Terms starting with letter h

Color key: WebIDL CSS Markup HTTP

h (CSS value for hsl() ) §: Defined in CSS Color 5
h (CSS value for hwb() ) §: Defined in CSS Color 5
h (CSS value for lch() ) §: Defined in CSS Color 5
h (CSS value for oklch() ) §: Defined in CSS Color 5
CSSHSL.h (WebIDL attribute) §: Defined in CSS Typed OM 1
CSSHWB.h (WebIDL attribute) §: Defined in CSS Typed OM 1
CSSLCH.h (WebIDL attribute) §: Defined in CSS Typed OM 1
CSSOKLCH.h (WebIDL attribute) §: Defined in CSS Typed OM 1
h1 (markup element) §: Defined in HTML; Referenced in Selectors 4, WAI-ARIA, WAI-ARIA; Related terms: markup attribute align
h2 (markup element) §: Defined in HTML; Referenced in WAI-ARIA, WAI-ARIA; Related terms: markup attribute align
h3 (markup element) §: Defined in HTML; Referenced in WAI-ARIA, WAI-ARIA; Related terms: markup attribute align
h4 (markup element) §: Defined in HTML; Referenced in WAI-ARIA, WAI-ARIA; Related terms: markup attribute align
h5 (markup element) §: Defined in HTML; Referenced in WAI-ARIA, WAI-ARIA; Related terms: markup attribute align
h6 (markup element) §: Defined in HTML; Referenced in WAI-ARIA, WAI-ARIA; Related terms: markup attribute align
had conflicting credentials (concept for prefetch record ) §: Defined in Prefetch
LayoutShift.hadRecentInput (WebIDL attribute) §: Defined in Layout Instability
"half" (value for RequestDuplex WebIDL enumeration) §: Defined in Fetch
Halfwidth (concept) §: Defined in Internationalization Glossary
Gamepad.hand (WebIDL attribute) §: Defined in Gamepad Extensions
XRInputSource.hand (WebIDL attribute) §: Defined in WebXR Hand Input 1
XRInputSource.handedness (WebIDL attribute) §: Defined in WebXR Device API
handheld (CSS value for @media ) §: Defined in CSS 2.2 , Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
CaptureHandle.handle (WebIDL dictionary member) §: Defined in Capture Handle - Bootstrapping Collaboration when Screensharing
CaptureHandleConfig.handle (WebIDL dictionary member) §: Defined in Capture Handle - Bootstrapping Collaboration when Screensharing
FileSystemPermissionDescriptor.handle (WebIDL dictionary member) §: Defined in File System Access
MediaSource.handle (WebIDL attribute) §: Defined in Media Source Extensions™
handle content codings (concept) §: Defined in Fetch; Referenced in Loading Signed Exchanges
Handle errors (algorithm) §: Defined in Incremental Font Transfer
Handle Fetch (concept) §: Defined in Service Workers; Referenced in Fetch, Navigational-Tracking Mitigations
handle fetch task source (concept) §: Defined in Service Workers
handle functional event task source (concept) §: Defined in Service Workers
Handle input for EditContext (concept) §: Defined in EditContext API; Referenced in Input Events 2
FetchEvent.handled (WebIDL attribute) §: Defined in Service Workers
FetchEventInit.handled (WebIDL dictionary member) §: Defined in Service Workers
EventListener.handleEvent(event) (WebIDL operation) §: Defined in DOM; Referenced in UI Events
NavigationInterceptOptions.handler (WebIDL dictionary member) §: Defined in HTML
"hanging" (value for CanvasTextBaseline WebIDL enumeration) §: Defined in HTML
hanging (CSS value for dominant-baseline ) §: Defined in CSS Inline Layout 3
hanging (CSS value for initial-letter-align ) §: Defined in CSS Inline Layout 3
hanging (CSS value for text-indent ) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
hanging baseline (concept) §: Defined in CSS Inline Layout 3
hanging-punctuation (CSS property) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Inline Layout 3; Related terms: CSS value allow-end, CSS value first, CSS value force-end, CSS value last, CSS value none
TextMetrics.hangingBaseline (WebIDL attribute) §: Defined in HTML
"hangup" (value for MediaSessionAction WebIDL enumeration) §: Defined in Media Session
Gamepad.hapticActuators (WebIDL attribute) §: Defined in Gamepad Extensions
hard (value for wrap attribute of textarea element ) §: Defined in HTML
hard-light (CSS value for <blend-mode> ) §: Defined in Compositing 2 , Compositing 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
MLGraphBuilder.hardSigmoid(input, options) (WebIDL operation) §: Defined in Web Neural Network API
MLGraphBuilder.hardSigmoid(options) (WebIDL operation) §: Defined in Web Neural Network API
MLGraphBuilder.hardSwish() (WebIDL operation) §: Defined in Web Neural Network API
MLGraphBuilder.hardSwish(input) (WebIDL operation) §: Defined in Web Neural Network API
"hardware" (value for FlowControlType WebIDL enumeration) §: Defined in Web Serial API
"hardware" (value for AudioContextRenderSizeCategory WebIDL enumeration) §: Defined in Web Audio API
"hardware-context-reset" (value for MediaKeySessionClosedReason WebIDL enumeration) §: Defined in Encrypted Media Extensions
"hardware-encoder-error" (value for RTCErrorDetailType WebIDL enumeration) §: Defined in WebRTC 1.0
"hardware-encoder-not-available" (value for RTCErrorDetailType WebIDL enumeration) §: Defined in WebRTC 1.0
VideoDecoderConfig.hardwareAcceleration (WebIDL dictionary member) §: Defined in WebCodecs
VideoEncoderConfig.hardwareAcceleration (WebIDL dictionary member) §: Defined in WebCodecs
HardwareAcceleration (WebIDL enumeration) §: Defined in WebCodecs; Related terms: value no-preference, value prefer-hardware, value prefer-software; see also WebIDLPedia
has an attribute (concept) §: Defined in DOM; Referenced in Web Animations
has ever been evaluated flag (concept for script resource ) §: Defined in Service Workers; Referenced in DOM
has focus steps (concept) §: Defined in HTML; Referenced in Content Index, Fenced Frame, Clipboard API and events, Service Workers
has not shifted (concept) §: Defined in Layout Instability
has regexp groups (concept for URL pattern ) §: Defined in URL Pattern; Referenced in Service Workers
has shifted (concept) §: Defined in Layout Instability
:has-allowed pseudo-element (concept) §: Defined in Selectors 4
:has() (CSS selector) §: Defined in Selectors 4
MediaKeyStatusMap.has() (WebIDL operation) §: Defined in Encrypted Media Extensions
NamedFlowMap.has() (WebIDL operation) §: Defined in CSS Regions 1
CacheStorage.has(cacheName) (WebIDL operation) §: Defined in Service Workers
Map.has(key) (WebIDL operation) §: Defined in ECMAScript
WeakMap.has(key) (WebIDL operation) §: Defined in ECMAScript
URLSearchParams.has(name, value) (WebIDL operation) §: Defined in URL
FormData.has(name) (WebIDL operation) §: Defined in XMLHttpRequest; Referenced in Credential Management 1
Headers.has(name) (WebIDL operation) §: Defined in Fetch
StylePropertyMap.has(property) (WebIDL operation) §
StylePropertyMapReadOnly.has(property) (WebIDL operation) §: Defined in CSS Typed OM 1
Reflect.has(target, propertyKey) (WebIDL operation) §: Defined in ECMAScript
has(value) (WebIDL operation for Set ) §: Defined in ECMAScript
WeakSet.has(value) (WebIDL operation) §: Defined in ECMAScript
VideoConfiguration.hasAlphaChannel (WebIDL dictionary member) §: Defined in Media Capabilities
Element.hasAttribute(qualifiedName) (WebIDL operation) §: Defined in DOM; Referenced in WebDriver
Element.hasAttributeNS(namespace, localName) (WebIDL operation) §: Defined in DOM
Element.hasAttributes() (WebIDL operation) §: Defined in DOM
UserActivation.hasBeenActive (WebIDL attribute) §: Defined in HTML
HasBinding(N) (algorithm for Declarative Environment Record ) §: Defined in ECMAScript
HasBinding(N) (algorithm for Object Environment Record ) §: Defined in ECMAScript
HasBinding(N) (algorithm for Global Environment Record ) §: Defined in ECMAScript
Node.hasChildNodes() (WebIDL operation) §: Defined in DOM
GPUBufferBindingLayout.hasDynamicOffset (WebIDL dictionary member) §: Defined in WebGPU
HasEitherUnicodeFlag (algorithm) §: Defined in ECMAScript
DOMImplementation.hasFeature() (WebIDL operation) §: Defined in DOM
EpubReadingSystem.hasFeature() (WebIDL operation) §: Defined in EPUB Reading Systems 3.3
Document.hasFocus() (WebIDL operation) §: Defined in HTML
hash (concept for state of constructor string parser ) §: Defined in URL Pattern
EcdsaParams.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
HkdfParams.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
HmacImportParams.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
HmacKeyAlgorithm.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
HmacKeyGenParams.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
HTMLHyperlinkElementUtils.hash (WebIDL attribute) §: Defined in HTML
Location.hash (WebIDL attribute) §: Defined in HTML
Pbkdf2Params.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
RsaHashedImportParams.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
RsaHashedKeyAlgorithm.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
RsaHashedKeyGenParams.hash (WebIDL dictionary member) §: Defined in Web Cryptography API
hash (WebIDL attribute for URL ) §: Defined in URL
URLPattern.hash (WebIDL attribute) §: Defined in URL Pattern
URLPatternInit.hash (WebIDL dictionary member) §: Defined in URL Pattern
URLPatternResult.hash (WebIDL dictionary member) §: Defined in URL Pattern
WorkerLocation.hash (WebIDL attribute) §: Defined in HTML
hash-algo (grammar) §: Defined in SRI
hash-algorithm (grammar) §: Defined in Content Security Policy 3
hash-expression (grammar) §: Defined in SRI
hash-source (grammar) §: Defined in Content Security Policy 3; Referenced in Speculation Rules, Loading Signed Exchanges, Content Security Policy: Embedded Enforcement
<hash-token> (CSS type) §: Defined in CSS Syntax 3; Referenced in CSS Color 4, Selectors 4
hash-with-options (grammar) §: Defined in SRI
HashAlgorithmIdentifier (WebIDL type alias) §: Defined in Web Cryptography API; see also WebIDLPedia
NavigateEvent.hashChange (WebIDL attribute) §: Defined in HTML
NavigateEventInit.hashChange (WebIDL dictionary member) §: Defined in HTML
hashchange (event for Window ) §: Defined in HTML
HashChangeEvent (WebIDL interface) §: Defined in HTML; Referenced in DOM, URL, URL Fragment Text Directives; Related terms: HashChangeEvent.newURL, HashChangeEvent.oldURL; see also WebIDLPedia
HashChangeEventInit (WebIDL dictionary) §: Defined in HTML; see also WebIDLPedia
RegExp.hasIndices (WebIDL attribute) §: Defined in ECMAScript
@@hasInstance (WebIDL constant) §: Defined in ECMAScript
Symbol.hasInstance (WebIDL attribute) §: Defined in ECMAScript
HasLexicalDeclaration(N) (algorithm for Global Environment Record ) §: Defined in ECMAScript
HIDReportItem.hasNull (WebIDL dictionary member) §: Defined in WebHID API
GamepadPose.hasOrientation (WebIDL attribute) §: Defined in Gamepad Extensions
Object.hasOwn(O, P) (WebIDL operation) §: Defined in ECMAScript
HasOwnProperty (algorithm) §: Defined in ECMAScript; Referenced in HTML, ShadowRealm API, Indexed DB 3.0
Object.hasOwnProperty(V) (WebIDL operation) §: Defined in ECMAScript
Element.hasPointerCapture() (WebIDL operation) §: Defined in Pointer Events
GamepadPose.hasPosition (WebIDL attribute) §: Defined in Gamepad Extensions
HIDReportItem.hasPreferredState (WebIDL dictionary member) §: Defined in WebHID API
Document.hasPrivateToken(issuer) (WebIDL operation) §: Defined in Private State Token API
HasProperty (algorithm) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API, Temporal
Sensor.hasReading (WebIDL attribute) §: Defined in Generic Sensor API
Document.hasRedemptionRecord(issuer) (WebIDL operation) §: Defined in Private State Token API
URLPattern.hasRegExpGroups (WebIDL attribute) §: Defined in URL Pattern
HasRestrictedGlobalProperty(N) (algorithm for Global Environment Record ) §: Defined in ECMAScript
Document.hasStorageAccess() (WebIDL operation) §: Defined in The Storage Access API
HasSuperBinding() (algorithm for Declarative Environment Record ) §: Defined in ECMAScript
HasSuperBinding() (algorithm for Object Environment Record ) §: Defined in ECMAScript
HasSuperBinding() (algorithm for Function Environment Record ) §: Defined in ECMAScript
HasSuperBinding() (algorithm for Global Environment Record ) §: Defined in ECMAScript
HasThisBinding() (algorithm for Declarative Environment Record ) §: Defined in ECMAScript
HasThisBinding() (algorithm for Object Environment Record ) §: Defined in ECMAScript
HasThisBinding() (algorithm for Function Environment Record ) §: Defined in ECMAScript
HasThisBinding() (algorithm for Global Environment Record ) §: Defined in ECMAScript
HasThisBinding() (algorithm for Module Environment Record ) §: Defined in ECMAScript
NavigateEvent.hasUAVisualTransition (WebIDL attribute) §: Defined in HTML
NavigateEventInit.hasUAVisualTransition (WebIDL dictionary member) §: Defined in HTML
PopStateEvent.hasUAVisualTransition (WebIDL attribute) §: Defined in HTML
PopStateEventInit.hasUAVisualTransition (WebIDL dictionary member) §: Defined in HTML
HasVarDeclaration(N) (algorithm for Global Environment Record ) §: Defined in ECMAScript
HTMLMediaElement.HAVE_CURRENT_DATA (WebIDL constant) §: Defined in HTML; Referenced in Encrypted Media Extensions, Media Source Extensions™
HTMLMediaElement.HAVE_ENOUGH_DATA (WebIDL constant) §: Defined in HTML; Referenced in Encrypted Media Extensions, Media Source Extensions™
HTMLMediaElement.HAVE_FUTURE_DATA (WebIDL constant) §: Defined in HTML; Referenced in Encrypted Media Extensions, Media Source Extensions™
HTMLMediaElement.HAVE_METADATA (WebIDL constant) §: Defined in HTML; Referenced in Accelerated Shape Detection in Images, Encrypted Media Extensions, Media Source Extensions™, Media Capture and Streams
HTMLMediaElement.HAVE_NOTHING (WebIDL constant) §: Defined in HTML; Referenced in Accelerated Shape Detection in Images, Media Source Extensions™, Media Capture from DOM Elements, Open Screen Protocol, Picture-in-Picture
"have-local-offer" (value for RTCSignalingState WebIDL enumeration) §: Defined in WebRTC 1.0
"have-local-pranswer" (value for RTCSignalingState WebIDL enumeration) §: Defined in WebRTC 1.0
"have-remote-offer" (value for RTCSignalingState WebIDL enumeration) §: Defined in WebRTC 1.0
"have-remote-pranswer" (value for RTCSignalingState WebIDL enumeration) §: Defined in WebRTC 1.0
HDCPVersion (WebIDL enumeration for HDCPVersion ) §: Defined in Encrypted Media Extensions; Related terms: WebIDL enumeration HDCPVersion, value 1.0, value 1.1, value 1.2, value 1.3, value 1.4, value 2.0, value 2.1, value 2.2, value 2.3; see also WebIDLPedia
HDR headroom (concept) §: Defined in CSS Color HDR 1
VideoConfiguration.hdrMetadataType (WebIDL dictionary member) §: Defined in Media Capabilities
HdrMetadataType (WebIDL enumeration) §: Defined in Media Capabilities; Related terms: value smpteSt2086, value smpteSt2094-10, value smpteSt2094-40; see also WebIDLPedia
head (markup element) §: Defined in HTML; Referenced in DOM, HTML Accessibility API Mappings 1.0, ARIA in HTML; Related terms: markup attribute profile
head (markup element) §: Defined in EPUB 3.3
Document.head (WebIDL attribute) §: Defined in HTML
"head-locked" (value for XRDOMOverlayType WebIDL enumeration) §: Defined in WebXR DOM Overlays
header (concept) §: Defined in Fetch; Referenced in Compatibility, Federated Credential Management API, WebDriver BiDi, Attribution Reporting, Background Fetch, Fenced Frame, Shared Storage API, Loading Signed Exchanges, Reporting API, Service Workers, WebDriver; Related terms: concept name, concept value
header (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML, WAI-ARIA, WAI-ARIA
header list (concept) §: Defined in Fetch; Referenced in HTML, Topics API, Navigational-Tracking Mitigations, WebDriver BiDi, Attribution Reporting, Fenced Frame, Media Feeds, Protected Audience, Loading Signed Exchanges, Reporting API, XMLHttpRequest; Related terms: concept append, concept combine, concept contains, concept delete, concept extract a length, concept extract a MIME type, concept get, concept get a structured field value, concept get, decode, and split, concept set, concept set a structured field value, concept sort and combine
header list (concept for request ) §: Defined in Fetch; Referenced in Federated Credential Management API, HTML, Topics API, WebDriver BiDi, WebSockets, Attribution Reporting, Background Fetch, Client Hints Infrastructure, Document Policy, Fenced Frame, Prefetch, Private Network Access, Shared Storage API, Private State Token API, Protected Audience, Loading Signed Exchanges, Beacon, Content Security Policy: Embedded Enforcement, Content Security Policy 3, Fetch Metadata, Network Error Logging, Service Workers, Upgrade Insecure Requests, XMLHttpRequest
header list (concept for response ) §: Defined in Fetch; Referenced in Federated Credential Management API, HTML, Topics API, WebDriver BiDi, Attribution Reporting, Background Fetch, Scripting Policy, Document Policy, Fenced Frame, No-Vary-Search, Prerendering Revamped, Speculation Rules, Private Network Access, Shared Storage API, Private State Token API, Protected Audience, Loading Signed Exchanges, Clear Site Data, Content Security Policy: Embedded Enforcement, Content Security Policy 3, Network Error Logging, Payment Method Manifest, Permissions Policy, Referrer Policy, Reporting API, Service Workers, WebAssembly Web API, XMLHttpRequest
header list (concept for Headers ) §: Defined in Fetch; Referenced in Web Share Target API
header name (concept) §: Defined in Fetch; Referenced in Attribution Reporting, XMLHttpRequest
header value (concept) §: Defined in Fetch; Referenced in WebSockets, Attribution Reporting, XMLHttpRequest; Related terms: concept normalize
header-integrity (markup attribute for link ) §: Defined in Loading Signed Exchanges
RTCInboundRtpStreamStats.headerBytesReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCOutboundRtpStreamStats.headerBytesSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCRtpCapabilities.headerExtensions (WebIDL dictionary member) §: Defined in WebRTC 1.0
RTCRtpParameters.headerExtensions (WebIDL dictionary member) §: Defined in WebRTC 1.0
Headers (WebIDL interface) §: Defined in Fetch; Referenced in Background Fetch, Service Workers; Related terms: concept append, concept fill, concept guard, concept header list, new Headers(init), Headers.append(name, value), Headers.delete(name), Headers.get(name), Headers.getSetCookie(), Headers.has(name), Headers.set(name, value); see also WebIDLPedia
headers (concept for Request ) §: Defined in Fetch; Referenced in Background Fetch
headers (concept for Response ) §: Defined in Fetch; Referenced in Background Fetch
headers (markup attribute for td, th element ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
HTMLTableCellElement.headers (WebIDL attribute) §: Defined in HTML
Request.headers (WebIDL attribute) §: Defined in Fetch
RequestInit.headers (WebIDL dictionary member) §: Defined in Fetch
Response.headers (WebIDL attribute) §: Defined in Fetch
ResponseInit.headers (WebIDL dictionary member) §: Defined in Fetch
XMLHttpRequest.HEADERS_RECEIVED (WebIDL constant) §: Defined in XMLHttpRequest
new Headers(init) (WebIDL constructor) §: Defined in Fetch
HeadersInit (WebIDL type alias) §: Defined in Fetch; see also WebIDLPedia
NavigationPreloadState.headerValue (WebIDL dictionary member) §: Defined in Service Workers
GeolocationCoordinates.heading (WebIDL attribute) §: Defined in Geolocation API
GeolocationSensor.heading (WebIDL attribute) §: Defined in Geolocation Sensor
GeolocationSensorReading.heading (WebIDL dictionary member) §: Defined in Geolocation Sensor
Heading content (concept) §: Defined in HTML; Referenced in ARIA in HTML, Publication Manifest
hebrew (CSS value for <counter-style-name> ) §: Defined in CSS Counter Styles 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Inline Layout 3
height (markup attribute for embed, iframe element, img element, object element, source element, video element ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
height (markup attribute for canvas ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, WebDriver
height (markup attribute for table ) §: Defined in HTML
height (markup attribute for tbody ) §: Defined in HTML
height (markup attribute for td, th element ) §: Defined in HTML
height (markup attribute for tr ) §: Defined in HTML
height (markup attribute for model ) §: Defined in The <model> element
height (markup attribute for fencedframe ) §: Defined in Fenced Frame
height (concept for size ) §: Defined in Fenced Frame
height (CSS value for anchor-size() ) §: Defined in CSS Anchor Positioning; Referenced in CSS Paged Media 3, CSS Regions 1
height (CSS descriptor for @container ) §: Defined in CSS Containment 3
height (markup attribute for mask ) §: Defined in CSS Masking 1; Referenced in SVG 2
height (CSS property) §: Defined in CSS Sizing 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Size Adjustment 1, CSS Values 5, Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Anchor Positioning, CSS Backgrounds 3, CSS Fragmentation 3, CSS Fragmentation 4, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Containment 2, CSS Flexbox 1, CSS Grid Layout 1, CSS Images 3, CSS Inline Layout 3, CSS Logical Properties 1, CSS Multicol 1, CSS Overflow 3, CSS Overflow 4, CSS Paged Media 3, CSS Positioned Layout 3, CSS Regions 1, CSS Scroll Anchoring 1, CSS Sizing 4, CSS Table 3, CSS Transforms 1, CSS Typed OM 1, CSS User Interface 4, CSS Values 4, CSS Writing Modes 3, CSS Writing Modes 4, CSSOM, SVG 2, WebVTT: The Web Video Text Tracks Format
height (concept) §: Defined in CSS Sizing 3; Referenced in CSS Containment 3, CSS Flexbox 1, CSS Inline Layout 3
height (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
height (concept for supported open() feature name ) §: Defined in CSSOM View
height (markup attribute for filter ) §: Defined in Filter Effects 1
height (markup attribute for filter-primitive ) §: Defined in Filter Effects 1
height (markup attribute for mspace ) §: Defined in MathML Core
height (markup attribute for mpadded ) §: Defined in MathML Core
height (CSS descriptor for @media ) §: Defined in Media Queries 4 , Media Queries 5
height (concept) §: Defined in Screen Capture
height (markup attribute for pattern ) §: Defined in SVG 2
AdRender.height (WebIDL dictionary member) §: Defined in Protected Audience
CSSPositionTryDescriptors.height (WebIDL attribute) §: Defined in CSS Anchor Positioning
DocumentPictureInPictureOptions.height (WebIDL dictionary member) §: Defined in Document Picture-in-Picture
DOMRect.height (WebIDL attribute) §: Defined in Geometry Interfaces 1; Referenced in CSSOM View, WebCodecs
DOMRectInit.height (WebIDL dictionary member) §: Defined in Geometry Interfaces 1; Referenced in WebCodecs
height (WebIDL attribute for DOMRectReadOnly DOMRect ) §: Defined in Geometry Interfaces 1
DOMRectReadOnly.height (WebIDL attribute) §: Defined in Geometry Interfaces 1; Referenced in Largest Contentful Paint, WebCodecs
FontMetrics.height (WebIDL attribute) §: Defined in Font Metrics API 1
GPUExtent3DDict.height (WebIDL dictionary member) §: Defined in WebGPU
GPUTexture.height (WebIDL attribute) §: Defined in WebGPU
HTMLCanvasElement.height (WebIDL attribute) §: Defined in HTML; Referenced in WebDriver BiDi, WebGPU
HTMLEmbedElement.height (WebIDL attribute) §
HTMLIFrameElement.height (WebIDL attribute) §
HTMLObjectElement.height (WebIDL attribute) §
HTMLSourceElement.height (WebIDL attribute) §
HTMLVideoElement.height (WebIDL attribute) §: Defined in HTML
HTMLFencedFrameElement.height (WebIDL attribute) §: Defined in Fenced Frame
HTMLImageElement.height (WebIDL attribute) §: Defined in HTML
HTMLInputElement.height (WebIDL attribute) §: Defined in HTML
HTMLMarqueeElement.height (WebIDL attribute) §: Defined in HTML
HTMLTableCellElement.height (WebIDL attribute) §: Defined in HTML
ImageBitmap.height (WebIDL attribute) §: Defined in HTML; Referenced in MediaStream Image Capture, WebGPU
ImageData.height (WebIDL attribute) §: Defined in HTML; Referenced in WebGPU
MediaTrackCapabilities.height (WebIDL dictionary member) §: Defined in Media Capture and Streams
MediaTrackConstraintSet.height (WebIDL dictionary member) §: Defined in Media Capture and Streams
MediaTrackSettings.height (WebIDL dictionary member) §: Defined in Media Capture and Streams
MediaTrackSupportedConstraints.height (WebIDL dictionary member) §: Defined in Media Capture and Streams
OffscreenCanvas.height (WebIDL attribute) §: Defined in HTML; Referenced in WebGPU
PaintSize.height (WebIDL attribute) §: Defined in CSS Painting API 1
PictureInPictureWindow.height (WebIDL attribute) §: Defined in Picture-in-Picture
PointerEvent.height (WebIDL attribute) §: Defined in Pointer Events
PointerEventInit.height (WebIDL dictionary member) §: Defined in Pointer Events
RTCEncodedVideoFrameMetadata.height (WebIDL dictionary member) §: Defined in WebRTC Encoded Transform
RTCVideoSourceStats.height (WebIDL dictionary member) §: Defined in WebRTC Statistics
Screen.height (WebIDL attribute) §: Defined in CSSOM View
SVGFilterElement.height (WebIDL attribute) §: Defined in Filter Effects 1
SVGFilterPrimitiveStandardAttributes.height (WebIDL attribute) §: Defined in Filter Effects 1
SVGForeignObjectElement.height (WebIDL attribute) §: Defined in SVG 2
SVGImageElement.height (WebIDL attribute) §: Defined in SVG 2
SVGMaskElement.height (WebIDL attribute) §: Defined in CSS Masking 1
SVGPatternElement.height (WebIDL attribute) §: Defined in SVG 2
SVGRectElement.height (WebIDL attribute) §: Defined in SVG 2
SVGSVGElement.height (WebIDL attribute) §: Defined in SVG 2
SVGUseElement.height (WebIDL attribute) §: Defined in SVG 2
VideoConfiguration.height (WebIDL dictionary member) §: Defined in Media Capabilities
VideoEncoderConfig.height (WebIDL dictionary member) §: Defined in WebCodecs
VideoFrameCallbackMetadata.height (WebIDL dictionary member) §: Defined in HTMLVideoElement.requestVideoFrameCallback()
VisualViewport.height (WebIDL attribute) §: Defined in CSSOM View
XRCamera.height (WebIDL attribute) §: Defined in WebXR Raw Camera Access
XRDepthInformation.height (WebIDL attribute) §: Defined in WebXR Depth Sensing
XRMediaQuadLayerInit.height (WebIDL dictionary member) §: Defined in WebXR Layers API 1
XRQuadLayer.height (WebIDL attribute) §: Defined in WebXR Layers API 1
XRQuadLayerInit.height (WebIDL dictionary member) §: Defined in WebXR Layers API 1
XRViewport.height (WebIDL attribute) §: Defined in WebXR Device API; Referenced in WebXR Layers API 1
XRWorldMeshFeature.height (WebIDL dictionary member) §: Defined in WebXR Meshing API 1; Related terms: XRWorldMeshFeature/height.height
height (WebIDL attribute for height dictionary member of XRWorldMeshFeature dictionary ) §: Defined in WebXR Meshing API 1
LockManagerSnapshot.held (WebIDL dictionary member) §: Defined in Web Locks API
help (value for rel attribute of a, rel attribute of area element, rel attribute of form element, rel attribute of link element ) §: Defined in HTML
help (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
"hevc" (value for HevcBitstreamFormat WebIDL enumeration) §: Defined in H.265
VideoEncoderConfig.hevc (WebIDL dictionary member) §: Defined in H.265
VideoEncoderEncodeOptions.hevc (WebIDL dictionary member) §: Defined in H.265
HevcBitstreamFormat (WebIDL enumeration) §: Defined in H.265; Related terms: value annexb, value hevc; see also WebIDLPedia
HevcEncoderConfig (WebIDL dictionary) §: Defined in H.265; Related terms: HevcEncoderConfig.format; see also WebIDLPedia
hex color (concept) §: Defined in CSS Color 4
hex digit (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
<hex-color> (CSS type) §: Defined in CSS Color 4; Referenced in CSS Values 5, Federated Credential Management API, CSS Color 5, CSS Typed OM 1
hgroup (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML
Navigator.hid (WebIDL attribute) §: Defined in WebHID API
WorkerNavigator.hid (WebIDL attribute) §: Defined in WebHID API
HID (WebIDL interface) §: Defined in WebHID API; Related terms: HID.onconnect, HID.ondisconnect, HID.getDevices(), HID.requestDevice(); see also WebIDLPedia
HIDCollectionInfo (WebIDL dictionary) §: Defined in WebHID API; Related terms: HIDCollectionInfo.children, HIDCollectionInfo.featureReports, HIDCollectionInfo.inputReports, HIDCollectionInfo.outputReports, HIDCollectionInfo.type, HIDCollectionInfo.usage, HIDCollectionInfo.usagePage; see also WebIDLPedia
HIDConnectionEvent (WebIDL interface) §: Defined in WebHID API; Related terms: HIDConnectionEvent.device, WebIDL constructor constructor(); see also WebIDLPedia
HIDConnectionEventInit (WebIDL dictionary) §: Defined in WebHID API; Related terms: HIDConnectionEventInit.device; see also WebIDLPedia
hidden (CSS value for visibility ) §: Defined in CSS Display 4 , CSS Display 3 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Lists 3, CSS Overflow 3, CSS Paged Media 3
"hidden" (value for TextTrackMode WebIDL enumeration) §: Defined in HTML; Referenced in Media Source Extensions™
hidden (value for type attribute of input element ) §: Defined in HTML
hidden (markup attribute for html-global ) §: Defined in HTML; Referenced in EPUB 3.3, ARIA in HTML; Related terms: value hidden
hidden (value for hidden attribute of html-global ) §: Defined in HTML
hidden (concept for popover visibility state ) §: Defined in HTML; Referenced in Fullscreen API
hidden (CSS value for <line-style>, border property, border-bottom-style property, border-left-style property, border-right-style property, border-style property, border-top-style property ) §: Defined in CSS Backgrounds 3; Referenced in CSS Borders and Box Decorations 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Multicol 1
hidden (CSS value for content-visibility ) §: Defined in CSS Containment 2; Referenced in CSS Containment 3
hidden (CSS value for overflow, overflow-x property, overflow-y property ) §: Defined in CSS Overflow 3 , CSS 2.2; Referenced in CSS Spatial Navigation 1, CSS Overflow 4, CSS Table 3, WebVTT: The Web Video Text Tracks Format
hidden (CSS value) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
hidden (CSS value for <border-style>, border-bottom-style property, border-left-style property, border-right-style property, border-style property, border-top-style property ) §: Defined in CSS 2.2
hidden (concept for Document ) §: Defined in MiniApp Lifecycle
"hidden" (value for GlobalState WebIDL enumeration) §: Defined in MiniApp Lifecycle
"hidden" (value for PageState WebIDL enumeration) §: Defined in MiniApp Lifecycle
"hidden" (value for XRVisibilityState WebIDL enumeration) §: Defined in WebXR Device API
Hidden (state of markup element for input ) §: Defined in HTML
Document.hidden (WebIDL attribute) §: Defined in HTML; Referenced in Long Animation Frames API, Beacon, WebCodecs
HTMLElement.hidden (WebIDL attribute) §: Defined in HTML
Hidden (concept for element ) §: Defined in WAI-ARIA , WAI-ARIA
HIDDevice (WebIDL interface) §: Defined in WebHID API; Related terms: HIDDevice.collections, HIDDevice.oninputreport, HIDDevice.opened, HIDDevice.productId, HIDDevice.productName, HIDDevice.vendorId, HIDDevice.close(), HIDDevice.forget(), HIDDevice.open(), HIDDevice.receiveFeatureReport(), HIDDevice.sendFeatureReport(), HIDDevice.sendReport(); see also WebIDLPedia
HIDDeviceFilter (WebIDL dictionary) §: Defined in WebHID API; Related terms: HIDDeviceFilter.productId, HIDDeviceFilter.usage, HIDDeviceFilter.usagePage, HIDDeviceFilter.vendorId; see also WebIDLPedia
HIDDeviceRequestOptions (WebIDL dictionary) §: Defined in WebHID API; Related terms: HIDDeviceRequestOptions.exclusionFilters, HIDDeviceRequestOptions.filters; see also WebIDLPedia
"hide" (value for FullscreenNavigationUI WebIDL enumeration) §: Defined in Fullscreen API
hide (value for popovertargetaction attribute of html-global ) §: Defined in HTML
hide (CSS value for empty-cells ) §: Defined in CSS 2.2
hide all popovers until (concept) §: Defined in HTML
hide from all users (concept for element ) §: Defined in WAI-ARIA , WAI-ARIA
VirtualKeyboard.hide() (WebIDL operation) §: Defined in VirtualKeyboard API
HTMLElement.hidePopover() (WebIDL operation) §: Defined in HTML
HIDInputReportEvent (WebIDL interface) §: Defined in WebHID API; Related terms: HIDInputReportEvent.data, HIDInputReportEvent.device, HIDInputReportEvent.reportId, WebIDL constructor constructor(); see also WebIDLPedia
HIDInputReportEventInit (WebIDL dictionary) §: Defined in WebHID API; Related terms: HIDInputReportEventInit.data, HIDInputReportEventInit.device, HIDInputReportEventInit.reportId; see also WebIDLPedia
HIDReportInfo (WebIDL dictionary) §: Defined in WebHID API; Related terms: HIDReportInfo.items, HIDReportInfo.reportId; see also WebIDLPedia
HIDReportItem (WebIDL dictionary) §: Defined in WebHID API; Related terms: HIDReportItem.hasNull, HIDReportItem.hasPreferredState, HIDReportItem.isAbsolute, HIDReportItem.isArray, HIDReportItem.isBufferedBytes, HIDReportItem.isConstant, HIDReportItem.isLinear, HIDReportItem.isRange, HIDReportItem.isVolatile, HIDReportItem.logicalMaximum, HIDReportItem.logicalMinimum, HIDReportItem.physicalMaximum, HIDReportItem.physicalMinimum, HIDReportItem.reportCount, HIDReportItem.reportSize, HIDReportItem.strings, HIDReportItem.unitExponent, HIDReportItem.unitFactorCurrentExponent, HIDReportItem.unitFactorLengthExponent, HIDReportItem.unitFactorLuminousIntensityExponent, HIDReportItem.unitFactorMassExponent, HIDReportItem.unitFactorTemperatureExponent, HIDReportItem.unitFactorTimeExponent, HIDReportItem.unitSystem, HIDReportItem.usageMaximum, HIDReportItem.usageMinimum, HIDReportItem.usages, HIDReportItem.wrap; see also WebIDLPedia
HIDUnitSystem (WebIDL enumeration) §: Defined in WebHID API; Related terms: value english-linear, value english-rotation, value none, value reserved, value si-linear, value si-rotation, value vendor-defined; see also WebIDLPedia
DOMException.HIERARCHY_REQUEST_ERR (WebIDL constant) §: Defined in Web IDL
HierarchyRequestError (exception) §: Defined in Web IDL; Referenced in DOM, HTML, CSSOM
high (CSS value for dynamic-range-limit ) §: Defined in CSS Color HDR 1
"high" (value for RequestPriority WebIDL enumeration) §: Defined in Fetch
high (value for fetchpriority attribute of img element, fetchpriority attribute of link element, fetchpriority attribute of script ) §: Defined in HTML
high (markup attribute for meter ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, WAI-ARIA, WAI-ARIA
"high" (value for ImageSmoothingQuality WebIDL enumeration) §: Defined in HTML
"high" (value for ResizeQuality WebIDL enumeration) §: Defined in HTML
"high" (value for XRMeshQuality WebIDL enumeration) §: Defined in WebXR Meshing API 1
high (CSS value for voice-pitch ) §: Defined in CSS Speech 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
high (CSS value for voice-range ) §: Defined in CSS Speech 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
high (CSS value for dynamic-range descriptor of @media @rule ) §: Defined in Media Queries 5
"high" (value for RTCPriorityType WebIDL enumeration) §: Defined in WebRTC Priority Control API
HTMLMeterElement.high (WebIDL attribute) §: Defined in HTML
High Dynamic Range (concept) §: Defined in CSS Color HDR 1
high water mark (concept) §: Defined in Streams; Referenced in WebTransport
high_bitdepth (concept) §: Defined in AV1 Codec ISO Media File Format Binding
high-entropy client hint (concept) §: Defined in Client Hints Infrastructure; Referenced in User Preference Media Features Client Hints Headers
"high-performance" (value for GPUPowerPreference WebIDL enumeration) §: Defined in WebGPU
"high-performance" (value for MLPowerPreference WebIDL enumeration) §: Defined in Web Neural Network API
high-quality (CSS value for image-rendering ) §: Defined in CSS Images 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
high-surrogate code unit (concept for ECMAScript ) §: Defined in ECMAScript
ReportingBrowserSignals.highestScoringOtherBid (WebIDL dictionary member) §: Defined in Protected Audience
ReportingBrowserSignals.highestScoringOtherBidCurrency (WebIDL dictionary member) §: Defined in Protected Audience
Highlight (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
Highlight (WebIDL interface) §: Defined in CSS Custom Highlight API 1; Related terms: Highlight.priority, Highlight.type, new Highlight(...initialRanges); see also WebIDLPedia
"highlight" (value for HighlightType WebIDL enumeration) §: Defined in CSS Custom Highlight API 1
Highlight (CSS value for <color>, <system-color> type ) §: Defined in CSS Color 4; Referenced in CSS Pseudo-Elements 4
highlight pseudo-element (concept) §: Defined in CSS Pseudo-Elements 4; Referenced in CSS Custom Highlight API 1
new Highlight(...initialRanges) (WebIDL constructor) §: Defined in CSS Custom Highlight API 1
::highlight(<custom-highlight-name>) (CSS selector) §: Defined in CSS Custom Highlight API 1
HighlightRegistry (WebIDL interface) §: Defined in CSS Custom Highlight API 1; see also WebIDLPedia
highlights (WebIDL attribute for CSS ) §: Defined in CSS Custom Highlight API 1
HighlightText (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
HighlightText (CSS value for <color>, <system-color> type ) §: Defined in CSS Color 4; Referenced in CSS Pseudo-Elements 4
HighlightType (WebIDL enumeration) §: Defined in CSS Custom Highlight API 1; Related terms: value grammar-error, value highlight, value spelling-error; see also WebIDLPedia
"highpass" (value for BiquadFilterType WebIDL enumeration) §: Defined in Web Audio API
"highshelf" (value for BiquadFilterType WebIDL enumeration) §: Defined in Web Audio API
highWaterMark (concept for set up of ReadableStream interface ) §: Defined in Streams; Referenced in Direct Sockets API, MediaStreamTrack Insertable Media Processing using Streams, Service Workers, WebTransport
highWaterMark (concept for set up with byte reading support of ReadableStream interface ) §: Defined in Streams; Referenced in Direct Sockets API, Web Serial API
highWaterMark (concept for set up of WritableStream interface ) §: Defined in Streams; Referenced in File System, Direct Sockets API, Web Serial API, WebRTC Encoded Transform
ByteLengthQueuingStrategy.highWaterMark (WebIDL attribute) §: Defined in Streams
CountQueuingStrategy.highWaterMark (WebIDL attribute) §: Defined in Streams
QueuingStrategy.highWaterMark (WebIDL dictionary member) §: Defined in Streams
QueuingStrategyInit.highWaterMark (WebIDL dictionary member) §: Defined in Streams
PublicKeyCredentialCreationOptions.hints (WebIDL dictionary member) §: Defined in Web Authentication
PublicKeyCredentialCreationOptionsJSON.hints (WebIDL dictionary member) §: Defined in Web Authentication
PublicKeyCredentialRequestOptions.hints (WebIDL dictionary member) §: Defined in Web Authentication
PublicKeyCredentialRequestOptionsJSON.hints (WebIDL dictionary member) §: Defined in Web Authentication
hiragana (CSS value for <counter-style-name> ) §: Defined in CSS Counter Styles 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
hiragana-iroha (CSS value for <counter-style-name> ) §: Defined in CSS Counter Styles 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
@historical-forms (CSS @rule for @font-feature-values ) §: Defined in CSS Fonts 4; Referenced in CSS Snapshot 2023
historical-forms (CSS value for font-variant-alternates ) §: Defined in CSS Fonts 4; Referenced in CSS Snapshot 2023
<historical-lig-values> (CSS type) §: Defined in CSS Fonts 4
historical-ligatures (CSS value for font-variant-ligatures ) §: Defined in CSS Fonts 4; Referenced in CSS Snapshot 2023
CSSFontFeatureValuesRule.historicalForms (WebIDL attribute) §: Defined in CSS Fonts 4
History (WebIDL interface) §: Defined in HTML; Referenced in Fenced Frame; Related terms: History.length, History.scrollRestoration, History.state, History.back(), History.forward(), History.go(delta), History.pushState(data, unused, url), History.replaceState(data, unused, url); see also WebIDLPedia
NavigationNavigateOptions.history (WebIDL dictionary member) §: Defined in HTML
Window.history (WebIDL attribute) §: Defined in HTML
history-action activation-consuming API (concept) §: Defined in HTML
history-navigation flag (concept for request ) §: Defined in Fetch; Referenced in HTML, Prefetch
hit-testing (concept) §: Defined in SVG 2
HkdfParams (WebIDL dictionary) §: Defined in Web Cryptography API; Related terms: HkdfParams.hash, HkdfParams.info, HkdfParams.salt; see also WebIDLPedia
"hlg" (value for TransferFunction WebIDL enumeration) §: Defined in Media Capabilities
"hlg" (value for VideoTransferCharacteristics WebIDL enumeration) §: Defined in WebCodecs
hline (CSS value for shape() ) §: Defined in CSS Shapes 2
AuthenticationExtensionsClientInputs.hmacCreateSecret (WebIDL dictionary member) §: Defined in CTAP
AuthenticationExtensionsClientOutputs.hmacCreateSecret (WebIDL dictionary member) §: Defined in CTAP
AuthenticationExtensionsClientInputs.hmacGetSecret (WebIDL dictionary member) §: Defined in CTAP
AuthenticationExtensionsClientOutputs.hmacGetSecret (WebIDL dictionary member) §: Defined in CTAP
HMACGetSecretInput (WebIDL dictionary) §: Defined in CTAP; Related terms: HMACGetSecretInput.salt1, HMACGetSecretInput.salt2; see also WebIDLPedia
HMACGetSecretOutput (WebIDL dictionary) §: Defined in CTAP; Related terms: HMACGetSecretOutput.output1, HMACGetSecretOutput.output2; see also WebIDLPedia
HmacImportParams (WebIDL dictionary) §: Defined in Web Cryptography API; Related terms: HmacImportParams.hash, HmacImportParams.length; see also WebIDLPedia
HmacKeyAlgorithm (WebIDL dictionary) §: Defined in Web Cryptography API; Related terms: HmacKeyAlgorithm.hash, HmacKeyAlgorithm.length; see also WebIDLPedia
HmacKeyGenParams (WebIDL dictionary) §: Defined in Web Cryptography API; Related terms: HmacKeyGenParams.hash, HmacKeyGenParams.length; see also WebIDLPedia
hold time (concept for animation ) §: Defined in Web Animations; Referenced in Web Animations 2
holders (concept) §: Defined in Verifiable Credentials Data Model v2.0: A role an entity might perform by possessing one or more verifiable credentials and generating verifiable presentations from them. A holder is often, but not always, a subject of the verifiable credentials they are holding. Holders store their credentials in credential repositories.
home (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
"homepage" (value for ContentCategory WebIDL enumeration) §: Defined in Content Index
honeydew (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
honeydew (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
honorific-prefix (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
honorific-suffix (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
"horizontal" (value for XRPlaneOrientation WebIDL enumeration) §: Defined in WebXR Plane Detection
horizontal dimension (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
horizontal offset (CSS value for box-shadow-offset ) §: Defined in CSS Borders and Box Decorations 4
horizontal offset (concept for box-shadow ) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
horizontal typographic mode (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
horizontal writing mode (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Inline Layout 3, CSS Positioned Layout 3, CSS Ruby Annotation Layout 1
horizontal-tb (CSS value for writing-mode ) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Flexbox 1, CSS Logical Properties 1, WebVTT: The Web Video Text Tracks Format
horizontal-viewport-segments (CSS descriptor for @media ) §: Defined in Media Queries 5
:host (CSS selector) §: Defined in CSS Scoping 1; Referenced in CSS Properties and Values API 1, Selectors 4
host (concept for DocumentFragment ) §: Defined in DOM; Referenced in Fullscreen API, HTML, URL Fragment Text Directives, WebOTP API, CSS Scoping 1, EditContext API, SVG Accessibility API Mappings, SVG 2
host (concept for origin ) §: Defined in HTML; Referenced in Fetch, Topics API, Navigational-Tracking Mitigations, Network Reporting API, Attribution Reporting, User Agent Interaction with Related Website Sets, Private Network Access, Protected Audience, Loading Signed Exchanges, Clear Site Data, Secure Contexts, Web Authentication
host (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API, ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Import Attributes, JSON modules, ShadowRealm API, Source Phase Imports, Temporal
host (concept) §: Defined in URL; Referenced in Fetch, HTML, Navigational-Tracking Mitigations, Content Security Policy 3, Selection API, WebDriver; Related terms: concept equal, concept public suffix, concept registrable domain
host (concept for url ) §: Defined in URL; Referenced in Federated Credential Management API, Fetch, HTML, Topics API, URL Pattern, A Well-Known URL for Passkey Endpoints, WebDriver BiDi, WebSockets, Attribution Reporting, Cookie Store API, No-Vary-Search, Protected Audience, A Well-Known URL for Changing Passwords, Clear Site Data, Mixed Content, Referrer Policy, Upgrade Insecure Requests, Web Authentication, XMLHttpRequest
"host" (value for RTCIceCandidateType WebIDL enumeration) §: Defined in WebRTC 1.0
HTMLHyperlinkElementUtils.host (WebIDL attribute) §: Defined in HTML
Location.host (WebIDL attribute) §: Defined in HTML
ShadowRoot.host (WebIDL attribute) §: Defined in DOM
host (WebIDL attribute for URL ) §: Defined in URL; Referenced in Private Network Access, Content Security Policy 3
WorkerLocation.host (WebIDL attribute) §: Defined in HTML
host environment (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API, Import Attributes, JSON modules, ShadowRealm API, Source Phase Imports, Temporal
host hook (concept for ECMAScript ) §: Defined in ECMAScript
host parser (concept) §: Defined in URL; Referenced in HTML
host state (concept for basic URL parser ) §: Defined in URL; Referenced in HTML
host syntax (concept) §: Defined in CSS Color 4
host-char (grammar) §: Defined in Content Security Policy 3
:host-context() (CSS selector) §: Defined in CSS Scoping 1; Referenced in Selectors 4
host-defined (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in Import Attributes, JSON modules, ShadowRealm API, Source Phase Imports, Temporal
host-including inclusive ancestor (concept) §: Defined in DOM
host-part (grammar) §: Defined in Content Security Policy 3; Referenced in Content Security Policy: Embedded Enforcement
host-part match (concept) §: Defined in Content Security Policy 3; Referenced in Content Security Policy: Embedded Enforcement
host-source (grammar) §: Defined in Content Security Policy 3; Referenced in Fenced Frame, Content Security Policy: Embedded Enforcement, Permissions Policy
:host() (CSS selector) §: Defined in CSS Scoping 1
HostCallJobCallback (algorithm) §: Defined in ECMAScript; Referenced in HTML, Source Phase Imports
HostEnqueueFinalizationRegistryCleanupJob (algorithm) §: Defined in ECMAScript; Referenced in HTML, Source Phase Imports
HostEnqueueGenericJob (algorithm) §: Defined in ECMAScript; Referenced in HTML
HostEnqueuePromiseJob (algorithm) §: Defined in ECMAScript; Referenced in HTML, Source Phase Imports
HostEnqueueTimeoutJob (algorithm) §: Defined in ECMAScript; Referenced in HTML
HostEnsureCanAddPrivateElement (algorithm) §: Defined in ECMAScript; Referenced in HTML
HostEnsureCanCompileStrings (algorithm) §: Defined in ECMAScript; Referenced in HTML, ShadowRealm API, Source Phase Imports, Trusted Types
HostEnsureCanCompileWasmBytes() (algorithm) §: Defined in WebAssembly JavaScript Interface: Content Security Policy
HostEventSet (algorithm) §: Defined in ECMAScript
HostFinalizeImportMeta (algorithm) §: Defined in ECMAScript; Referenced in Source Phase Imports
HostGetImportMetaProperties (algorithm) §: Defined in ECMAScript; Referenced in HTML, Source Phase Imports
HostGrowSharedArrayBuffer (algorithm) §: Defined in ECMAScript
HostHasSourceTextAvailable (algorithm) §: Defined in ECMAScript; Referenced in Source Phase Imports
HostLoadImportedModule (algorithm) §: Defined in ECMAScript; Referenced in ShadowRealm API
HostMakeJobCallback (algorithm) §: Defined in ECMAScript; Referenced in HTML, Source Phase Imports
hostname (concept for state of constructor string parser ) §: Defined in URL Pattern
HTMLHyperlinkElementUtils.hostname (WebIDL attribute) §: Defined in HTML
Location.hostname (WebIDL attribute) §: Defined in HTML
hostname (WebIDL attribute for URL ) §: Defined in URL
URLPattern.hostname (WebIDL attribute) §: Defined in URL Pattern
URLPatternInit.hostname (WebIDL dictionary member) §: Defined in URL Pattern
URLPatternResult.hostname (WebIDL dictionary member) §: Defined in URL Pattern
WorkerLocation.hostname (WebIDL attribute) §: Defined in HTML
hostname IPv6 bracket depth (concept for constructor string parser ) §: Defined in URL Pattern
hostname state (concept for basic URL parser ) §: Defined in URL; Referenced in HTML, URL Pattern
HostPromiseRejectionTracker (algorithm) §: Defined in ECMAScript; Referenced in HTML, Source Phase Imports
HostResizeArrayBuffer (algorithm) §: Defined in ECMAScript
hotpink (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
hotpink (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
HourFromTime (algorithm) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API, Temporal
:hover (CSS selector) §: Defined in CSS 2.2 , Selectors 3 , Selectors 4; Referenced in CSS Linked Parameters, Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Shadow Parts
hover (CSS descriptor for @media ) §: Defined in Media Queries 4 , Media Queries 5; Related terms: CSS value hover, CSS value none
hover (CSS value for hover descriptor of @media @rule ) §: Defined in Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
hr (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML, WAI-ARIA, WAI-ARIA; Related terms: markup attribute align, markup attribute color, markup attribute noshade, markup attribute size, markup attribute width
href (markup attribute for base ) §: Defined in HTML; Referenced in Content Security Policy 3
href (markup attribute for link ) §: Defined in HTML; Referenced in Loading Signed Exchanges, Web Application Manifest, HTML Accessibility API Mappings 1.0
href (markup attribute for a, area element ) §: Defined in HTML , SVG 2; Referenced in Speculation Rules, EPUB 3.3, HTML Accessibility API Mappings 1.0, ARIA in HTML, Selectors 4
href (markup attribute for animate ) §: Defined in SVG Animations 2; Referenced in SVG Animations 2, SVG 2
href (markup attribute for mpath ) §: Defined in SVG Animations 2; Referenced in SVG 2
href (markup attribute for feImage ) §: Defined in Filter Effects 1
href (markup attribute for use ) §: Defined in SVG 2
href (markup attribute for textPath ) §: Defined in SVG 2
href (markup attribute for image ) §: Defined in SVG 2
href (markup attribute for linearGradient ) §: Defined in SVG 2
href (markup attribute for radialGradient ) §: Defined in SVG 2
href (markup attribute for pattern ) §: Defined in SVG 2
href (markup attribute for script ) §: Defined in SVG 2
CSSImportRule.href (WebIDL attribute) §: Defined in CSSOM
HTMLBaseElement.href (WebIDL attribute) §: Defined in HTML
HTMLHyperlinkElementUtils.href (WebIDL attribute) §: Defined in HTML; Referenced in Speculation Rules
HTMLLinkElement.href (WebIDL attribute) §: Defined in HTML
Location.href (WebIDL attribute) §: Defined in HTML
StyleSheet.href (WebIDL attribute) §: Defined in CSSOM
SVGURIReference.href (WebIDL attribute) §: Defined in SVG 2
href (WebIDL attribute for URL ) §: Defined in URL
WorkerLocation.href (WebIDL attribute) §: Defined in HTML
hreflang (markup attribute for link ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
hreflang (markup attribute for a, area element ) §: Defined in HTML , SVG 2; Referenced in HTML Accessibility API Mappings 1.0, SVG 2
hreflang (markup attribute for area ) §: Defined in HTML
HTMLAnchorElement.hreflang (WebIDL attribute) §: Defined in HTML
HTMLLinkElement.hreflang (WebIDL attribute) §: Defined in HTML
SVGAElement.hreflang (WebIDL attribute) §: Defined in SVG 2
"HRTF" (value for PanningModelType WebIDL enumeration) §: Defined in Web Audio API
HSL (CSS value for hsl() ) §: Defined in CSS Color 4; Referenced in CSS Color 5
hsl() (CSS function) §: Defined in CSS Color 4; Referenced in Federated Credential Management API, CSS Color 5, CSS Typed OM 1, CSS Values 3, CSS Values 4; Related terms: CSS value alpha, CSS value h, CSS value HSL, CSS value l, CSS value s
hsla() (CSS function) §: Defined in CSS Color 4; Referenced in CSS Color 5, CSS Typed OM 1
hspace (markup attribute for embed ) §: Defined in HTML
hspace (markup attribute for iframe ) §: Defined in HTML
hspace (markup attribute for input ) §: Defined in HTML
hspace (markup attribute for img ) §: Defined in HTML
hspace (markup attribute for object ) §: Defined in HTML
HTMLImageElement.hspace (WebIDL attribute) §: Defined in HTML
HTMLMarqueeElement.hspace (WebIDL attribute) §: Defined in HTML
HTMLObjectElement.hspace (WebIDL attribute) §: Defined in HTML
HSTS-safe origin (concept) §: Defined in Upgrade Insecure Requests
html (markup element) §: Defined in HTML; Referenced in DOM, CSS Display 4, Quirks Mode, Manifest Incubations, CSS Containment 1, CSS Containment 2, CSS Display 3, CSS Overflow 3, EPUB 3.3, HTML Accessibility API Mappings 1.0, ARIA in HTML, Selectors 4; Related terms: markup attribute manifest, markup attribute version
HTML document (concept) §: Defined in DOM; Referenced in HTML, Document Policy, XMLHttpRequest
HTML elements (concept) §: Defined in HTML; Referenced in CSS Animations 1, CSS Transitions, CSSOM, CSSOM View, HTML Accessibility API Mappings 1.0, ARIA in HTML, Selection API, WebVTT: The Web Video Text Tracks Format
HTML fragment serialization algorithm (concept) §: Defined in HTML
HTML MIME type (concept) §: Defined in MIME Sniffing; Referenced in HTML, XMLHttpRequest
HTML namespace (concept) §: Defined in Infra; Referenced in DOM, Fullscreen API, HTML, Portals, HTML Sanitizer API, URL Fragment Text Directives, EPUB 3.3, Trusted Types, WebVTT: The Web Video Text Tracks Format
HTML parser (concept) §: Defined in HTML; Referenced in DOM
HTMLAllCollection (WebIDL interface) §: Defined in HTML; Referenced in Web IDL, WebDriver; Related terms: HTMLAllCollection.length, HTMLAllCollection.item(nameOrIndex), HTMLAllCollection.namedItem(name); see also WebIDLPedia
HTMLAnchorElement (WebIDL interface) §: Defined in HTML; Referenced in DOM, Private Click Measurement, Attribution Reporting; Related terms: HTMLAnchorElement.attributionDestination, HTMLAnchorElement.attributionSourceId, HTMLAnchorElement.charset, HTMLAnchorElement.coords, HTMLAnchorElement.download, HTMLAnchorElement.hreflang, HTMLAnchorElement.name, HTMLAnchorElement.ping, HTMLAnchorElement.referrerPolicy, HTMLAnchorElement.rel, HTMLAnchorElement.relList, HTMLAnchorElement.rev, HTMLAnchorElement.shape, HTMLAnchorElement.target, HTMLAnchorElement.text, HTMLAnchorElement.type; see also WebIDLPedia
HTMLAreaElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLAreaElement.alt, HTMLAreaElement.coords, HTMLAreaElement.download, HTMLAreaElement.noHref, HTMLAreaElement.ping, HTMLAreaElement.referrerPolicy, HTMLAreaElement.rel, HTMLAreaElement.relList, HTMLAreaElement.shape, HTMLAreaElement.target; see also WebIDLPedia
HTMLAttributionSrcElementUtils (WebIDL interface) §: Defined in Attribution Reporting; Related terms: HTMLAttributionSrcElementUtils.attributionSrc; see also WebIDLPedia
HTMLAudioElement (WebIDL interface) §: Defined in HTML; Referenced in URL Fragment Text Directives, Autoplay Policy Detection, Media Capture and Streams; see also WebIDLPedia
HTMLBaseElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLBaseElement.href, HTMLBaseElement.target; see also WebIDLPedia
HTMLBodyElement (WebIDL interface) §: Defined in HTML; Referenced in Compatibility; Related terms: HTMLBodyElement.aLink, HTMLBodyElement.background, HTMLBodyElement.bgColor, HTMLBodyElement.link, HTMLBodyElement.onorientationchange, HTMLBodyElement.text, HTMLBodyElement.vLink; see also WebIDLPedia
HTMLBRElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLBRElement.clear; see also WebIDLPedia
HTMLButtonElement (WebIDL interface) §: Defined in HTML; Referenced in Contact Picker API; Related terms: undefineddisabled, undefinedform, undefinedformAction, undefinedformEnctype, undefinedformMethod, undefinedformNoValidate, undefinedformTarget, undefinedlabels, undefinedname, HTMLButtonElement.type, undefinedvalidationMessage, undefinedvalidity, HTMLButtonElement.value, undefinedwillValidate, undefinedcheckValidity(), undefinedreportValidity(), undefinedsetCustomValidity(error); see also WebIDLPedia
HTMLCanvasElement (WebIDL interface) §: Defined in HTML; Referenced in WebDriver BiDi, Accelerated Shape Detection in Images, Media Capture from DOM Elements, WebCodecs, WebGPU, WebXR Device API; Related terms: HTMLCanvasElement.height, HTMLCanvasElement.width, HTMLCanvasElement.captureStream(), HTMLCanvasElement.getContext(contextId, options), HTMLCanvasElement.toBlob(callback, type, quality), HTMLCanvasElement.toDataURL(type, quality), HTMLCanvasElement.transferControlToOffscreen(); see also WebIDLPedia
HTMLCollection (WebIDL interface) §: Defined in DOM; Referenced in WebDriver BiDi, WebDriver; Related terms: HTMLCollection.length, HTMLCollection.item(index), HTMLCollection.namedItem(key), HTMLCollection.namedItem(name); see also WebIDLPedia
HTMLConstructor (WebIDL extended attribute) §: Defined in HTML; Referenced in Fenced Frame, Portals
HTMLDataElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLDataElement.value; see also WebIDLPedia
HTMLDataListElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLDataListElement.options; see also WebIDLPedia
HTMLDetailsElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLDetailsElement.name, HTMLDetailsElement.open; see also WebIDLPedia
HTMLDialogElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLDialogElement.open, HTMLDialogElement.returnValue, HTMLDialogElement.close(returnValue), HTMLDialogElement.show(), HTMLDialogElement.showModal(); see also WebIDLPedia
HTMLDirectoryElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLDirectoryElement.compact; see also WebIDLPedia
HTMLDivElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLDivElement.align; see also WebIDLPedia
HTMLDListElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLDListElement.compact; see also WebIDLPedia
HTMLElement (WebIDL interface) §: Defined in HTML; Referenced in DOM, The <model> element, Fenced Frame, Measure Memory API, Portals, CSS Typed OM 1, CSSOM, CSSOM View, EditContext API, XMLHttpRequest; Related terms: HTMLElement.accessKey, HTMLElement.accessKeyLabel, HTMLElement.autocapitalize, HTMLElement.dir, HTMLElement.draggable, HTMLElement.editContext, HTMLElement.hidden, HTMLElement.innerText, HTMLElement.lang, HTMLElement.offsetHeight, HTMLElement.offsetLeft, HTMLElement.offsetParent, HTMLElement.offsetTop, HTMLElement.offsetWidth, undefinedonabort, undefinedonauxclick, undefinedonbeforeinput, undefinedonbeforematch, undefinedonbeforetoggle, undefinedoncancel, undefinedoncanplay, undefinedoncanplaythrough, undefinedonchange, undefinedonclick, undefinedonclose, undefinedoncontextlost, undefinedoncontextmenu, undefinedoncontextrestored, undefinedoncopy, undefinedoncuechange, undefinedoncut, undefinedondblclick, undefinedondrag, undefinedondragend, undefinedondragenter, undefinedondragleave, undefinedondragover, undefinedondragstart, undefinedondrop, undefinedondurationchange, undefinedonemptied, undefinedonended, undefinedonformdata, undefinedoninput, undefinedoninvalid, undefinedonkeydown, undefinedonkeypress, undefinedonkeyup, undefinedonloadeddata, undefinedonloadedmetadata, undefinedonloadstart, undefinedonmousedown, undefinedonmouseenter, undefinedonmouseleave, undefinedonmousemove, undefinedonmouseout, undefinedonmouseover, undefinedonmouseup, undefinedonpaste, undefinedonpause, undefinedonplay, undefinedonplaying, undefinedonprogress, undefinedonratechange, undefinedonreset, undefinedonscrollend, undefinedonsecuritypolicyviolation, undefinedonseeked, undefinedonseeking, undefinedonselect, undefinedonslotchange, undefinedonstalled, undefinedonsubmit, undefinedonsuspend, undefinedontimeupdate, undefinedontoggle, undefinedonvolumechange, undefinedonwaiting, undefinedonwebkitanimationend, undefinedonwebkitanimationiteration, undefinedonwebkitanimationstart, undefinedonwebkittransitionend, undefinedonwheel, HTMLElement.outerText, HTMLElement.popover, HTMLElement.popoverTargetAction, HTMLElement.popoverTargetElement, HTMLElement.spellcheck, HTMLElement.title, HTMLElement.translate, HTMLElement.writingSuggestions, event beforematch, event beforetoggle, event blur, event cancel, event change, event close, event contextlost, event contextrestored, event error, event focus, event formdata, event invalid, event load, event reset, event select, event submit, event toggle, HTMLElement.attachInternals(), HTMLElement.click(), HTMLElement.hidePopover(), HTMLElement.showPopover(), HTMLElement.togglePopover(force); see also WebIDLPedia
HTMLEmbedElement (WebIDL interface) §: Defined in HTML; Referenced in SVG 2; Related terms: HTMLEmbedElement.align, undefinedheight, HTMLEmbedElement.name, HTMLEmbedElement.src, HTMLEmbedElement.type, undefinedwidth, undefinedgetSVGDocument(); see also WebIDLPedia
HTMLFencedFrameElement (WebIDL interface) §: Defined in Fenced Frame; Related terms: HTMLFencedFrameElement.allow, HTMLFencedFrameElement.config, HTMLFencedFrameElement.height, HTMLFencedFrameElement.width, new HTMLFencedFrameElement(); see also WebIDLPedia
new HTMLFencedFrameElement() (WebIDL constructor) §: Defined in Fenced Frame
HTMLFieldSetElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLFieldSetElement.disabled, HTMLFieldSetElement.elements, undefinedform, undefinedname, HTMLFieldSetElement.type, undefinedvalidationMessage, undefinedvalidity, undefinedwillValidate, undefinedcheckValidity(), undefinedreportValidity(), undefinedsetCustomValidity(error); see also WebIDLPedia
HTMLFontElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLFontElement.color, HTMLFontElement.face, HTMLFontElement.size; see also WebIDLPedia
HTMLLabelElement.htmlFor (WebIDL attribute) §: Defined in HTML
HTMLOutputElement.htmlFor (WebIDL attribute) §: Defined in HTML
HTMLScriptElement.htmlFor (WebIDL attribute) §: Defined in HTML
HTMLFormControlsCollection (WebIDL interface) §: Defined in HTML; Referenced in WebDriver; Related terms: HTMLFormControlsCollection.namedItem(name); see also WebIDLPedia
HTMLFormElement (WebIDL interface) §: Defined in HTML; Referenced in Credential Management 1, XMLHttpRequest; Related terms: HTMLFormElement.acceptCharset, HTMLFormElement.action, HTMLFormElement.autocomplete, HTMLFormElement.elements, HTMLFormElement.encoding, HTMLFormElement.enctype, HTMLFormElement.length, HTMLFormElement.method, HTMLFormElement.name, HTMLFormElement.noValidate, HTMLFormElement.rel, HTMLFormElement.relList, HTMLFormElement.target, HTMLFormElement.checkValidity(), HTMLFormElement.reportValidity(), HTMLFormElement.requestSubmit(submitter), HTMLFormElement.reset(), HTMLFormElement.submit(); see also WebIDLPedia
HTMLFrameElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLFrameElement.contentDocument, HTMLFrameElement.contentWindow, HTMLFrameElement.frameBorder, HTMLFrameElement.longDesc, HTMLFrameElement.marginHeight, HTMLFrameElement.marginWidth, HTMLFrameElement.name, HTMLFrameElement.noResize, HTMLFrameElement.scrolling, HTMLFrameElement.src; see also WebIDLPedia
HTMLFrameSetElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLFrameSetElement.cols, HTMLFrameSetElement.rows; see also WebIDLPedia
HTMLHeadElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLHeadElement.profile; see also WebIDLPedia
HTMLHeadingElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLHeadingElement.align; see also WebIDLPedia
HTMLHRElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLHRElement.align, HTMLHRElement.color, HTMLHRElement.noShade, HTMLHRElement.size, HTMLHRElement.width; see also WebIDLPedia
HTMLHtmlElement (WebIDL interface) §: Defined in HTML; Referenced in DOM; Related terms: HTMLHtmlElement.version; see also WebIDLPedia
HTMLHyperlinkElementUtils (WebIDL interface) §: Defined in HTML; Referenced in Private Click Measurement, Speculation Rules, SVG 2; Related terms: HTMLHyperlinkElementUtils.hash, HTMLHyperlinkElementUtils.host, HTMLHyperlinkElementUtils.hostname, HTMLHyperlinkElementUtils.href, HTMLHyperlinkElementUtils.origin, HTMLHyperlinkElementUtils.password, HTMLHyperlinkElementUtils.pathname, HTMLHyperlinkElementUtils.port, HTMLHyperlinkElementUtils.protocol, HTMLHyperlinkElementUtils.search, HTMLHyperlinkElementUtils.username; see also WebIDLPedia
HTMLIFrameElement (WebIDL interface) §: Defined in HTML; Referenced in Topics API, Iframe credentialless, Document Picture-in-Picture, URL Fragment Text Directives, Shared Storage API, Private State Token API, Protected Audience, Content Security Policy: Embedded Enforcement, Permissions Policy, SVG 2, Trusted Types, WebXR DOM Overlays; Related terms: HTMLIFrameElement.adAuctionHeaders, HTMLIFrameElement.align, HTMLIFrameElement.allow, HTMLIFrameElement.allowFullscreen, HTMLIFrameElement.browsingTopics, HTMLIFrameElement.contentDocument, HTMLIFrameElement.contentWindow, HTMLIFrameElement.credentialless, HTMLIFrameElement.csp, HTMLIFrameElement.frameBorder, undefinedheight, HTMLIFrameElement.loading, HTMLIFrameElement.longDesc, HTMLIFrameElement.marginHeight, HTMLIFrameElement.marginWidth, HTMLIFrameElement.name, HTMLIFrameElement.permissionsPolicy, HTMLIFrameElement.privateToken, HTMLIFrameElement.referrerPolicy, HTMLIFrameElement.sandbox, HTMLIFrameElement.scrolling, HTMLIFrameElement.src, HTMLIFrameElement.srcdoc, undefinedwidth, undefinedgetSVGDocument(); see also WebIDLPedia
HTMLImageElement (WebIDL interface) §: Defined in HTML; Referenced in Attribution Reporting, URL Fragment Text Directives, Accelerated Shape Detection in Images, Shared Storage API, Contact Picker API, CSSOM View, Paint Timing, WebCodecs, WebGPU; Related terms: HTMLImageElement.align, HTMLImageElement.alt, HTMLImageElement.border, HTMLImageElement.complete, HTMLImageElement.crossOrigin, HTMLImageElement.currentSrc, HTMLImageElement.decoding, HTMLImageElement.fetchPriority, HTMLImageElement.height, HTMLImageElement.hspace, HTMLImageElement.isMap, HTMLImageElement.loading, HTMLImageElement.longDesc, HTMLImageElement.lowsrc, HTMLImageElement.name, HTMLImageElement.naturalHeight, HTMLImageElement.naturalWidth, HTMLImageElement.referrerPolicy, HTMLImageElement.sizes, HTMLImageElement.src, HTMLImageElement.srcset, HTMLImageElement.useMap, HTMLImageElement.vspace, HTMLImageElement.width, HTMLImageElement.x, HTMLImageElement.y, HTMLImageElement.decode(); see also WebIDLPedia
HTMLInputElement (WebIDL interface) §: Defined in HTML; Referenced in WebDriver BiDi, File and Directory Entries API, File API, HTML Media Capture; Related terms: HTMLInputElement.accept, HTMLInputElement.align, HTMLInputElement.alt, undefinedautocomplete, HTMLInputElement.capture, HTMLInputElement.checked, HTMLInputElement.defaultChecked, HTMLInputElement.defaultValue, HTMLInputElement.dirName, undefineddisabled, HTMLInputElement.files, undefinedform, undefinedformAction, undefinedformEnctype, undefinedformMethod, undefinedformNoValidate, undefinedformTarget, HTMLInputElement.height, HTMLInputElement.indeterminate, undefinedlabels, HTMLInputElement.list, HTMLInputElement.max, HTMLInputElement.maxLength, HTMLInputElement.min, HTMLInputElement.minLength, HTMLInputElement.multiple, undefinedname, HTMLInputElement.pattern, HTMLInputElement.placeholder, HTMLInputElement.readOnly, HTMLInputElement.required, undefinedselectionDirection, undefinedselectionEnd, undefinedselectionStart, HTMLInputElement.size, HTMLInputElement.src, HTMLInputElement.step, HTMLInputElement.type, HTMLInputElement.useMap, undefinedvalidationMessage, undefinedvalidity, HTMLInputElement.value, HTMLInputElement.valueAsDate, HTMLInputElement.valueAsNumber, HTMLInputElement.webkitdirectory, HTMLInputElement.webkitEntries, HTMLInputElement.width, undefinedwillValidate, undefinedcheckValidity(), undefinedreportValidity(), undefinedselect(), undefinedsetCustomValidity(error), undefinedsetRangeText(replacement, start, end, selectMode), undefinedsetSelectionRange(start, end, direction), HTMLInputElement.showPicker(), HTMLInputElement.stepDown(n), HTMLInputElement.stepUp(n); see also WebIDLPedia
HTMLLabelElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLLabelElement.control, HTMLLabelElement.form, HTMLLabelElement.htmlFor; see also WebIDLPedia
HTMLLegendElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLLegendElement.align, HTMLLegendElement.form; see also WebIDLPedia
HTMLLIElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLLIElement.type, HTMLLIElement.value; see also WebIDLPedia
HTMLLinkElement (WebIDL interface) §: Defined in HTML; Referenced in CSS View Transitions 2; Related terms: HTMLLinkElement.as, HTMLLinkElement.blocking, HTMLLinkElement.charset, HTMLLinkElement.crossOrigin, HTMLLinkElement.disabled, HTMLLinkElement.fetchPriority, HTMLLinkElement.href, HTMLLinkElement.hreflang, HTMLLinkElement.imageSizes, HTMLLinkElement.imageSrcset, HTMLLinkElement.integrity, HTMLLinkElement.media, HTMLLinkElement.referrerPolicy, HTMLLinkElement.rel, HTMLLinkElement.relList, HTMLLinkElement.rev, HTMLLinkElement.sizes, HTMLLinkElement.target, HTMLLinkElement.type; see also WebIDLPedia
HTMLMapElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLMapElement.areas, HTMLMapElement.name; see also WebIDLPedia
HTMLMarqueeElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLMarqueeElement.behavior, HTMLMarqueeElement.bgColor, HTMLMarqueeElement.direction, HTMLMarqueeElement.height, HTMLMarqueeElement.hspace, HTMLMarqueeElement.loop, HTMLMarqueeElement.scrollAmount, HTMLMarqueeElement.scrollDelay, HTMLMarqueeElement.trueSpeed, HTMLMarqueeElement.vspace, HTMLMarqueeElement.width, HTMLMarqueeElement.start(), HTMLMarqueeElement.stop(); see also WebIDLPedia
HTMLMediaElement (WebIDL interface) §: Defined in HTML; Referenced in Prerendering Revamped, Page Lifecycle, Audio Output Devices API, Autoplay Policy Detection, Encrypted Media Extensions, Media Source Extensions™, Media Capture from DOM Elements, Media Capture and Streams, Open Screen Protocol, Remote Playback API, Web Audio API, WebCodecs, WebGPU; Related terms: concept effective media volume, concept media data, HTMLMediaElement.audioTracks, HTMLMediaElement.autoplay, HTMLMediaElement.buffered, HTMLMediaElement.controls, HTMLMediaElement.crossOrigin, HTMLMediaElement.currentSrc, HTMLMediaElement.currentTime, HTMLMediaElement.defaultMuted, HTMLMediaElement.defaultPlaybackRate, HTMLMediaElement.disableRemotePlayback, HTMLMediaElement.duration, HTMLMediaElement.ended, HTMLMediaElement.error, HTMLMediaElement.loop, HTMLMediaElement.mediaKeys, HTMLMediaElement.muted, HTMLMediaElement.networkState, HTMLMediaElement.onencrypted, HTMLMediaElement.onwaitingforkey, HTMLMediaElement.paused, HTMLMediaElement.playbackRate, HTMLMediaElement.played, HTMLMediaElement.preload, HTMLMediaElement.preservesPitch, HTMLMediaElement.readyState, HTMLMediaElement.remote, HTMLMediaElement.seekable, HTMLMediaElement.seeking, HTMLMediaElement.sinkId, HTMLMediaElement.src, HTMLMediaElement.srcObject, HTMLMediaElement.textTracks, HTMLMediaElement.videoTracks, HTMLMediaElement.volume, HTMLMediaElement.HAVE_CURRENT_DATA, HTMLMediaElement.HAVE_ENOUGH_DATA, HTMLMediaElement.HAVE_FUTURE_DATA, HTMLMediaElement.HAVE_METADATA, HTMLMediaElement.HAVE_NOTHING, HTMLMediaElement.NETWORK_EMPTY, HTMLMediaElement.NETWORK_IDLE, HTMLMediaElement.NETWORK_LOADING, HTMLMediaElement.NETWORK_NO_SOURCE, event abort, event canplay, event canplaythrough, event durationchange, event emptied, event ended, event error, event loadeddata, event loadedmetadata, event loadstart, event pause, event play, event playing, event progress, event ratechange, event resize, event seeked, event seeking, event stalled, event suspend, event timeupdate, event volumechange, event waiting, HTMLMediaElement.addTextTrack(kind, label, language), HTMLMediaElement.canPlayType(type), HTMLMediaElement.captureStream(), HTMLMediaElement.fastSeek(time), HTMLMediaElement.getStartDate(), HTMLMediaElement.load(), HTMLMediaElement.pause(), HTMLMediaElement.play(), HTMLMediaElement.setMediaKeys(), HTMLMediaElement.setSinkId(); see also WebIDLPedia
HTMLMenuElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLMenuElement.compact; see also WebIDLPedia
HTMLMetaElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLMetaElement.content, HTMLMetaElement.httpEquiv, HTMLMetaElement.media, HTMLMetaElement.name, HTMLMetaElement.scheme; see also WebIDLPedia
HTMLMeterElement (WebIDL interface) §: Defined in HTML; Referenced in URL Fragment Text Directives; Related terms: HTMLMeterElement.high, undefinedlabels, HTMLMeterElement.low, HTMLMeterElement.max, HTMLMeterElement.min, HTMLMeterElement.optimum, HTMLMeterElement.value; see also WebIDLPedia
HTMLModelElement (WebIDL interface) §: Defined in The <model> element; see also WebIDLPedia
HTMLModElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLModElement.cite, HTMLModElement.dateTime; see also WebIDLPedia
HTMLObjectElement (WebIDL interface) §: Defined in HTML; Referenced in URL Fragment Text Directives, SVG 2; Related terms: HTMLObjectElement.align, HTMLObjectElement.archive, HTMLObjectElement.border, HTMLObjectElement.code, HTMLObjectElement.codeBase, HTMLObjectElement.codeType, HTMLObjectElement.contentDocument, HTMLObjectElement.contentWindow, HTMLObjectElement.data, HTMLObjectElement.declare, undefinedform, undefinedheight, HTMLObjectElement.hspace, HTMLObjectElement.name, HTMLObjectElement.standby, HTMLObjectElement.type, HTMLObjectElement.useMap, undefinedvalidationMessage, undefinedvalidity, HTMLObjectElement.vspace, undefinedwidth, undefinedwillValidate, undefinedcheckValidity(), undefinedgetSVGDocument(), undefinedreportValidity(), undefinedsetCustomValidity(error); see also WebIDLPedia
HTMLOListElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLOListElement.compact, HTMLOListElement.reversed, HTMLOListElement.start, HTMLOListElement.type; see also WebIDLPedia
HTMLOptGroupElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLOptGroupElement.disabled, HTMLOptGroupElement.label; see also WebIDLPedia
HTMLOptionElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLOptionElement.defaultSelected, HTMLOptionElement.disabled, HTMLOptionElement.form, HTMLOptionElement.index, HTMLOptionElement.label, HTMLOptionElement.selected, HTMLOptionElement.text, HTMLOptionElement.value, new Option(text, value, defaultSelected, selected); see also WebIDLPedia
HTMLOptionsCollection (WebIDL interface) §: Defined in HTML; Referenced in WebDriver; Related terms: HTMLOptionsCollection.length, HTMLOptionsCollection.selectedIndex, HTMLOptionsCollection.add(element, before), HTMLOptionsCollection.remove(index); see also WebIDLPedia
HTMLOrSVGElement (WebIDL interface) §: Defined in HTML; Referenced in MathML Core, SVG 2; Related terms: HTMLOrSVGElement.autofocus, HTMLOrSVGElement.[[CryptographicNonce]], HTMLOrSVGElement.dataset, HTMLOrSVGElement.nonce, HTMLOrSVGElement.tabIndex, HTMLOrSVGElement.blur(), HTMLOrSVGElement.focus(options); see also WebIDLPedia
HTMLOrSVGImageElement (WebIDL type alias) §: Defined in HTML; see also WebIDLPedia
HTMLOrSVGScriptElement (WebIDL type alias) §: Defined in HTML; see also WebIDLPedia
HTMLOutputElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLOutputElement.defaultValue, undefinedform, HTMLOutputElement.htmlFor, undefinedlabels, undefinedname, HTMLOutputElement.type, undefinedvalidationMessage, undefinedvalidity, HTMLOutputElement.value, undefinedwillValidate, undefinedcheckValidity(), undefinedreportValidity(), undefinedsetCustomValidity(error); see also WebIDLPedia
HTMLParagraphElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLParagraphElement.align; see also WebIDLPedia
HTMLParamElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLParamElement.name, HTMLParamElement.type, HTMLParamElement.value, HTMLParamElement.valueType; see also WebIDLPedia
HTMLPictureElement (WebIDL interface) §: Defined in HTML; see also WebIDLPedia
HTMLPortalElement (WebIDL interface) §: Defined in Portals; Related terms: HTMLPortalElement.onmessage, HTMLPortalElement.onmessageerror, HTMLPortalElement.referrerPolicy, HTMLPortalElement.src, new HTMLPortalElement(), event message, event messageerror, HTMLPortalElement.activate(options), HTMLPortalElement.postMessage(message, options); see also WebIDLPedia
new HTMLPortalElement() (WebIDL constructor) §: Defined in Portals
HTMLPreElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLPreElement.width; see also WebIDLPedia
HTMLProgressElement (WebIDL interface) §: Defined in HTML; Referenced in URL Fragment Text Directives; Related terms: undefinedlabels, HTMLProgressElement.max, HTMLProgressElement.position, HTMLProgressElement.value; see also WebIDLPedia
HTMLQuoteElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLQuoteElement.cite; see also WebIDLPedia
HTMLScriptElement (WebIDL interface) §: Defined in HTML; Referenced in DOM, Attribution Reporting, Scripting Policy, Speculation Rules, URL Fragment Text Directives, Trusted Types; Related terms: concept script text, HTMLScriptElement.async, HTMLScriptElement.blocking, HTMLScriptElement.charset, HTMLScriptElement.crossOrigin, HTMLScriptElement.defer, HTMLScriptElement.event, HTMLScriptElement.fetchPriority, HTMLScriptElement.htmlFor, HTMLScriptElement.integrity, HTMLScriptElement.noModule, HTMLScriptElement.referrerPolicy, HTMLScriptElement.src, HTMLScriptElement.text, HTMLScriptElement.type, HTMLScriptElement.supports(type); see also WebIDLPedia
HTMLSelectElement (WebIDL interface) §: Defined in HTML; Related terms: undefinedautocomplete, undefineddisabled, undefinedform, undefinedlabels, HTMLSelectElement.length, HTMLSelectElement.multiple, undefinedname, HTMLSelectElement.options, HTMLSelectElement.required, HTMLSelectElement.selectedIndex, HTMLSelectElement.selectedOptions, HTMLSelectElement.size, HTMLSelectElement.type, undefinedvalidationMessage, undefinedvalidity, HTMLSelectElement.value, undefinedwillValidate, HTMLSelectElement.add(element, before), undefinedcheckValidity(), HTMLSelectElement.item(index), HTMLSelectElement.namedItem(name), HTMLSelectElement.remove(), undefinedreportValidity(), undefinedsetCustomValidity(error), HTMLSelectElement.showPicker(); see also WebIDLPedia
HTMLSharedStorageWritableElementUtils (WebIDL interface) §: Defined in Shared Storage API; Related terms: HTMLSharedStorageWritableElementUtils.sharedStorageWritable; see also WebIDLPedia
HTMLSlotElement (WebIDL interface) §: Defined in HTML; Referenced in DOM; Related terms: concept manually assigned nodes, HTMLSlotElement.name, event slotchange, HTMLSlotElement.assign(...nodes), HTMLSlotElement.assignedElements(options), HTMLSlotElement.assignedNodes(options); see also WebIDLPedia
HTMLSourceElement (WebIDL interface) §: Defined in HTML; Related terms: undefinedheight, HTMLSourceElement.media, HTMLSourceElement.sizes, HTMLSourceElement.src, HTMLSourceElement.srcset, HTMLSourceElement.type, undefinedwidth, event error; see also WebIDLPedia
HTMLSpanElement (WebIDL interface) §: Defined in HTML; see also WebIDLPedia
HTMLString (WebIDL type alias) §: Defined in Trusted Types; Referenced in HTML, HTML Sanitizer API; see also WebIDLPedia
HTMLStyleElement (WebIDL interface) §: Defined in HTML; Referenced in URL Fragment Text Directives; Related terms: HTMLStyleElement.blocking, HTMLStyleElement.disabled, HTMLStyleElement.media, HTMLStyleElement.type; see also WebIDLPedia
HTMLTableCaptionElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTableCaptionElement.align; see also WebIDLPedia
HTMLTableCellElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTableCellElement.abbr, HTMLTableCellElement.align, HTMLTableCellElement.axis, HTMLTableCellElement.bgColor, HTMLTableCellElement.cellIndex, HTMLTableCellElement.ch, HTMLTableCellElement.chOff, HTMLTableCellElement.colSpan, HTMLTableCellElement.headers, HTMLTableCellElement.height, HTMLTableCellElement.noWrap, HTMLTableCellElement.rowSpan, HTMLTableCellElement.scope, HTMLTableCellElement.vAlign, HTMLTableCellElement.width; see also WebIDLPedia
HTMLTableColElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTableColElement.align, HTMLTableColElement.ch, HTMLTableColElement.chOff, HTMLTableColElement.span, HTMLTableColElement.vAlign, HTMLTableColElement.width; see also WebIDLPedia
HTMLTableElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTableElement.align, HTMLTableElement.bgColor, HTMLTableElement.border, HTMLTableElement.caption, HTMLTableElement.cellPadding, HTMLTableElement.cellSpacing, HTMLTableElement.frame, HTMLTableElement.rows, HTMLTableElement.rules, HTMLTableElement.summary, HTMLTableElement.tBodies, HTMLTableElement.tFoot, HTMLTableElement.tHead, HTMLTableElement.width, HTMLTableElement.createCaption(), HTMLTableElement.createTBody(), HTMLTableElement.createTFoot(), HTMLTableElement.createTHead(), HTMLTableElement.deleteCaption(), HTMLTableElement.deleteRow(index), HTMLTableElement.deleteTFoot(), HTMLTableElement.deleteTHead(), HTMLTableElement.insertRow(index); see also WebIDLPedia
HTMLTableRowElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTableRowElement.align, HTMLTableRowElement.bgColor, HTMLTableRowElement.cells, HTMLTableRowElement.ch, HTMLTableRowElement.chOff, HTMLTableRowElement.rowIndex, HTMLTableRowElement.sectionRowIndex, HTMLTableRowElement.vAlign, HTMLTableRowElement.deleteCell(index), HTMLTableRowElement.insertCell(index); see also WebIDLPedia
HTMLTableSectionElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTableSectionElement.align, HTMLTableSectionElement.ch, HTMLTableSectionElement.chOff, HTMLTableSectionElement.rows, HTMLTableSectionElement.vAlign, HTMLTableSectionElement.deleteRow(index), HTMLTableSectionElement.insertRow(index); see also WebIDLPedia
HTMLTemplateElement (WebIDL interface) §: Defined in HTML; Referenced in HTML Sanitizer API; Related terms: HTMLTemplateElement.content; see also WebIDLPedia
HTMLTextAreaElement (WebIDL interface) §: Defined in HTML; Related terms: undefinedautocomplete, HTMLTextAreaElement.cols, HTMLTextAreaElement.defaultValue, HTMLTextAreaElement.dirName, undefineddisabled, undefinedform, undefinedlabels, HTMLTextAreaElement.maxLength, HTMLTextAreaElement.minLength, undefinedname, HTMLTextAreaElement.placeholder, HTMLTextAreaElement.readOnly, HTMLTextAreaElement.required, HTMLTextAreaElement.rows, undefinedselectionDirection, undefinedselectionEnd, undefinedselectionStart, HTMLTextAreaElement.textLength, HTMLTextAreaElement.type, undefinedvalidationMessage, undefinedvalidity, HTMLTextAreaElement.value, undefinedwillValidate, HTMLTextAreaElement.wrap, undefinedcheckValidity(), undefinedreportValidity(), undefinedselect(), undefinedsetCustomValidity(error), undefinedsetRangeText(replacement, start, end, selectMode), undefinedsetSelectionRange(start, end, direction); see also WebIDLPedia
HTMLTimeElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTimeElement.dateTime; see also WebIDLPedia
HTMLTitleElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTitleElement.text; see also WebIDLPedia
HTMLTrackElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLTrackElement.default, HTMLTrackElement.kind, HTMLTrackElement.label, HTMLTrackElement.readyState, HTMLTrackElement.src, HTMLTrackElement.srclang, HTMLTrackElement.track, HTMLTrackElement.ERROR, HTMLTrackElement.LOADED, HTMLTrackElement.LOADING, HTMLTrackElement.NONE, event cuechange, event error, event load; see also WebIDLPedia
HTMLUListElement (WebIDL interface) §: Defined in HTML; Related terms: HTMLUListElement.compact, HTMLUListElement.type; see also WebIDLPedia
HTMLUnknownElement (WebIDL interface) §: Defined in HTML; Referenced in DOM; see also WebIDLPedia
HTMLVideoElement (WebIDL interface) §: Defined in HTML; Referenced in Media Playback Quality, Document Picture-in-Picture, URL Fragment Text Directives, Accelerated Shape Detection in Images, HTMLVideoElement.requestVideoFrameCallback(), Autoplay Policy Detection, Media Source Extensions™, Media Capture and Streams, Paint Timing, Picture-in-Picture, WebCodecs, WebGPU, WebXR Layers API 1; Related terms: HTMLVideoElement.disablePictureInPicture, undefinedheight, HTMLVideoElement.onenterpictureinpicture, HTMLVideoElement.onleavepictureinpicture, HTMLVideoElement.playsInline, HTMLVideoElement.poster, HTMLVideoElement.videoHeight, HTMLVideoElement.videoWidth, undefinedwidth, event enterpictureinpicture, event leavepictureinpicture, HTMLVideoElement.cancelVideoFrameCallback(handle), HTMLVideoElement.getVideoPlaybackQuality(), HTMLVideoElement.requestPictureInPicture(), HTMLVideoElement.requestVideoFrameCallback(callback); see also WebIDLPedia
HTTP fetch (concept) §: Defined in Fetch; Referenced in Federated Credential Management API, Topics API, Private Network Access, Shared Storage API, Private State Token API, Protected Audience, Loading Signed Exchanges, Resource Timing, Service Workers
HTTP newline byte (concept) §: Defined in Fetch; Referenced in Source Map
HTTP tab or space (concept) §: Defined in Fetch
HTTP tab or space byte (concept) §: Defined in Fetch; Referenced in WebAssembly Web API
HTTP whitespace (concept) §: Defined in Fetch; Referenced in MIME Sniffing
HTTP whitespace byte (concept) §: Defined in Fetch
http-equiv (markup attribute for meta ) §: Defined in HTML; Referenced in Navigational-Tracking Mitigations, A Well-Known URL for Changing Passwords, Content Security Policy 3, HTML Accessibility API Mappings 1.0; Related terms: value content-language, value content-security-policy, value content-type, value default-style, value refresh, value set-cookie, value x-ua-compatible
HTTP-redirect fetch (concept) §: Defined in Fetch; Referenced in Federated Credential Management API, Client Hints Infrastructure, Resource Timing
HTTP(S) scheme (concept) §: Defined in Fetch; Referenced in HTML, Source Map, Prefetch, Prerendering Revamped, Speculation Rules, Portals, Private State Token API, Content Security Policy 3, Resource Timing
http3Only (concept for obtain a connection ) §: Defined in Fetch
HTMLMetaElement.httpEquiv (WebIDL attribute) §: Defined in HTML
RTCError.httpRequestStatusCode (WebIDL attribute) §: Defined in Identity for WebRTC 1.0
RTCErrorInit.httpRequestStatusCode (WebIDL dictionary member) §: Defined in Identity for WebRTC 1.0
<hue> (CSS type) §: Defined in CSS Color 4; Referenced in CSS Color HDR 1, CSS Color 5
hue (CSS value for <blend-mode> ) §: Defined in Compositing 2 , Compositing 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
<hue-interpolation-method> (CSS type) §: Defined in CSS Color 4 , CSS Color 5
hue-rotate() (CSS function for filter ) §: Defined in Filter Effects 1
hueRotate (value for type ) §: Defined in Filter Effects 1
RTCOutboundRtpStreamStats.hugeFramesSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
<hv-line-command> (CSS type for shape() ) §: Defined in CSS Shapes 2
HWB (CSS value for hwb() ) §: Defined in CSS Color 4; Referenced in CSS Color 5
hwb() (CSS function) §: Defined in CSS Color 4 , CSS Color 5; Referenced in CSS Typed OM 1; Related terms: CSS value alpha, CSS value b, CSS value h, CSS value HWB, CSS value w
"hwio" (value for MLConv2dFilterOperandLayout WebIDL enumeration) §: Defined in Web Neural Network API
"hwoi" (value for MLConvTranspose2dFilterOperandLayout WebIDL enumeration) §: Defined in Web Neural Network API
"hybrid" (value for AuthenticatorTransport WebIDL enumeration) §: Defined in Web Authentication
"hybrid" (value for PublicKeyCredentialHints WebIDL enumeration) §: Defined in Web Authentication
"hybridTransport" (value for ClientCapability WebIDL enumeration) §: Defined in Web Authentication
hyperlink (concept) §: Defined in HTML; Referenced in Navigational-Tracking Mitigations, HTML Accessibility API Mappings 1.0
hyphen-separated matching (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
hyphenate-character (CSS property) §: Defined in CSS Text 4; Related terms: CSS value auto
hyphenate-limit-chars (CSS property) §: Defined in CSS Text 4; Related terms: CSS value auto
hyphenate-limit-last (CSS property) §: Defined in CSS Text 4
hyphenate-limit-lines (CSS property) §: Defined in CSS Text 4; Related terms: CSS value always, CSS value column, CSS value none, CSS value page, CSS value spread
hyphenate-limit-zone (CSS property) §: Defined in CSS Text 4
hyphens (CSS property) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023; Related terms: CSS value auto, CSS value manual, CSS value none
Math.hypot(...args) (WebIDL operation) §: Defined in ECMAScript
hypot() (CSS function) §: Defined in CSS Values 4
hypothetical WeakRef-oblivious (concept for ECMAScript ) §: Defined in ECMAScript
Hz (CSS value for <frequency> ) §: Defined in CSS Values 3 , CSS Values 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
Hz(value) (WebIDL operation for CSS ) §: Defined in CSS Typed OM 1