsonLdErrorCode WebIDL enumeration) §: Defined in JSON-LD 1.1 Processing Algorithms and API
processing modes (concept) §: Defined in SVG Integration
Node.PROCESSING_INSTRUCTION_NODE (WebIDL constant) §: Defined in DOM
VideoFrameCallbackMetadata.processingDuration (WebIDL dictionary member) §: Defined in HTMLVideoElement.requestVideoFrameCallback()
PerformanceEventTiming.processingEnd (WebIDL attribute) §: Defined in Event Timing API
ProcessingInstruction (WebIDL interface) §: Defined in DOM; Referenced in CSSOM, WebVTT: The Web Video Text Tracks Format; Related terms: concept substring data, concept target, ProcessingInstruction.target; see also WebIDLPedia
JsonLdOptions.processingMode (WebIDL dictionary member) §: Defined in JSON-LD 1.1 Processing Algorithms and API
PerformanceEventTiming.processingStart (WebIDL attribute) §: Defined in Event Timing API
processorerror (event for AudioWorkletNode ) §: Defined in Web Audio API , Web Audio API 1.1
AudioWorkletNodeOptions.processorOptions (WebIDL dictionary member) §
AudioWorkletNodeOptions.processorOptions (WebIDL dictionary member) §: Defined in Web Audio API , Web Audio API 1.1
processRequestBodyChunkLength (concept for fetch ) §: Defined in Fetch; Referenced in XMLHttpRequest
processRequestEndOfBody (concept for fetch ) §: Defined in Fetch; Referenced in XMLHttpRequest
processResponse (concept for fetch ) §: Defined in Fetch; Referenced in HTML, Private Aggregation API, WebSockets, Attribution Reporting, Fenced Frame, Prefetch, Protected Audience, Payment Method Manifest, Service Workers, XMLHttpRequest
processResponseConsumeBody (concept for fetch ) §: Defined in Fetch; Referenced in HTML, Source Map, Speculation Rules, Shared Storage API, Protected Audience, CSS Values 4, Federated Credential Management API, Payment Method Manifest, XMLHttpRequest
processResponseEndOfBody (concept for fetch ) §: Defined in Fetch; Referenced in HTML, Service Workers
JsonLdOptions.produceGeneralizedRdf (WebIDL dictionary member) §: Defined in JSON-LD 1.1 Processing Algorithms and API
Producer (concept) §: Defined in Internationalization Glossary
"product" (value for ItemType WebIDL enumeration) §: Defined in Digital Goods API
"product" (value for CSSMathOperator WebIDL enumeration) §: Defined in CSS Typed OM 1
NavigatorID.product (WebIDL attribute) §: Defined in HTML
product of two unit maps (concept) §: Defined in CSS Typed OM 1
AllowedUSBDevice.productId (WebIDL dictionary member) §: Defined in WebUSB API
HIDDevice.productId (WebIDL attribute) §: Defined in WebHID API
HIDDeviceFilter.productId (WebIDL dictionary member) §: Defined in WebHID API
USBDevice.productId (WebIDL attribute) §: Defined in WebUSB API
USBDeviceFilter.productId (WebIDL dictionary member) §: Defined in WebUSB API
HIDDevice.productName (WebIDL attribute) §: Defined in WebHID API
USBDevice.productName (WebIDL attribute) §: Defined in WebUSB API
NavigatorID.productSub (WebIDL attribute) §: Defined in HTML
profile (markup attribute for head ) §: Defined in HTML
HTMLHeadElement.profile (WebIDL attribute) §: Defined in HTML
LoadDocumentOptions.profile (WebIDL dictionary member) §: Defined in JSON-LD 1.1 Processing Algorithms and API
RemoteDocument.profile (WebIDL attribute) §: Defined in JSON-LD 1.1 Processing Algorithms and API
XRTransientInputHitTestOptionsInit.profile (WebIDL dictionary member) §: Defined in WebXR Hit Test
Profiler (WebIDL interface) §: Defined in JS Self-Profiling API; Related terms: Profiler.sampleInterval, Profiler.stopped, WebIDL constructor constructor(), Profiler.stop(); see also WebIDLPedia
ProfilerFrame (WebIDL dictionary) §: Defined in JS Self-Profiling API; Related terms: ProfilerFrame.column, ProfilerFrame.line, ProfilerFrame.name, ProfilerFrame.resourceId; see also WebIDLPedia
ProfilerInitOptions (WebIDL dictionary) §: Defined in JS Self-Profiling API; Related terms: ProfilerInitOptions.maxBufferSize, ProfilerInitOptions.sampleInterval; see also WebIDLPedia
ProfilerResource (WebIDL type alias) §: Defined in JS Self-Profiling API; see also WebIDLPedia
ProfilerSample (WebIDL dictionary) §: Defined in JS Self-Profiling API; Related terms: ProfilerSample.stackId, ProfilerSample.timestamp; see also WebIDLPedia
ProfilerStack (WebIDL dictionary) §: Defined in JS Self-Profiling API; Related terms: ProfilerStack.frameId, ProfilerStack.parentId; see also WebIDLPedia
ProfilerTrace (WebIDL dictionary) §: Defined in JS Self-Profiling API; Related terms: ProfilerTrace.frames, ProfilerTrace.resources, ProfilerTrace.samples, ProfilerTrace.stacks; see also WebIDLPedia
XRInputSource.profiles (WebIDL attribute) §: Defined in WebXR Device API; Referenced in WebXR Hand Input 1, WebXR Hit Test
program error (concept) §: Defined in WebGPU Shading Language; Referenced in WebGPU
<progress> (CSS type) §: Defined in CSS Values 5
progress (event for HTMLMediaElement ) §: Defined in HTML
progress (markup element) §: Defined in HTML; Referenced in CSS Display 4, CSS Display 3, CSS Sizing 3, HTML Accessibility API Mappings 1.0, ARIA in HTML, XMLHttpRequest; Related terms: markup attribute max, markup attribute value
progress (event for BackgroundFetchRegistration ) §: Defined in Background Fetch
progress (CSS value for cursor ) §: Defined in CSS User Interface 3 , CSS User Interface 4 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
progress (event for FileReader ) §: Defined in File API
progress (event for XMLHttpRequestEventTarget ) §: Defined in XMLHttpRequest
ComputedEffectTiming.progress (WebIDL dictionary member) §: Defined in Web Animations
progress-bar (CSS value for appearance ) §: Defined in CSS User Interface 4
<progress()> (CSS type) §: Defined in CSS Values 5
progress() (CSS function) §: Defined in CSS Values 5
ProgressEvent (WebIDL interface) §: Defined in XMLHttpRequest; Referenced in Writing Assistance APIs, File API; Related terms: ProgressEvent.lengthComputable, ProgressEvent.loaded, ProgressEvent.total, new ProgressEvent(type, eventInitDict); see also WebIDLPedia
new ProgressEvent(type, eventInitDict) (WebIDL constructor) §: Defined in XMLHttpRequest
ProgressEventInit (WebIDL dictionary) §: Defined in XMLHttpRequest; Related terms: ProgressEventInit.lengthComputable, ProgressEventInit.loaded, ProgressEventInit.total; see also WebIDLPedia
progressive (CSS value for scan descriptor of @media @rule ) §: Defined in Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSSOM
ImageDecoder.[[progressive frame generations]] (internal slot) §: Defined in WebCodecs
projection (CSS value for @media ) §: Defined in CSS 2.2 , Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
XRView.projectionMatrix (WebIDL attribute) §: Defined in WebXR Device API
PromiseRejectionEvent.promise (WebIDL attribute) §: Defined in HTML; Related terms: concept react
Promise (WebIDL interface) §: Defined in Web IDL; Referenced in Fetch, File System, Fullscreen API, HTML, WebXR Anchors, WebXR Plane Detection, Notifications API, Topics API, requestStorageAccessFor API, Extending Storage Access API to non-cookie storage, The Storage Access API, Element Capture, Storage, Streams, Test Utils, Gamepad Extensions, Long Animation Frames API, The Capture-Handle Actions Mechanism, Web NFC API, WebAssembly JavaScript Interface: Content Security Policy, WebAssembly JavaScript Interface: ESM Integration, WebAssembly JavaScript Interface: Exception Handling, WebAssembly JavaScript Interface: Promise Integration, WebAssembly JavaScript Interface: JS String Builtins, WebAssembly JavaScript Interface: Type Reflection, Web Bluetooth, Web Bluetooth Scanning, Background Sync, Cookie Store API, Digital Goods API, Direct Sockets API, Document Picture-in-Picture, EyeDropper API, Fenced Frame, File System Access, Handwriting Recognition API, Idle Detection API, Ink API, JS Self-Profiling API, Keyboard Map, Local Font Access, Manifest Incubations, Prerendering Revamped, Observable, Requesting Permissions, Relinquishing Permissions, preferCurrentTab, Prioritized Task Scheduling, Web Serial API, Accelerated Shape Detection in Images, Accelerated Text Detection in Images, Shared Storage API, Storage Buckets API, Private State Token API, Protected Audience, User-Agent Client Hints, Web Preferences API, Web Smart Card API, WebHID API, WebUSB API, Writing Assistance APIs, Audio Output Devices API, Badging API, Battery Status API, Clipboard API and events, Compute Pressure 1, Contact Picker API, Credential Management 1, CSS Font Loading 3, CSS Layout API 1, CSS View Transitions 1, CSSOM, Encrypted Media Extensions, Federated Credential Management API, File API, Gamepad, Geolocation Sensor, MediaStream Image Capture, Indexed DB 3.0, JSON-LD 1.1 Processing Algorithms and API, JSON-LD 1.1 Framing, Media Capabilities, Region Capture, Media Capture and Streams, Viewport Capture, Media Queries 5, Media Session, Device Orientation and Motion, Payment Handler API, Payment Request API, Permissions, Picture-in-Picture, Pointer Lock 2.0, Presentation API, Push API, Remote Playback API, Screen Capture, Screen Orientation, Screen Wake Lock API, Secure Payment Confirmation, Service Workers, WebAssembly JavaScript Interface, WebAssembly Web API, Web Animations, Web Locks API, Web Share API, Web Audio API, Web Audio API 1.1, Web Authentication, WebCodecs, Web Cryptography API, WebGPU, Web MIDI API, Web Neural Network API, WebRTC Encoded Transform, Identity for WebRTC 1.0, WebRTC 1.0, WebTransport, WebXR Hit Test, WebXR Lighting Estimation API 1, WebXR Device API, Window Management, DNT; Related terms: new Promise(executor), Promise.all(iterable), Promise.allSettled(iterable), Promise.any(iterable), Promise.catch(onRejected), Promise.finally(onFinally), Promise.race(iterable), Promise.reject(r), Promise.resolve(x), Promise.then(onFulfilled, onRejected), Promise.try(callback, ...args), Promise.withResolvers(); see also WebIDLPedia
promise type (concept) §: Defined in Web IDL; Referenced in Prerendering Revamped
%Promise.prototype% (WebIDL interface) §: Defined in ECMAScript; see also WebIDLPedia
new Promise(executor) (WebIDL constructor) §: Defined in ECMAScript
%Promise% (WebIDL interface) §: Defined in ECMAScript; Referenced in 2022, ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Import Attributes, JSON modules, ShadowRealm API, Source Phase Imports, Web IDL; see also WebIDLPedia
PromiseCapability Record (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Import Attributes, JSON modules, Source Phase Imports, Web IDL
PromiseReaction Record (concept for ECMAScript ) §: Defined in ECMAScript
PromiseRejectionEvent (WebIDL interface) §: Defined in HTML; Related terms: PromiseRejectionEvent.promise, PromiseRejectionEvent.reason; see also WebIDLPedia
PromiseRejectionEventInit (WebIDL dictionary) §: Defined in HTML; see also WebIDLPedia
PromiseResolve (algorithm) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, JSON modules
WebAssembly.promising(wasmFunc) (WebIDL operation) §: Defined in WebAssembly JavaScript Interface: Promise Integration
prompt (concept for permission ) §: Defined in Permissions; Referenced in requestStorageAccessFor API, The Storage Access API
"prompt" (value for PermissionState WebIDL enumeration) §: Defined in Permissions; Referenced in File System Access, Requesting Permissions, WebUSB API, Device Orientation and Motion
prompt the user to choose (concept) §: Defined in Permissions; Referenced in Web Bluetooth, Local Font Access
BeforeInstallPromptEvent.prompt() (WebIDL operation) §: Defined in Manifest Incubations
RemotePlayback.prompt() (WebIDL operation) §: Defined in Remote Playback API
Window.prompt(message, default) (WebIDL operation) §: Defined in HTML; Referenced in WebDriver BiDi, WebDriver
PromptResponseObject (WebIDL dictionary) §: Defined in Manifest Incubations; Related terms: PromptResponseObject.userChoice; see also WebIDLPedia
proof graph (concept) §: Defined in Verifiable Credential Data Integrity 1.0
proof purpose (concept) §: Defined in Verifiable Credential Data Integrity 1.0: The specific intent for the proof; the reason why an entity created it. The protected declaration acts as a safeguard to prevent the proof from being misused for a purpose other than the one it was intended for.
ProofGraph (concept) §: Defined in Verifiable Credential Data Integrity 1.0
proper table child (concept) §: Defined in CSS Table 3
proper table child (concept) §: Defined in CSS 2.1
proper table row parent (concept) §: Defined in CSS 2.1
proper table-row parent (concept) §: Defined in CSS Table 3
BluetoothRemoteGATTCharacteristic.properties (WebIDL attribute) §: Defined in Web Bluetooth
@property (CSS @rule) §: Defined in CSS Properties and Values API 1; Referenced in CSS Linked Parameters, CSS Variables 2; Related terms: CSS descriptor inherits, CSS descriptor initial-value, CSS descriptor syntax
property (concept for CSS ) §: Defined in CSS Cascading 3 , CSS Cascading 4 , CSS Cascading 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Anchor Positioning, CSS Conditional 5, CSS Syntax 3
property (concept) §: Defined in RDF 1.2 Concepts and Abstract Syntax; Related terms: concept scoped, concept scoped to a sub-tree, concept scoped to an element
Property (concept) §: Defined in CSS 2.1
Property (concept for ARIA ) §: Defined in WAI-ARIA , WAI-ARIA
property declarations (concept for CSS ) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5
Property Descriptor (concept for ECMAScript ) §: Defined in ECMAScript
property key (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in HTML, Streams, ECMAScript Internationalization API, 2022, Intl.DurationFormat, Intl Locale Info, Iterator Helpers, JSON.parse source text access, Promise.try, Set methods, ShadowRealm API, Temporal, Web IDL
property name (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API, JSON.parse source text access, Regular Expression Pattern Modifiers for ECMAScript, Temporal
property-name (CSS property) §: Defined in CSS 2.1 , CSS 2.2
PropertyDefinition (WebIDL dictionary) §: Defined in CSS Properties and Values API 1; Related terms: PropertyDefinition.inherits, PropertyDefinition.initialValue, PropertyDefinition.name, PropertyDefinition.syntax; see also WebIDLPedia
Object.propertyIsEnumerable(V) (WebIDL operation) §: Defined in ECMAScript
TransitionEvent.propertyName (WebIDL attribute) §: Defined in CSS Transitions
TransitionEventInit.propertyName (WebIDL dictionary member) §: Defined in CSS Transitions
prophoto-rgb (CSS value for color() ) §: Defined in CSS Color 4; Referenced in CSS Color 5
proportional-nums (CSS value for font-variant-numeric ) §: Defined in CSS Fonts 4; Referenced in CSS Snapshot 2023
proportional-width (CSS value for font-variant-east-asian ) §: Defined in CSS Fonts 4; Referenced in CSS Snapshot 2023
protected term definition (concept) §: Defined in JSON-LD 1.1
"protected term redefinition" (value for JsonLdErrorCode WebIDL enumeration) §: Defined in JSON-LD 1.1 Processing Algorithms and API
Navigator.protectedAudience (WebIDL attribute) §: Defined in Protected Audience
ProtectedAudience (WebIDL interface) §: Defined in Protected Audience; Related terms: ProtectedAudience.queryFeatureSupport(feature); see also WebIDLPedia
ProtectedAudiencePrivateAggregationConfig (WebIDL dictionary) §: Defined in Protected Audience; Related terms: ProtectedAudiencePrivateAggregationConfig.aggregationCoordinatorOrigin; see also WebIDLPedia
"proto-mismatch" (value for SmartCardResponseCode WebIDL enumeration) §: Defined in Web Smart Card API
protocol (concept for state of constructor string parser ) §: Defined in URL Pattern; Referenced in HTML Sanitizer API
DigitalCredential.protocol (WebIDL attribute) §: Defined in Digital Credentials
DigitalCredentialsRequest.protocol (WebIDL dictionary member) §: Defined in Digital Credentials
FederatedCredential.protocol (WebIDL attribute) §: Defined in Credential Management 1
FederatedCredentialInit.protocol (WebIDL dictionary member) §: Defined in Credential Management 1
HTMLHyperlinkElementUtils.protocol (WebIDL attribute) §: Defined in HTML
Location.protocol (WebIDL attribute) §: Defined in HTML; Referenced in URL
RTCDataChannel.protocol (WebIDL attribute) §: Defined in WebRTC 1.0
RTCDataChannelInit.protocol (WebIDL dictionary member) §: Defined in WebRTC 1.0
RTCDataChannelStats.protocol (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCIceCandidate.protocol (WebIDL attribute) §: Defined in WebRTC 1.0
RTCIceCandidateStats.protocol (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCIdentityProviderDetails.protocol (WebIDL dictionary member) §: Defined in Identity for WebRTC 1.0
RTCIdentityProviderOptions.protocol (WebIDL dictionary member) §: Defined in Identity for WebRTC 1.0
SmartCardTransmitOptions.protocol (WebIDL dictionary member) §: Defined in Web Smart Card API
protocol (WebIDL attribute for URL ) §: Defined in URL; Referenced in URL Pattern
URLPattern.protocol (WebIDL attribute) §: Defined in URL Pattern
URLPatternInit.protocol (WebIDL dictionary member) §: Defined in URL Pattern
URLPatternResult.protocol (WebIDL dictionary member) §: Defined in URL Pattern
WebSocket.protocol (WebIDL attribute) §: Defined in WebSockets
WebTransport.protocol (WebIDL attribute) §: Defined in WebTransport
WorkerLocation.protocol (WebIDL attribute) §: Defined in HTML
WebTransport.[[Protocol]] (internal slot) §: Defined in WebTransport
protocol matches a special scheme flag (concept for constructor string parser ) §: Defined in URL Pattern
USBDeviceFilter.protocolCode (WebIDL dictionary member) §: Defined in WebUSB API
FederatedCredentialRequestOptions.protocols (WebIDL dictionary member) §: Defined in Credential Management 1
WebTransportOptions.protocols (WebIDL dictionary member) §: Defined in WebTransport
AsyncGeneratorFunction.prototype (WebIDL attribute) §: Defined in ECMAScript
GeneratorFunction.prototype (WebIDL attribute) §: Defined in ECMAScript
FederatedCredential.provider (WebIDL attribute) §: Defined in Credential Management 1
FederatedCredentialInit.provider (WebIDL dictionary member) §: Defined in Credential Management 1
IdentityProviderWellKnown.provider_urls (WebIDL dictionary member) §: Defined in Federated Credential Management API
FederatedCredentialRequestOptions.providers (WebIDL dictionary member) §: Defined in Credential Management 1
IdentityCredentialRequestOptions.providers (WebIDL dictionary member) §: Defined in Federated Credential Management API
proximity (CSS value for scroll-snap-type ) §: Defined in CSS Scroll Snap 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
"proximity" (permission name) §: Defined in Proximity Sensor
proximity to the viewport (concept) §: Defined in CSS Containment 2
proximity-sensor-feature (concept) §: Defined in Proximity Sensor
ProximitySensor (WebIDL interface) §: Defined in Proximity Sensor; Related terms: ProximitySensor.distance, ProximitySensor.max, ProximitySensor.near, new ProximitySensor(sensorOptions); see also WebIDLPedia
new ProximitySensor(sensorOptions) (WebIDL constructor) §: Defined in Proximity Sensor
Proxy (WebIDL interface) §: Defined in ECMAScript; Related terms: new Proxy(target, handler), Proxy.revocable(target, handler); see also WebIDLPedia
Proxy exotic object (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Web IDL
proxy-authentication entry (concept) §: Defined in Fetch; Referenced in Clear Site Data
new Proxy(target, handler) (WebIDL constructor) §: Defined in ECMAScript
%Proxy% (WebIDL interface) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Source Phase Imports; see also WebIDLPedia
ProxyCreate (algorithm) §: Defined in ECMAScript; Referenced in Web IDL
pseudo-class (concept) §: Defined in Selectors 4; Referenced in CSS Extensions, Quirks Mode, Speculation Rules, Picture-in-Picture, WebXR DOM Overlays
<pseudo-class-selector> (CSS type) §: Defined in Selectors 4
pseudo-classes (concept) §: Defined in CSS 2.1; Referenced in Quirks Mode, CSS Pseudo-Elements 4
pseudo-classes:::active (concept) §: Defined in CSS 2.1
pseudo-classes:::focus (concept) §: Defined in CSS 2.1
pseudo-classes:::hover (concept) §: Defined in CSS 2.1
pseudo-classes:::lang (concept) §: Defined in CSS 2.1
pseudo-classes:::link (concept) §: Defined in CSS 2.1
pseudo-classes:::visited (concept) §: Defined in CSS 2.1
<pseudo-compound-selector> (CSS type) §: Defined in Selectors 4
pseudo-element (concept) §: Defined in Selectors 4; Referenced in CSS Display 4, CSS Positioned Layout 4, Quirks Mode, CSS Backgrounds 3, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Conditional 5, CSS Lists 3, CSS Pseudo-Elements 4, CSS Scrollbars Styling 1, CSS View Transitions 1, CSSOM View, Web Animations
KeyframeEffect.pseudo-element parsing (WebIDL attribute) §: Defined in Web Animations
<pseudo-element-selector> (CSS type) §: Defined in Selectors 4; Referenced in CSS Pseudo-Elements 4, CSSOM, Web Animations
pseudo-elements (concept) §: Defined in CSS 2.1; Referenced in CSS Anchor Positioning, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Cascading 6, CSS Generated Content 3, CSS Custom Highlight API 1, CSS Pseudo-Elements 4, CSS Scrollbars Styling 1, CSS Text Decoration 4, CSS View Transitions 1
pseudo-elements:::after (concept) §: Defined in CSS 2.1
pseudo-elements:::before (concept) §: Defined in CSS 2.1
pseudo-elements:::first-letter (concept) §: Defined in CSS 2.1
pseudo-elements:::first-line (concept) §: Defined in CSS 2.1
<pseudo-page> (CSS type) §: Defined in CSS Paged Media 3
CSSPseudoElement.pseudo(type) (WebIDL operation) §: Defined in CSS Pseudo-Elements 4
CSSPseudoElement.pseudo(type) (WebIDL attribute) §: Defined in CSS Pseudo-Elements 4
Element.pseudo(type) (WebIDL operation) §: Defined in CSS Pseudo-Elements 4
AnimationEvent.pseudoElement (WebIDL attribute) §: Defined in CSS Animations 1
AnimationEventInit.pseudoElement (WebIDL dictionary member) §: Defined in CSS Animations 1
GetAnimationsOptions.pseudoElement (WebIDL dictionary member) §: Defined in Web Animations
KeyframeEffect.pseudoElement (WebIDL attribute) §: Defined in Web Animations
KeyframeEffectOptions.pseudoElement (WebIDL dictionary member) §: Defined in Web Animations
TransitionEvent.pseudoElement (WebIDL attribute) §: Defined in CSS Transitions
TransitionEventInit.pseudoElement (WebIDL dictionary member) §: Defined in CSS Transitions
pt (CSS value for <length> ) §: Defined in CSS Values 3 , CSS Values 4 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
<pt-class-selector> (CSS type) §: Defined in CSS View Transitions 2
<pt-name-and-class-selector> (CSS type) §: Defined in CSS View Transitions 2
<pt-name-selector> (CSS type) §: Defined in CSS View Transitions 1; Referenced in CSS View Transitions 2
pt(value) (WebIDL operation for CSS ) §: Defined in CSS Typed OM 1
PublicKeyCredentialCreationOptions.pubKeyCredParams (WebIDL dictionary member) §: Defined in Web Authentication
PublicKeyCredentialCreationOptionsJSON.pubKeyCredParams (WebIDL dictionary member) §: Defined in Web Authentication
"public" (value for IPAddressSpace WebIDL enumeration) §: Defined in Private Network Access
public (concept for IP address space ) §: Defined in Private Network Access
"public" (value for KeyType WebIDL enumeration) §: Defined in Web Cryptography API
EcdhKeyDeriveParams.public (WebIDL dictionary member) §: Defined in Web Cryptography API
public ID (concept for DocumentType ) §: Defined in DOM; Referenced in HTML
public suffix (concept for host ) §: Defined in URL; Referenced in Fetch, HTML, Web Authentication
"public-key" (value for PublicKeyCredentialType WebIDL enumeration) §: Defined in Web Authentication; Referenced in Secure Payment Confirmation
publication resource (concept) §: Defined in EPUB 3.3
RsaKeyAlgorithm.publicExponent (WebIDL dictionary member) §: Defined in Web Cryptography API
RsaKeyGenParams.publicExponent (WebIDL dictionary member) §: Defined in Web Cryptography API
DocumentType.publicId (WebIDL attribute) §: Defined in DOM
publicKey (algorithm for credential record ) §: Defined in Web Authentication
AuthenticatorAttestationResponseJSON.publicKey (WebIDL dictionary member) §: Defined in Web Authentication
CredentialCreationOptions.publicKey (WebIDL dictionary member) §: Defined in Web Authentication
CredentialRequestOptions.publicKey (WebIDL dictionary member) §: Defined in Web Authentication; Referenced in Secure Payment Confirmation
CryptoKeyPair.publicKey (WebIDL dictionary member) §: Defined in Web Cryptography API
publickey-credentials-create-feature (concept) §: Defined in Web Authentication; Referenced in Credential Management 1
publickey-credentials-get-feature (concept) §: Defined in Web Authentication; Referenced in Credential Management 1
AuthenticatorAttestationResponseJSON.publicKeyAlgorithm (WebIDL dictionary member) §: Defined in Web Authentication
PublicKeyCredential (WebIDL interface) §: Defined in Web Authentication; Referenced in Navigational-Tracking Mitigations, Credential Management 1, Secure Payment Confirmation; Related terms: PublicKeyCredential.authenticatorAttachment, PublicKeyCredential.[[clientExtensionsResults]], PublicKeyCredential.[[discovery]], PublicKeyCredential.[[identifier]], PublicKeyCredential.rawId, PublicKeyCredential.response, PublicKeyCredential.[[type]], PublicKeyCredential.[[Create]](origin, options, sameOriginWithAncestors), PublicKeyCredential.[[DiscoverFromExternalSource]](origin, options, sameOriginWithAncestors), PublicKeyCredential.getClientCapabilities(), PublicKeyCredential.getClientExtensionResults(), PublicKeyCredential.isConditionalMediationAvailable(), PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable(), PublicKeyCredential.parseCreationOptionsFromJSON(options), PublicKeyCredential.parseRequestOptionsFromJSON(options), PublicKeyCredential.signalAllAcceptedCredentials(options), PublicKeyCredential.signalCurrentUserDetails(options), PublicKeyCredential.signalUnknownCredential(options), PublicKeyCredential.[[Store]](credential, sameOriginWithAncestors), PublicKeyCredential.toJSON(); see also WebIDLPedia
PublicKeyCredentialClientCapabilities (WebIDL type alias) §: Defined in Web Authentication; see also WebIDLPedia
PublicKeyCredentialCreationOptions (WebIDL dictionary) §: Defined in Web Authentication; Related terms: PublicKeyCredentialCreationOptions.attestation, PublicKeyCredentialCreationOptions.attestationFormats, PublicKeyCredentialCreationOptions.authenticatorSelection, PublicKeyCredentialCreationOptions.challenge, PublicKeyCredentialCreationOptions.excludeCredentials, PublicKeyCredentialCreationOptions.extensions, PublicKeyCredentialCreationOptions.hints, PublicKeyCredentialCreationOptions.pubKeyCredParams, PublicKeyCredentialCreationOptions.rp, PublicKeyCredentialCreationOptions.timeout, PublicKeyCredentialCreationOptions.user; see also WebIDLPedia
PublicKeyCredentialCreationOptionsJSON (WebIDL dictionary) §: Defined in Web Authentication; Related terms: PublicKeyCredentialCreationOptionsJSON.attestation, PublicKeyCredentialCreationOptionsJSON.attestationFormats, PublicKeyCredentialCreationOptionsJSON.authenticatorSelection, PublicKeyCredentialCreationOptionsJSON.challenge, PublicKeyCredentialCreationOptionsJSON.excludeCredentials, PublicKeyCredentialCreationOptionsJSON.extensions, PublicKeyCredentialCreationOptionsJSON.hints, PublicKeyCredentialCreationOptionsJSON.pubKeyCredParams, PublicKeyCredentialCreationOptionsJSON.rp, PublicKeyCredentialCreationOptionsJSON.timeout, PublicKeyCredentialCreationOptionsJSON.user; see also WebIDLPedia
PublicKeyCredentialDescriptor (WebIDL dictionary) §: Defined in Web Authentication; Referenced in CTAP, Secure Payment Confirmation; Related terms: PublicKeyCredentialDescriptor.id, PublicKeyCredentialDescriptor.transports, PublicKeyCredentialDescriptor.type; see also WebIDLPedia
PublicKeyCredentialDescriptorJSON (WebIDL dictionary) §: Defined in Web Authentication; Related terms: PublicKeyCredentialDescriptorJSON.id, PublicKeyCredentialDescriptorJSON.transports, PublicKeyCredentialDescriptorJSON.type; see also WebIDLPedia
PublicKeyCredentialEntity (WebIDL dictionary) §: Defined in Web Authentication; Related terms: PublicKeyCredentialEntity.name; see also WebIDLPedia
PublicKeyCredentialHint (WebIDL enumeration) §: Defined in Web Authentication; Related terms: value client-device, value hybrid, value security-key; see also WebIDLPedia
PublicKeyCredentialJSON (WebIDL type alias) §: Defined in Web Authentication; see also WebIDLPedia
PublicKeyCredentialParameters (WebIDL dictionary) §: Defined in Web Authentication; Referenced in CTAP; Related terms: PublicKeyCredentialParameters.alg, PublicKeyCredentialParameters.type; see also WebIDLPedia
PublicKeyCredentialRequestOptions (WebIDL dictionary) §: Defined in Web Authentication; Referenced in Secure Payment Confirmation; Related terms: PublicKeyCredentialRequestOptions.allowCredentials, PublicKeyCredentialRequestOptions.challenge, PublicKeyCredentialRequestOptions.extensions, PublicKeyCredentialRequestOptions.hints, PublicKeyCredentialRequestOptions.rpId, PublicKeyCredentialRequestOptions.timeout, PublicKeyCredentialRequestOptions.userVerification; see also WebIDLPedia
PublicKeyCredentialRequestOptionsJSON (WebIDL dictionary) §: Defined in Web Authentication; Related terms: PublicKeyCredentialRequestOptionsJSON.allowCredentials, PublicKeyCredentialRequestOptionsJSON.challenge, PublicKeyCredentialRequestOptionsJSON.extensions, PublicKeyCredentialRequestOptionsJSON.hints, PublicKeyCredentialRequestOptionsJSON.rpId, PublicKeyCredentialRequestOptionsJSON.timeout, PublicKeyCredentialRequestOptionsJSON.userVerification; see also WebIDLPedia
PublicKeyCredentialRpEntity (WebIDL dictionary) §: Defined in Web Authentication; Referenced in CTAP; Related terms: PublicKeyCredentialRpEntity.id; see also WebIDLPedia
PublicKeyCredentialType (WebIDL enumeration) §: Defined in Web Authentication; Related terms: value public-key; see also WebIDLPedia
PublicKeyCredentialUserEntity (WebIDL dictionary) §: Defined in Web Authentication; Referenced in CTAP; Related terms: PublicKeyCredentialUserEntity.displayName, PublicKeyCredentialUserEntity.id; see also WebIDLPedia
PublicKeyCredentialUserEntityJSON (WebIDL dictionary) §: Defined in Web Authentication; Related terms: PublicKeyCredentialUserEntityJSON.displayName, PublicKeyCredentialUserEntityJSON.id, PublicKeyCredentialUserEntityJSON.name; see also WebIDLPedia
UnderlyingSource.pull (WebIDL dictionary member) §: Defined in Streams
pull from bytes (concept for ReadableStream ) §: Defined in Streams; Referenced in Fetch, WebTransport
pullAlgorithm (concept for set up of ReadableStream interface ) §: Defined in Streams; Referenced in Fetch, Direct Sockets API, MediaStreamTrack Insertable Media Processing using Streams, Service Workers, WebTransport
pullAlgorithm (concept for set up with byte reading support of ReadableStream interface ) §: Defined in Streams; Referenced in Direct Sockets API, Web Serial API, WebTransport
[[PullSteps]] (algorithm for ReadableStreamDefaultController ) §: Defined in Streams
[[PullSteps]] (algorithm for ReadableByteStreamController ) §: Defined in Streams
[[PullSteps]] (algorithm for ReadableStreamController ) §: Defined in Streams
GamepadHapticActuator.pulse() (WebIDL operation) §: Defined in Gamepad Extensions
punctuation (CSS value for text-autospace ) §: Defined in CSS Text 4
punctuation (CSS value for text-emphasis-skip ) §: Defined in CSS Text Decoration 4
PurchaseDetails (WebIDL dictionary) §: Defined in Digital Goods API; Related terms: PurchaseDetails.itemId, PurchaseDetails.purchaseToken; see also WebIDLPedia
PurchaseDetails.purchaseToken (WebIDL dictionary member) §: Defined in Digital Goods API
purple (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
purple (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4 , CSS 2.2
push (concept for I of O queue ) §: Defined in Encoding
"push" (value for NavigationType WebIDL enumeration) §: Defined in HTML; Referenced in CSS View Transitions 2
"push" (value for NavigationHistoryBehavior WebIDL enumeration) §: Defined in HTML
push (concept for stack ) §: Defined in Infra; Referenced in Console, HTML, Web IDL, User-Agent Client Hints, WebHID API, Publication Manifest, WebGPU
"push" (permission name) §: Defined in Push API; Referenced in Service Workers
Array.push(...items) (WebIDL operation) §: Defined in ECMAScript
GPUDebugCommandsMixin.pushDebugGroup(groupLabel) (WebIDL operation) §: Defined in WebGPU
PushEncryptionKeyName (WebIDL enumeration) §: Defined in Push API; Related terms: value auth, value p256dh; see also WebIDLPedia
GPUDevice.pushErrorScope(filter) (WebIDL operation) §: Defined in WebGPU
PushEvent (WebIDL interface) §: Defined in Push API; Referenced in Service Workers; Related terms: PushEvent.data, WebIDL constructor constructor(); see also WebIDLPedia
PushEventInit (WebIDL dictionary) §: Defined in Push API; Related terms: PushEventInit.data; see also WebIDLPedia
ServiceWorkerRegistration.pushManager (WebIDL attribute) §: Defined in Push API
PushManager (WebIDL interface) §: Defined in Push API; Related terms: PushManager.supportedContentEncodings, PushManager.getSubscription(), PushManager.permissionState(), PushManager.subscribe(); see also WebIDLPedia
PushMessageData (WebIDL interface) §: Defined in Push API; Related terms: PushMessageData.arrayBuffer(), PushMessageData.blob(), PushMessageData.bytes(), PushMessageData.json(), PushMessageData.text(); see also WebIDLPedia
PushMessageDataInit (WebIDL type alias) §: Defined in Push API; see also WebIDLPedia
PushPermissionDescriptor (WebIDL dictionary) §: Defined in Push API; Related terms: PushPermissionDescriptor.userVisibleOnly; see also WebIDLPedia
History.pushState(data, unused, url) (WebIDL operation) §: Defined in HTML; Referenced in CSS Values 3
PushSubscription (WebIDL interface) §: Defined in Push API; Related terms: PushSubscription.endpoint, PushSubscription.expirationTime, PushSubscription.options, PushSubscription.getKey(), PushSubscription.toJSON(), PushSubscription.unsubscribed; see also WebIDLPedia
PushSubscriptionChangeEvent (WebIDL interface) §: Defined in Push API; Related terms: PushSubscriptionChangeEvent.newSubscription, PushSubscriptionChangeEvent.oldSubscription, WebIDL constructor constructor(); see also WebIDLPedia
PushSubscriptionChangeEventInit (WebIDL dictionary) §: Defined in Push API; Related terms: PushSubscriptionChangeEventInit.newSubscription, PushSubscriptionChangeEventInit.oldSubscription; see also WebIDLPedia
PushSubscriptionJSON (WebIDL dictionary) §: Defined in Push API; Related terms: PushSubscriptionJSON.endpoint, PushSubscriptionJSON.expirationTime, PushSubscriptionJSON.keys; see also WebIDLPedia
PushSubscriptionOptions (WebIDL interface) §: Defined in Push API; Related terms: PushSubscriptionOptions.applicationServerKey, PushSubscriptionOptions.userVisibleOnly; see also WebIDLPedia
PushSubscriptionOptionsInit (WebIDL dictionary) §: Defined in Push API; Related terms: PushSubscriptionOptionsInit.applicationServerKey, PushSubscriptionOptionsInit.userVisibleOnly; see also WebIDLPedia
Cache.put(request, response) (WebIDL operation) §: Defined in Service Workers
IDBObjectStore.put(value, key) (WebIDL operation) §: Defined in Indexed DB 3.0
PutForwards (WebIDL extended attribute) §: Defined in Web IDL; Referenced in DOM, Fenced Frame, CSS Anchor Positioning, CSS Animations 1, CSS Conditional 3, CSS Fonts 4, CSS Nesting, CSS Shadow Parts, CSSOM
CanvasImageData.putImageData() (WebIDL operation) §: Defined in HTML
PutValue (algorithm) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management
px (CSS value for <length> ) §: Defined in CSS Values 3 , CSS Values 4 , CSS 2.2; Referenced in CSS Conditional Values 1, CSS Shapes 2, Responsive Image Client Hints, CSS Snapshot 2022, CSS Snapshot 2023, CSS Transforms 1, CSS Typed OM 1, CSSOM, CSSOM View, Media Queries 4, Media Queries 5, Picture-in-Picture, Scroll-driven Animations, Window Management
px(value) (WebIDL operation for CSS ) §: Defined in CSS Typed OM 1