Terms starting with letter b

Color key: WebIDL CSS Markup HTTP

b (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML, WebVTT: The Web Video Text Tracks Format
b (CSS value for rgb() ) §: Defined in CSS Color 5
b (CSS value for hwb() ) §: Defined in CSS Color 5
b (CSS value for lab() ) §: Defined in CSS Color 5
b (CSS value for oklab() ) §: Defined in CSS Color 5
b (CSS value for color() ) §: Defined in CSS Color 5; Referenced in CSS 2.2
CSSHWB.b (WebIDL attribute) §: Defined in CSS Typed OM 1
CSSLab.b (WebIDL attribute) §: Defined in CSS Typed OM 1
CSSOKLab.b (WebIDL attribute) §: Defined in CSS Typed OM 1
CSSRGB.b (WebIDL attribute) §: Defined in CSS Typed OM 1
DOMMatrix.b (WebIDL attribute) §
DOMMatrixReadOnly.b (WebIDL attribute) §: Defined in Geometry Interfaces 1
DOMMatrix2DInit.b (WebIDL dictionary member) §: Defined in Geometry Interfaces 1
GPUColorDict.b (WebIDL dictionary member) §: Defined in WebGPU
B4 (CSS value for <page-size> ) §: Defined in CSS Paged Media 3
B5 (CSS value for <page-size> ) §: Defined in CSS Paged Media 3
"babble" (value for USBTransferStatus WebIDL enumeration) §: Defined in WebUSB API
back (CSS value for nav-controls descriptor of @media @rule ) §: Defined in Media Queries 5
"back" (value for GPUCullMode WebIDL enumeration) §: Defined in WebGPU
"back_forward" (value for NavigationTimingType WebIDL enumeration) §: Defined in Navigation Timing 2; Referenced in HTML
History.back() (WebIDL operation) §: Defined in HTML
Navigation.back(options) (WebIDL operation) §: Defined in HTML
::backdrop (CSS selector) §: Defined in CSS Positioned Layout 4; Referenced in Fullscreen API, CSS Containment 3
backdrop (concept) §: Defined in Compositing 2 , Compositing 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, Filter Effects 1
Backdrop Root (concept) §: Defined in Filter Effects 2; Referenced in Element Capture, CSS View Transitions 1, WebXR DOM Overlays
backdrop-filter (CSS property) §: Defined in Filter Effects 2; Referenced in CSS Typed OM 1, CSS View Transitions 1
backface-visibility (CSS property) §: Defined in CSS Transforms 2; Referenced in Compatibility, CSS Typed OM 1
background (markup attribute) §: Defined in HTML
"background" (value for TaskPriority WebIDL enumeration) §: Defined in Prioritized Task Scheduling
background (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Backgrounds 4, CSS Form Styling 1, CSS Variables 2, Compositing 2, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Color 4, CSS Containment 2, CSS Images 3, CSS Nesting, CSS Table 3, CSS Typed OM 1, CSS Values 3, CSS Values 4, CSS Variables 1, CSS Will Change 1, WebVTT: The Web Video Text Tracks Format
Background (CSS value for <color>, <deprecated-color> type ) §: Defined in CSS Color 4
HTMLBodyElement.background (WebIDL attribute) §: Defined in HTML
Background (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
background painting area (concept) §: Defined in CSS Backgrounds 4; Referenced in CSS Overflow 3, CSS Paged Media 3
background_color (concept for manifest ) §: Defined in Web Application Manifest
IdentityProviderBranding.background_color (WebIDL dictionary member) §: Defined in Federated Credential Management API
background-attachment (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Paged Media 3, CSS Positioned Layout 3, CSS Transforms 1, CSS Typed OM 1, CSS User Interface 4, CSS Values 3, CSS Values 4; Related terms: CSS value fixed, CSS value local, CSS value scroll
background-blend-mode (CSS property) §: Defined in Compositing 2 , Compositing 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1
background-clip (CSS property) §: Defined in CSS Backgrounds 4 , CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Paged Media 3, CSS Shapes 1, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value border, CSS value border-box, CSS value content-box, CSS value padding-box, CSS value text
background-color (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Backgrounds 4, CSS Variables 2, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Color 4, CSS Color Adjustment 1, CSS Pseudo-Elements 4, CSS Transitions, CSS Transitions 2, CSS Typed OM 1, CSS User Interface 4, CSS Variables 1, CSSOM, WebVTT: The Web Video Text Tracks Format
background-image (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Values 5, Compositing 2, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Color Adjustment 1, CSS Images 3, CSS Transitions, CSS Typed OM 1, CSS User Interface 4, CSS Values 4, Mixed Content, Web Animations, WebVTT: The Web Video Text Tracks Format; Related terms: CSS value none, CSS value <uri>
background-origin (CSS property) §: Defined in CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Paged Media 3, CSS Table 3, CSS User Interface 4, Web Animations; Related terms: CSS value border-box, CSS value content-box, CSS value padding-box
background-position (CSS property) §: Defined in CSS Backgrounds 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Values 5, CSS Values 5, CSS Snapshot 2022, CSS Snapshot 2023, CSS Images 3, CSS Transforms 1, CSS Transforms 2, CSS Typed OM 1, CSS User Interface 4, CSS Values 3, CSS Values 4, Largest Contentful Paint; Related terms: CSS value bottom, CSS value center, CSS value left, CSS value right, CSS value top
background-position-block (CSS property) §: Defined in CSS Backgrounds 4
background-position-inline (CSS property) §: Defined in CSS Backgrounds 4
background-position-x (CSS property) §: Defined in CSS Backgrounds 4
background-position-y (CSS property) §: Defined in CSS Backgrounds 4
background-repeat (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Images 3, CSS Typed OM 1; Related terms: CSS value no-repeat, CSS value repeat, CSS value repeat-x, CSS value repeat-y, CSS value round, CSS value space
background-size (CSS property) §: Defined in CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Images 3, CSS Sizing 4, CSS Table 3, CSS User Interface 4; Related terms: CSS value auto, CSS value contain, CSS value cover
background-tbd (CSS property) §: Defined in CSS Backgrounds 4
BackgroundAlpha (value for in ) §: Defined in Filter Effects 1
ServiceWorkerRegistration.backgroundFetch (WebIDL attribute) §: Defined in Background Fetch
backgroundfetchabort (event for ServiceWorkerGlobalScope ) §: Defined in Background Fetch
backgroundfetchclick (event for ServiceWorkerGlobalScope ) §: Defined in Background Fetch
BackgroundFetchEvent (WebIDL interface) §: Defined in Background Fetch; Related terms: BackgroundFetchEvent.registration, new BackgroundFetchEvent(type, init); see also WebIDLPedia
new BackgroundFetchEvent(type, init) (WebIDL constructor) §: Defined in Background Fetch
BackgroundFetchEventInit (WebIDL dictionary) §: Defined in Background Fetch; Related terms: BackgroundFetchEventInit.registration; see also WebIDLPedia
backgroundfetchfail (event for ServiceWorkerGlobalScope ) §: Defined in Background Fetch
BackgroundFetchFailureReason (WebIDL enumeration) §: Defined in Background Fetch; Related terms: value , value aborted, value bad-status, value download-total-exceeded, value fetch-error, value quota-exceeded; see also WebIDLPedia
BackgroundFetchManager (WebIDL interface) §: Defined in Background Fetch; Referenced in Web Periodic Background Synchronization; Related terms: BackgroundFetchManager.fetch(id, requests, options), BackgroundFetchManager.get(id), BackgroundFetchManager.getIds(); see also WebIDLPedia
BackgroundFetchOptions (WebIDL dictionary) §: Defined in Background Fetch; Related terms: BackgroundFetchOptions.downloadTotal; see also WebIDLPedia
BackgroundFetchRecord (WebIDL interface) §: Defined in Background Fetch; Related terms: BackgroundFetchRecord.request, BackgroundFetchRecord.responseReady; see also WebIDLPedia
BackgroundFetchRegistration (WebIDL interface) §: Defined in Background Fetch; Related terms: BackgroundFetchRegistration.downloaded, BackgroundFetchRegistration.downloadTotal, BackgroundFetchRegistration.failureReason, BackgroundFetchRegistration.id, BackgroundFetchRegistration.onprogress, BackgroundFetchRegistration.recordsAvailable, BackgroundFetchRegistration.result, BackgroundFetchRegistration.uploaded, BackgroundFetchRegistration.uploadTotal, event progress, BackgroundFetchRegistration.abort(), BackgroundFetchRegistration.match(request, options), BackgroundFetchRegistration.matchAll(request, options); see also WebIDLPedia
BackgroundFetchResult (WebIDL enumeration) §: Defined in Background Fetch; Related terms: value , value failure, value success; see also WebIDLPedia
backgroundfetchsuccess (event for ServiceWorkerGlobalScope ) §: Defined in Background Fetch
BackgroundFetchUIOptions (WebIDL dictionary) §: Defined in Background Fetch; Related terms: BackgroundFetchUIOptions.icons, BackgroundFetchUIOptions.title; see also WebIDLPedia
BackgroundFetchUpdateUIEvent (WebIDL interface) §: Defined in Background Fetch; Related terms: new BackgroundFetchUpdateUIEvent(type, init), BackgroundFetchUpdateUIEvent.updateUI(options); see also WebIDLPedia
new BackgroundFetchUpdateUIEvent(type, init) (WebIDL constructor) §: Defined in Background Fetch
BackgroundImage (value for in ) §: Defined in Filter Effects 1
BackgroundSyncOptions (WebIDL dictionary) §: Defined in Web Periodic Background Synchronization; Related terms: BackgroundSyncOptions.minInterval; see also WebIDLPedia
backing list (concept for observable array attribute ) §: Defined in Web IDL; Referenced in CSS Typed OM 1, CSSOM
BluetoothManufacturerDataMap.[[BackingMap]] (internal slot) §: Defined in Web Bluetooth
BluetoothServiceDataMap.[[BackingMap]] (internal slot) §: Defined in Web Bluetooth
TCPServerSocketOptions.backlog (WebIDL dictionary member) §: Defined in Direct Sockets API
BackreferenceMatcher (algorithm) §: Defined in ECMAScript
backslash escapes (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
backupEligible (algorithm for credential record ) §: Defined in Web Authentication
backupState (algorithm for credential record ) §: Defined in Web Authentication
"backward" (value for MLRecurrentNetworkDirection WebIDL enumeration) §: Defined in Web Neural Network API
backwards (CSS value for animation-fill-mode ) §: Defined in CSS Animations 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Animations 2
"backwards" (value for FillMode, PlaybackDirection enumeration WebIDL enumerations) §: Defined in Web Animations , Web Animations 2
bad port (concept) §: Defined in Fetch
"bad-grammar" (value for SpeechRecognitionErrorCode WebIDL enumeration) §: Defined in Web Speech API
"bad-status" (value for BackgroundFetchFailureReason WebIDL enumeration) §: Defined in Background Fetch
<bad-string-token> (CSS type) §: Defined in CSS Syntax 3; Referenced in CSS Variables 2, CSS Variables 1
<bad-url-token> (CSS type) §: Defined in CSS Syntax 3; Referenced in CSS Variables 2, CSS Variables 1
Notification.badge (WebIDL attribute) §: Defined in Notifications API
NotificationOptions.badge (WebIDL dictionary member) §: Defined in Notifications API
ValidityState.badInput (WebIDL attribute) §: Defined in HTML
balance (CSS value for column-fill ) §: Defined in CSS Multicol 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
balance (CSS value for text-wrap-style ) §: Defined in CSS Text 4
balance-all (CSS value for column-fill ) §: Defined in CSS Multicol 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
"balanced" (value for RTCDegradationPreference WebIDL enumeration) §: Defined in MediaStreamTrack Content Hints
"balanced" (value for AudioContextLatencyCategory WebIDL enumeration) §: Defined in Web Audio API
"balanced" (value for RTCBundlePolicy WebIDL enumeration) §: Defined in WebRTC 1.0
"bandpass" (value for BiquadFilterType WebIDL enumeration) §: Defined in Web Audio API
"bandwidth" (value for RTCQualityLimitationReason WebIDL enumeration) §: Defined in WebRTC Statistics
bar (CSS value for caret-shape ) §: Defined in CSS User Interface 4; Referenced in CSS Nesting
BarcodeDetector (WebIDL interface) §: Defined in Accelerated Shape Detection in Images; Related terms: new BarcodeDetector(barcodeDetectorOptions), BarcodeDetector.detect(image), BarcodeDetector.getSupportedFormats(); see also WebIDLPedia
new BarcodeDetector(barcodeDetectorOptions) (WebIDL constructor) §: Defined in Accelerated Shape Detection in Images
BarcodeDetectorOptions (WebIDL dictionary) §: Defined in Accelerated Shape Detection in Images; Related terms: BarcodeDetectorOptions.formats; see also WebIDLPedia
BarcodeFormat (WebIDL enumeration) §: Defined in Accelerated Shape Detection in Images; Related terms: value aztec, value codabar, value code_128, value code_39, value code_93, value data_matrix, value ean_13, value ean_8, value itf, value pdf417, value qr_code, value unknown, value upc_a, value upc_e; see also WebIDLPedia
BarProp (WebIDL interface) §: Defined in HTML; Related terms: BarProp.visible; see also WebIDLPedia
base (markup element) §: Defined in HTML; Referenced in Scripting Policy, Content Security Policy 3, CSS Values 3, CSS Values 4, EPUB 3.3, HTML Accessibility API Mappings 1.0, ARIA in HTML, Publication Manifest, SVG 2; Related terms: markup attribute href, markup attribute target
JsonLdOptions.base (WebIDL dictionary member) §: Defined in JSON-LD 1.1 Processing Algorithms and API
Base direction (concept) §: Defined in Internationalization Glossary
base IRI (concept) §: Defined in RDF 1.2 Concepts and Abstract Syntax
base type (concept for CSSNumericValue ) §: Defined in CSS Typed OM 1
base URL (concept for script ) §: Defined in HTML; Referenced in Long Animation Frames API, WebDriver BiDi, Service Workers
base-palette (CSS descriptor for @font-palette-values ) §: Defined in CSS Fonts 4; Related terms: CSS type <integer>, CSS value dark, CSS value light
base-uri (concept) §: Defined in Content Security Policy 3
base64-value (grammar) §: Defined in Content Security Policy 3; Referenced in Speculation Rules
base64-value (grammar) §: Defined in SRI
RTCCertificateStats.base64Certificate (WebIDL dictionary member) §: Defined in WebRTC Statistics
Base64URLString (WebIDL type alias) §: Defined in Web Authentication; see also WebIDLPedia
GPUTextureViewDescriptor.baseArrayLayer (WebIDL dictionary member) §: Defined in WebGPU
BaseAudioContext (WebIDL interface) §: Defined in Web Audio API; Related terms: BaseAudioContext.audioWorklet, BaseAudioContext.[[control thread state]], BaseAudioContext.[[current frame]], BaseAudioContext.currentTime, BaseAudioContext.decoding thread, BaseAudioContext.destination, BaseAudioContext.listener, BaseAudioContext.onstatechange, BaseAudioContext.[[pending promises]], BaseAudioContext.[[render quantum size]], BaseAudioContext.[[rendering thread state]], BaseAudioContext.renderQuantumSize, BaseAudioContext.sampleRate, BaseAudioContext.state, event statechange, BaseAudioContext.createAnalyser(), BaseAudioContext.createBiquadFilter(), BaseAudioContext.createBuffer(numberOfChannels, length, sampleRate), BaseAudioContext.createBufferSource(), BaseAudioContext.createChannelMerger(numberOfInputs), BaseAudioContext.createChannelSplitter(numberOfOutputs), BaseAudioContext.createConstantSource(), BaseAudioContext.createConvolver(), BaseAudioContext.createDelay(maxDelayTime), BaseAudioContext.createDynamicsCompressor(), BaseAudioContext.createGain(), BaseAudioContext.createIIRFilter(feedforward, feedback), BaseAudioContext.createOscillator(), BaseAudioContext.createPanner(), BaseAudioContext.createPeriodicWave(real, imag, constraints), BaseAudioContext.createScriptProcessor(bufferSize, numberOfInputChannels, numberOfOutputChannels), BaseAudioContext.createStereoPanner(), BaseAudioContext.createWaveShaper(), BaseAudioContext.decodeAudioData(audioData, successCallback, errorCallback); see also WebIDLPedia
BaseComputedKeyframe (WebIDL dictionary) §: Defined in Web Animations; Related terms: BaseComputedKeyframe.composite, BaseComputedKeyframe.computedOffset, BaseComputedKeyframe.easing, BaseComputedKeyframe.offset; see also WebIDLPedia
basefont (markup element) §: Defined in HTML
baseFrequency (markup attribute for feTurbulence ) §: Defined in Filter Effects 1
SVGFETurbulenceElement.baseFrequencyX (WebIDL attribute) §: Defined in Filter Effects 1
SVGFETurbulenceElement.baseFrequencyY (WebIDL attribute) §: Defined in Filter Effects 1
BaseKeyframe (WebIDL dictionary) §: Defined in Web Animations; Related terms: BaseKeyframe.composite, BaseKeyframe.easing, BaseKeyframe.offset; see also WebIDLPedia
AudioContext.baseLatency (WebIDL attribute) §: Defined in Web Audio API
XRRenderState.baseLayer (WebIDL attribute) §: Defined in WebXR Device API; Referenced in WebXR Augmented Reality 1, WebXR Layers API 1
XRRenderStateInit.baseLayer (WebIDL dictionary member) §: Defined in WebXR Device API; Referenced in WebXR Layers API 1
Baseline (WebIDL interface) §: Defined in Font Metrics API 1; Related terms: Baseline.name, Baseline.value; see also WebIDLPedia
baseline (CSS value for <baseline-position>, align-content property, align-items property, align-self property, justify-items property, justify-self property ) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
baseline (CSS value for align-items, align-self property ) §: Defined in CSS Flexbox 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
baseline (concept) §: Defined in CSS Inline Layout 3
baseline (CSS value for alignment-baseline, vertical-align property ) §: Defined in CSS Inline Layout 3; Referenced in CSS Text 3, CSS Text 4, CSS Text Decoration 3, CSS Text Decoration 4, CSS Writing Modes 3, CSS Writing Modes 4
baseline (CSS value for baseline-shift ) §: Defined in CSS Inline Layout 3
baseline (CSS value for line-snap ) §: Defined in CSS Line Grid 1
baseline (CSS value for box-snap ) §: Defined in CSS Line Grid 1
baseline (CSS value for vertical-align ) §: Defined in CSS 2.2
baseline (concept) §: Defined in SVG 2
Baseline alignment (concept) §: Defined in CSS Box Alignment 3; Referenced in CSS Grid Layout 3, CSS Snapshot 2022, CSS Snapshot 2023, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Overflow 3, CSS Positioned Layout 3
baseline alignment preference (concept) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
baseline alignment preference (concept) §: Defined in CSS Inline Layout 3
baseline content-alignment (concept) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
baseline self-alignment (concept) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
baseline set (concept) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2
<baseline-position> (CSS type) §: Defined in CSS Box Alignment 3; Referenced in CSS Anchor Positioning; Related terms: CSS value baseline, CSS value first baseline, CSS value last baseline
baseline-sharing group (concept) §: Defined in CSS Box Alignment 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Grid Layout 1, CSS Grid Layout 2
baseline-shift (CSS property) §: Defined in CSS Inline Layout 3; Referenced in CSS Typed OM 1; Related terms: CSS value baseline, CSS value bottom, CSS value center, CSS value sub, CSS value super, CSS value top
baseline-source (CSS property) §: Defined in CSS Inline Layout 3; Referenced in CSS Box Alignment 3; Related terms: CSS value auto, CSS value first, CSS value last
baseline-table (concept) §: Defined in SVG 2
FontMetrics.baselines (WebIDL attribute) §: Defined in Font Metrics API 1
GPUTextureViewDescriptor.baseMipLevel (WebIDL dictionary member) §: Defined in WebGPU
CSSFontPaletteValuesRule.basePalette (WebIDL attribute) §: Defined in CSS Fonts 4
BasePropertyIndexedKeyframe (WebIDL dictionary) §: Defined in Web Animations; Related terms: BasePropertyIndexedKeyframe.composite, BasePropertyIndexedKeyframe.easing, BasePropertyIndexedKeyframe.offset; see also WebIDLPedia
Node.baseURI (WebIDL attribute) §: Defined in DOM
CSSStyleSheetInit.baseURL (WebIDL dictionary member) §: Defined in CSSOM
URLPatternInit.baseURL (WebIDL dictionary member) §: Defined in URL Pattern
SVGAnimatedAngle.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedBoolean.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedEnumeration.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedInteger.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedLength.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedLengthList.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedNumber.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedNumberList.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedPreserveAspectRatio.baseVal (WebIDL attribute) §: Defined in SVG 2; Referenced in CSS Transforms 1
SVGAnimatedRect.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedString.baseVal (WebIDL attribute) §: Defined in SVG 2
SVGAnimatedTransformList.baseVal (WebIDL attribute) §: Defined in SVG 2
"basic" (value for ResponseType WebIDL enumeration) §: Defined in Fetch
basic filtered response (concept) §: Defined in Fetch; Referenced in Service Workers
basic language range (concept) §: Defined in Internationalization Glossary
basic multilingual plane (concept) §: Defined in Internationalization Glossary
basic shape (concept) §: Defined in SVG 2
basic URL parser (concept) §: Defined in URL; Referenced in HTML, URL Pattern, Cookie Store API, User Agent Interaction with Related Website Sets, Speculation Rules, Payment Method Identifiers, Payment Method Manifest, Payment Request API 1.1; Related terms: concept authority state, concept file host state, concept file slash state, concept file state, concept fragment state, concept host state, concept hostname state, concept no scheme state, concept opaque path state, concept path or authority state, concept path start state, concept path state, concept port state, concept query state, concept relative slash state, concept relative state, concept scheme start state, concept scheme state, concept special authority ignore slashes state, concept special authority slashes state, concept special relative or authority state, concept state override, concept url
<basic-shape> (CSS type) §: Defined in CSS Shapes 1; Referenced in CSS Shapes 2, Motion Path 1; Related terms: concept equivalent path, concept reference box, CSS function circle(), CSS function ellipse(), CSS function inset(), CSS function path(), CSS function polygon(), CSS function rect(), CSS function xywh()
<basic-shape> (CSS value for shape-outside ) §: Defined in CSS Shapes 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
<basic-shape-rect> (CSS type) §: Defined in CSS Shapes 1; Referenced in CSS Images 5
MLGraphBuilder.batchNormalization(input, mean, variance, options) (WebIDL operation) §: Defined in Web Neural Network API
BatteryManager (WebIDL interface) §: Defined in Battery Status API; Related terms: BatteryManager.charging, BatteryManager.chargingTime, BatteryManager.dischargingTime, BatteryManager.level, BatteryManager.onchargingchange, BatteryManager.onchargingtimechange, BatteryManager.ondischargingtimechange, BatteryManager.onlevelchange; see also WebIDLPedia
SerialOptions.baudRate (WebIDL dictionary member) §: Defined in Web Serial API
"bc1-rgba-unorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc1-rgba-unorm-srgb" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc2-rgba-unorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc2-rgba-unorm-srgb" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc3-rgba-unorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc3-rgba-unorm-srgb" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc4-r-snorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc4-r-unorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc5-rg-snorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc5-rg-unorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc6h-rgb-float" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc6h-rgb-ufloat" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc7-rgba-unorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bc7-rgba-unorm-srgb" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
USBBlocklistEntry.bcdDevice (WebIDL dictionary member) §: Defined in WebUSB API
bday (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
bday-day (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
bday-month (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
bday-year (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
bdi (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML
bdo (markup element) §: Defined in HTML; Referenced in EPUB 3.3, HTML Accessibility API Mappings 1.0, ARIA in HTML
bearing angle (concept) §: Defined in CSS Values 3 , CSS Values 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
become browsing-context connected (concept) §: Defined in HTML; Referenced in Portals
become browsing-context disconnected (concept) §: Defined in HTML; Referenced in Portals
become disconnected (concept) §: Defined in HTML; Referenced in Pointer Lock 2.0
becomes connected (concept) §: Defined in HTML
::before (CSS selector) §: Defined in CSS Pseudo-Elements 4 , CSS 2.2 , Selectors 3; Referenced in CSS Display 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Containment 2, CSS Containment 3, CSS Generated Content 3, CSS Layout API 1, CSS Lists 3, CSS Nesting, CSS Paged Media 3, CSS Speech 1, CSS User Interface 4, CSSOM, Selectors 4, Selectors 4, WebVTT: The Web Video Text Tracks Format
:before (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
before (concept for boundary point ) §: Defined in DOM; Referenced in Selection API
before (CSS value for content() ) §: Defined in CSS Generated Content 3
before phase (concept for animation effect ) §: Defined in Web Animations; Referenced in CSS Animations 2, Web Animations 2
before-change style (concept) §: Defined in CSS Transitions; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Transitions 2, Web Animations
AnimationEffect.before(...effects) (WebIDL operation) §: Defined in Web Animations 2
ChildNode.before(...nodes) (WebIDL operation) §: Defined in DOM
beforeinstallprompt (event) §: Defined in Manifest Incubations
BeforeInstallPromptEvent (WebIDL interface) §: Defined in Manifest Incubations; Related terms: WebIDL constructor constructor(), BeforeInstallPromptEvent.prompt(); see also WebIDLPedia
beforematch (event for HTMLElement ) §: Defined in HTML
beforeprint (event for Window ) §: Defined in HTML
beforetoggle (event for HTMLElement ) §: Defined in HTML
beforeunload (event for Window ) §: Defined in HTML; Referenced in Prerendering Revamped
BeforeUnloadEvent (WebIDL interface) §: Defined in HTML; Referenced in DOM; Related terms: BeforeUnloadEvent.returnValue; see also WebIDLPedia
begin (markup attribute for animate ) §: Defined in SVG Animations 2; Referenced in SVG Animations 2, SVG 2
GPUCommandEncoder.beginComputePass(descriptor) (WebIDL operation) §: Defined in WebGPU
GPUComputePassTimestampWrites.beginningOfPassWriteIndex (WebIDL dictionary member) §: Defined in WebGPU
GPURenderPassTimestampWrites.beginningOfPassWriteIndex (WebIDL dictionary member) §: Defined in WebGPU
GPURenderPassEncoder.beginOcclusionQuery(queryIndex) (WebIDL operation) §: Defined in WebGPU
CanvasDrawPath.beginPath() (WebIDL operation) §: Defined in HTML
GPUCommandEncoder.beginRenderPass(descriptor) (WebIDL operation) §: Defined in WebGPU
behave as auto (concept) §: Defined in CSS Sizing 3; Referenced in CSS Values 5, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Sizing 4, CSS Table 3
behavior (markup attribute for marquee ) §: Defined in HTML
behavior (concept) §: Defined in WebGPU Shading Language
HTMLMarqueeElement.behavior (WebIDL attribute) §: Defined in HTML
ScrollOptions.behavior (WebIDL dictionary member) §: Defined in CSSOM View
beige (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
beige (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
being rendered (concept) §: Defined in HTML; Referenced in Speculation Rules, Page Lifecycle, URL Fragment Text Directives, CSS Spatial Navigation 1, CSS Transitions 2, CSSOM, Paint Timing, Resize Observer
"belowThreshold" (value for KAnonStatus WebIDL enumeration) §: Defined in Protected Audience
bengali (CSS value for <counter-style-name> ) §: Defined in CSS Counter Styles 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
DeviceMotionEventRotationRate.beta (WebIDL attribute) §: Defined in DeviceOrientation Event
DeviceMotionEventRotationRateInit.beta (WebIDL dictionary member) §: Defined in DeviceOrientation Event
DeviceOrientationEvent.beta (WebIDL attribute) §: Defined in DeviceOrientation Event
DeviceOrientationEventInit.beta (WebIDL dictionary member) §: Defined in DeviceOrientation Event
MLGemmOptions.beta (WebIDL dictionary member) §: Defined in Web Neural Network API
MLHardSigmoidOptions.beta (WebIDL dictionary member) §: Defined in Web Neural Network API
MLLinearOptions.beta (WebIDL dictionary member) §: Defined in Web Neural Network API
bevel (CSS value for stroke-linejoin ) §: Defined in CSS Fill and Stroke 3
CanvasPath.bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) (WebIDL operation) §: Defined in HTML
BFC (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
<bg-clip> (CSS type) §: Defined in CSS Backgrounds 4; Related terms: CSS value border, CSS value text
<bg-image> (CSS type) §: Defined in CSS Backgrounds 3
<bg-layer> (CSS type) §: Defined in CSS Backgrounds 3; Referenced in CSS Backgrounds 4
<bg-position> (CSS type) §: Defined in CSS Backgrounds 4 , CSS Backgrounds 3
<bg-size> (CSS type) §: Defined in CSS Backgrounds 3
bgcolor (markup attribute for body ) §: Defined in HTML
bgcolor (markup attribute for table ) §: Defined in HTML
bgcolor (markup attribute for td, th element ) §: Defined in HTML
bgcolor (markup attribute for tr ) §: Defined in HTML
Document.bgColor (WebIDL attribute) §: Defined in HTML
HTMLBodyElement.bgColor (WebIDL attribute) §: Defined in HTML
HTMLMarqueeElement.bgColor (WebIDL attribute) §: Defined in HTML
HTMLTableCellElement.bgColor (WebIDL attribute) §: Defined in HTML
HTMLTableElement.bgColor (WebIDL attribute) §: Defined in HTML
HTMLTableRowElement.bgColor (WebIDL attribute) §: Defined in HTML
"BGRA" (value for VideoPixelFormat WebIDL enumeration) §: Defined in WebCodecs
"bgra8unorm" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bgra8unorm-srgb" (value for GPUTextureFormat WebIDL enumeration) §: Defined in WebGPU
"bgra8unorm-storage" (value for GPUFeatureName WebIDL enumeration) §: Defined in WebGPU
"BGRX" (value for VideoPixelFormat WebIDL enumeration) §: Defined in WebCodecs
bgsound (markup element) §: Defined in HTML
bias (markup attribute for feConvolveMatrix ) §: Defined in Filter Effects 1
MLBatchNormalizationOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLConv2dOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLConvTranspose2dOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLGruCellOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLGruOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLInstanceNormalizationOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLLayerNormalizationOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLLstmCellOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
MLLstmOptions.bias (WebIDL dictionary member) §: Defined in Web Neural Network API
SVGFEConvolveMatrixElement.bias (WebIDL attribute) §: Defined in Filter Effects 1
biased fragment depth (algorithm) §: Defined in WebGPU
Bicameral (concept) §: Defined in Internationalization Glossary
GenerateBidOutput.bid (WebIDL dictionary member) §: Defined in Protected Audience
ReportingBrowserSignals.bid (WebIDL dictionary member) §: Defined in Protected Audience
ScoreAdOutput.bid (WebIDL dictionary member) §: Defined in Protected Audience
BiddingBrowserSignals.bidCount (WebIDL dictionary member) §: Defined in Protected Audience
GenerateBidOutput.bidCurrency (WebIDL dictionary member) §: Defined in Protected Audience
ReportingBrowserSignals.bidCurrency (WebIDL dictionary member) §: Defined in Protected Audience
ScoreAdOutput.bidCurrency (WebIDL dictionary member) §: Defined in Protected Audience
ScoringBrowserSignals.bidCurrency (WebIDL dictionary member) §: Defined in Protected Audience
BiddingBrowserSignals (WebIDL dictionary) §: Defined in Protected Audience; Related terms: BiddingBrowserSignals.adComponentsLimit, BiddingBrowserSignals.bidCount, BiddingBrowserSignals.dataVersion, BiddingBrowserSignals.forDebuggingOnlyInCooldownOrLockout, BiddingBrowserSignals.joinCount, BiddingBrowserSignals.prevWinsMs, BiddingBrowserSignals.recency, BiddingBrowserSignals.seller, BiddingBrowserSignals.topLevelSeller, BiddingBrowserSignals.topWindowHostname, BiddingBrowserSignals.wasmHelper; see also WebIDLPedia
ScoringBrowserSignals.biddingDurationMsec (WebIDL dictionary member) §: Defined in Protected Audience
GenerateBidInterestGroup.biddingLogicURL (WebIDL dictionary member) §: Defined in Protected Audience
GenerateBidInterestGroup.biddingWasmHelperURL (WebIDL dictionary member) §: Defined in Protected Audience
bidi isolate (concept) §: Defined in Internationalization Glossary
Bidi isolation (concept) §: Defined in Internationalization Glossary; Referenced in Secure Payment Confirmation
bidi paragraph (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Text 3, CSS Text 4
BiDi session (concept) §: Defined in WebDriver BiDi; Referenced in WebDriver
bidi-isolate (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Ruby Annotation Layout 1, CSS Text 3, CSS Text 4
bidi-override (CSS value for unicode-bidi ) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Ruby Annotation Layout 1
bidirectional text (concept) §: Defined in Internationalization Glossary
bidirectionality (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Overflow 3
bidirectionality (bidi) (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
big (markup element) §: Defined in HTML
String.big() (WebIDL operation) §: Defined in ECMAScript
Big5 (concept) §: Defined in Encoding; Referenced in HTML
Big5 decoder (concept) §: Defined in Encoding
Big5 encoder (concept) §: Defined in Encoding
BigInt (WebIDL interface) §: Defined in ECMAScript; Referenced in Web IDL; Related terms: new BigInt(value), BigInt.asIntN(bits, bigint), BigInt.asUintN(bits, bigint), BigInt.toLocaleString(reserved1, reserved2), BigInt.toString(radix), BigInt.valueOf(); see also WebIDLPedia
bigint (WebIDL interface) §: Defined in Web IDL; Referenced in WebRTC Encoded Transform; see also WebIDLPedia
BigInt type (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in JSON.parse source text access
%BigInt.prototype% (WebIDL interface) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API; see also WebIDLPedia
new BigInt(value) (WebIDL constructor) §: Defined in ECMAScript
%BigInt% (WebIDL interface) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Source Phase Imports; see also WebIDLPedia
BigInt64Array (WebIDL interface) §: Defined in Web IDL; Referenced in Web Cryptography API; see also WebIDLPedia
%BigInt64Array% (WebIDL interface) §: Defined in ECMAScript; see also WebIDLPedia
BigIntBitwiseOp (algorithm) §: Defined in ECMAScript
BigInteger (WebIDL type alias) §: Defined in Web Cryptography API; see also WebIDLPedia
BigUint64Array (WebIDL interface) §: Defined in Web IDL; Referenced in Web Cryptography API; see also WebIDLPedia
%BigUint64Array% (WebIDL interface) §: Defined in ECMAScript; see also WebIDLPedia
billing (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
binary data (concept for file entry ) §: Defined in File System; Referenced in File System Access
BinaryAnd (algorithm) §: Defined in ECMAScript
BinaryData (WebIDL type alias) §: Defined in CSS Font Loading 3; see also WebIDLPedia
BinaryOr (algorithm) §: Defined in ECMAScript
BinaryType (WebIDL enumeration) §: Defined in WebSockets; Referenced in Presentation API, WebRTC 1.0; Related terms: value arraybuffer, value blob; see also WebIDLPedia
PresentationConnection.binaryType (WebIDL attribute) §: Defined in Presentation API
RTCDataChannel.binaryType (WebIDL attribute) §: Defined in WebRTC 1.0
WebSocket.binaryType (WebIDL attribute) §: Defined in WebSockets; Referenced in WebRTC 1.0
BinaryXor (algorithm) §: Defined in ECMAScript
GPUBindingCommandsMixin.[[bind_groups]] (internal slot) §: Defined in WebGPU
Function.bind(thisArg, ...args) (WebIDL operation) §: Defined in ECMAScript
GPUPipelineLayout.[[bindGroupLayouts]] (internal slot) §: Defined in WebGPU
GPUPipelineLayoutDescriptor.bindGroupLayouts (WebIDL dictionary member) §: Defined in WebGPU
GPUBindGroupEntry.binding (WebIDL dictionary member) §: Defined in WebGPU
GPUBindGroupLayoutEntry.binding (WebIDL dictionary member) §: Defined in WebGPU
Binding Edge (concept) §: Defined in CSS Paged Media 3
BindThisValue(V) (algorithm for Function Environment Record ) §: Defined in ECMAScript
BiquadFilterNode (WebIDL interface) §: Defined in Web Audio API; Related terms: BiquadFilterNode.detune, BiquadFilterNode.frequency, BiquadFilterNode.gain, BiquadFilterNode.Q, BiquadFilterNode.type, new BiquadFilterNode(context, options), BiquadFilterNode.BiquadFilterNode(context, options), BiquadFilterNode.getFrequencyResponse(frequencyHz, magResponse, phaseResponse); see also WebIDLPedia
BiquadFilterNode.BiquadFilterNode(context, options) (WebIDL operation) §: Defined in Web Audio API
new BiquadFilterNode(context, options) (WebIDL constructor) §: Defined in Web Audio API
BiquadFilterOptions (WebIDL dictionary) §: Defined in Web Audio API; Related terms: BiquadFilterOptions.detune, BiquadFilterOptions.frequency, BiquadFilterOptions.gain, BiquadFilterOptions.Q, BiquadFilterOptions.type; see also WebIDLPedia
BiquadFilterType (WebIDL enumeration) §: Defined in Web Audio API; Related terms: value allpass, value bandpass, value highpass, value highshelf, value lowpass, value lowshelf, value notch, value peaking; see also WebIDLPedia
bisque (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
bisque (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
'bitmap' media group (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
UADataValues.bitness (WebIDL dictionary member) §: Defined in User-Agent Client Hints
AudioConfiguration.bitrate (WebIDL dictionary member) §: Defined in Media Capabilities
AudioEncoderConfig.bitrate (WebIDL dictionary member) §: Defined in WebCodecs
VideoConfiguration.bitrate (WebIDL dictionary member) §: Defined in Media Capabilities
VideoEncoderConfig.bitrate (WebIDL dictionary member) §: Defined in WebCodecs
BitrateMode (WebIDL enumeration) §: Defined in MediaStream Recording; Referenced in WebCodecs; Related terms: value constant, value variable; see also WebIDLPedia
AudioEncoderConfig.bitrateMode (WebIDL dictionary member) §: Defined in WebCodecs
VideoEncoderConfig.bitrateMode (WebIDL dictionary member) §: Defined in WebCodecs
MediaRecorderOptions.bitsPerSecond (WebIDL dictionary member) §: Defined in MediaStream Recording
black (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
black (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4 , CSS 2.2; Referenced in CSS Color 6, CSS Color 5, CSS Properties and Values API 1
blanchedalmond (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
blanchedalmond (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
:blank (CSS value for @page ) §: Defined in CSS Paged Media 3
:blank (CSS selector) §: Defined in Selectors 4
"ble" (value for AuthenticatorTransport WebIDL enumeration) §: Defined in Web Authentication
bleed (CSS descriptor for @page ) §: Defined in CSS Paged Media 3; Related terms: CSS value auto
CSSPageDescriptors.bleed (WebIDL attribute) §: Defined in CSSOM
GPUColorTargetState.blend (WebIDL dictionary member) §: Defined in WebGPU
<blend-mode> (CSS type) §: Defined in Compositing 2 , Compositing 1; Referenced in Filter Effects 1; Related terms: CSS value color, CSS value color-burn, CSS value color-dodge, CSS value darken, CSS value difference, CSS value exclusion, CSS value hard-light, CSS value hue, CSS value lighten, CSS value luminosity, CSS value multiply, CSS value normal, CSS value overlay, CSS value saturation, CSS value screen, CSS value soft-light
[[blendConstant]] (internal slot for RenderState ) §: Defined in WebGPU
XRCompositionLayer.blendTextureSourceAlpha (WebIDL attribute) §: Defined in WebXR Layers API 1
blink (markup element) §: Defined in HTML
blink (CSS value for text-decoration-line ) §: Defined in CSS Text Decoration 3 , CSS Text Decoration 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
blink (CSS value for text-decoration ) §: Defined in CSS 2.2
String.blink() (WebIDL operation) §: Defined in ECMAScript
"blob" (value for BinaryType WebIDL enumeration) §: Defined in WebSockets
"blob" (value for XMLHttpRequestResponseType WebIDL enumeration) §: Defined in XMLHttpRequest
AuthenticationExtensionsLargeBlobOutputs.blob (WebIDL dictionary member) §: Defined in Web Authentication
Blob (WebIDL interface) §: Defined in File API; Referenced in Fetch, File System, HTML, WebSockets, Local Font Access, Clipboard API and events, Contact Picker API, MediaStream Image Capture, Indexed DB 3.0, MediaStream Recording, Trusted Types, XMLHttpRequest; Related terms: concept get stream, Blob.size, Blob.type, new Blob(blobParts, options), Blob.arrayBuffer(), Blob.slice(start, end, contentType), Blob.stream(), Blob.text(); see also WebIDLPedia
blob URL (concept) §: Defined in File API; Referenced in Service Workers
blob URL entry (concept for url ) §: Defined in URL; Referenced in Fetch, HTML
blob URL entry (concept) §: Defined in File API; Referenced in HTML, URL; Related terms: concept environment, concept object
blob URL store (concept) §: Defined in File API; Referenced in HTML, URL
Body.blob() (WebIDL operation) §: Defined in Fetch
FontData.blob() (WebIDL operation) §: Defined in Local Font Access
PushMessageData.blob() (WebIDL operation) §: Defined in Push API
new Blob(blobParts, options) (WebIDL constructor) §: Defined in File API
BlobCallback (WebIDL callback) §: Defined in HTML
BlobEvent (WebIDL interface) §: Defined in MediaStream Recording; Related terms: BlobEvent.data, BlobEvent.timecode, new BlobEvent(type, eventInitDict); see also WebIDLPedia
new BlobEvent(type, eventInitDict) (WebIDL constructor) §: Defined in MediaStream Recording
BlobEventInit (WebIDL dictionary) §: Defined in MediaStream Recording; Related terms: BlobEventInit.data, BlobEventInit.timecode; see also WebIDLPedia
BlobPart (WebIDL type alias) §: Defined in File API; see also WebIDLPedia
BlobPropertyBag (WebIDL dictionary) §: Defined in File API; Related terms: BlobPropertyBag.endings, BlobPropertyBag.type; see also WebIDLPedia
'block' (grammar) §: Defined in Content Security Policy 3
block (CSS value for <display-outside>, display property ) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Positioned Layout 4, URL Fragment Text Directives, CSS Snapshot 2022, CSS Snapshot 2023, CSS Fonts 4, CSS Inline Layout 3, CSS Ruby Annotation Layout 1, CSS Transitions 2
block (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Scroll Snap 2, CSS Snapshot 2022, CSS Snapshot 2023, CSS Text 3, CSS Text 4, CSS 2.2
block (CSS value for anchor-size() ) §: Defined in CSS Anchor Positioning
block (CSS value for margin-trim ) §: Defined in CSS Box Model 4
block (CSS value for font-display descriptor of @font-face @rule ) §: Defined in CSS Fonts 4; Referenced in CSS Snapshot 2023
block (CSS value for footnote-display ) §: Defined in CSS GCPM 3
block (CSS value for footnote-policy ) §: Defined in CSS GCPM 3
"block" (value for ChildDisplayType WebIDL enumeration) §: Defined in CSS Layout API 1
block (CSS value for scroll-snap-type ) §: Defined in CSS Scroll Snap 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
block (CSS value for caret-shape ) §: Defined in CSS User Interface 4
block (concept) §: Defined in CSS 2.1
block (CSS value for display ) §: Defined in CSS 2.2
block (CSS value for scroll(), scroll-timeline-axis property, view-timeline-axis property ) §: Defined in Scroll-driven Animations
"block" (value for ScrollAxis WebIDL enumeration) §: Defined in Scroll-driven Animations
LayoutEdges.block (WebIDL attribute) §: Defined in CSS Layout API 1
ScrollIntoViewOptions.block (WebIDL dictionary member) §: Defined in CSSOM View
block at-rule (concept) §: Defined in CSS Syntax 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 5, CSS Cascading 6
block axis (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Grid Layout 3, Layout Instability, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Anchor Positioning, CSS Fragmentation 3, CSS Fragmentation 4, CSS Containment 3, CSS Flexbox 1, CSS Fonts 5, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Multicol 1, CSS Overflow 3, CSS Positioned Layout 3, CSS Pseudo-Elements 4, CSS Scroll Snap 1, CSS Sizing 3, CSS Sizing 4, CSS User Interface 4, CSS Values 4, Scroll-driven Animations
block bad port (concept) §: Defined in Fetch; Referenced in WebRTC 1.0, WebTransport
block box (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Positioned Layout 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Layout API 1, CSS Overflow 3, CSS Sizing 3, CSS Sizing 4, CSS Text 4, CSSOM View
block box (concept) §: Defined in CSS 2.1
block container (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Box Model 4, CSS Fragmentation 3, CSS Fragmentation 4, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Line Grid 1, CSS Lists 3, CSS Multicol 1, CSS Overflow 3, CSS Overflow 4, CSS Pseudo-Elements 4, CSS Ruby Annotation Layout 1, CSS Sizing 3, CSS Text 3, CSS Text 4, CSS Text Decoration 3, CSS Text Decoration 4, CSS Writing Modes 3, CSS Writing Modes 4
block container box (concept) §: Defined in CSS 2.1
block dimension (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
block end (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Anchor Positioning, CSS Fragmentation 3, CSS Fragmentation 4, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Logical Properties 1, CSS Overflow 3, CSSOM View
block flow direction (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Fragmentation 3, CSS Fragmentation 4, CSS Inline Layout 3, CSS Paged Media 3, CSS Scroll Anchoring 1, CSSOM View
block formatting context (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Layout API 1, CSS Multicol 1, CSS Overflow 4, CSS Pseudo-Elements 4, CSS Text 4, CSS Writing Modes 3, CSS Writing Modes 4
block formatting context root (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
block layout (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Grid Layout 1, CSS Grid Layout 2
FragmentResult.[[block size]] (internal slot) §: Defined in CSS Layout API 1
block size (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 Containment 3, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Layout API 1, CSS Overflow 4, CSS Rhythmic Sizing, CSS Sizing 3, CSS User Interface 4
block start (concept) §: Defined in CSS Writing Modes 3 , CSS Writing Modes 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Anchor Positioning, CSS Fragmentation 3, CSS Fragmentation 4, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Inline Layout 3, CSS Layout API 1, CSS Logical Properties 1, CSS Overflow 3, CSS Positioned Layout 3
<block-contents> (CSS type) §: Defined in CSS Syntax 3; Referenced in CSS Containment 3, CSS Nesting
<block-ellipsis> (CSS value for line-clamp ) §: Defined in CSS Overflow 4
block-ellipsis (CSS property) §: Defined in CSS Overflow 4; Referenced in CSS Overflow 3; Related terms: CSS value auto, CSS value none
block-end (CSS value for <inset-area>, inset-area property ) §: Defined in CSS Anchor Positioning
block-end (CSS value for margin-trim ) §: Defined in CSS Box Model 4
block-end (CSS value for box-snap ) §: Defined in CSS Line Grid 1
block-end (CSS value for float ) §: Defined in CSS Page Floats
block-end (CSS value for clear ) §: Defined in CSS Page Floats
block-level (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Positioned Layout 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Layout API 1, CSS Overflow 4, CSS Positioned Layout 3, CSS Pseudo-Elements 4, CSS Table 3, CSS Text 4, CSS Text Decoration 3, CSS Text Decoration 4, CSS Writing Modes 3, CSSOM View
block-level box (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Positioned Layout 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Fragmentation 3, CSS Fragmentation 4, CSS Flexbox 1, CSS Multicol 1, CSS Positioned Layout 3, CSS Sizing 4
block-level box (concept) §: Defined in CSS 2.1
block-level element (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
"block-like" (value for LayoutSizingMode WebIDL enumeration) §: Defined in CSS Layout API 1
block-self-end (CSS value for <inset-area>, inset-area property ) §: Defined in CSS Anchor Positioning
block-self-start (CSS value for <inset-area>, inset-area property ) §: Defined in CSS Anchor Positioning
block-size (CSS descriptor for @container ) §: Defined in CSS Containment 3
block-size (CSS property) §: Defined in CSS Logical Properties 1; Referenced in CSS Cascading 5, CSS Sizing 3, CSS Sizing 4, CSS Typed OM 1, CSSOM; Related terms: CSS value contain, CSS value fit-content, CSS value stretch
CSSPositionTryDescriptors.block-size (WebIDL attribute) §: Defined in CSS Anchor Positioning
block-start (CSS value for <inset-area>, inset-area property ) §: Defined in CSS Anchor Positioning
block-start (CSS value for margin-trim ) §: Defined in CSS Box Model 4
block-start (CSS value for box-snap ) §: Defined in CSS Line Grid 1
block-start (CSS value for float ) §: Defined in CSS Page Floats
block-start (CSS value for clear ) §: Defined in CSS Page Floats
block-step (CSS property) §: Defined in CSS Rhythmic Sizing; Referenced in CSS Typed OM 1
block-step-align (CSS property) §: Defined in CSS Rhythmic Sizing; Referenced in CSS Typed OM 1; Related terms: CSS value auto, CSS value center, CSS value down, CSS value end, CSS value nearest, CSS value start, CSS value up
block-step-insert (CSS property) §: Defined in CSS Rhythmic Sizing; Referenced in CSS Typed OM 1; Related terms: CSS value margin, CSS value padding
block-step-round (CSS property) §: Defined in CSS Rhythmic Sizing; Referenced in CSS Typed OM 1
block-step-size (CSS property) §: Defined in CSS Rhythmic Sizing; Referenced in CSS Typed OM 1, CSS Values 4
blockable mixed content (concept) §: Defined in Mixed Content; Referenced in Speculation Rules
BlockDeclarationInstantiation (algorithm) §: Defined in ECMAScript
blocked (event for IDBOpenDBRequest ) §: Defined in Indexed DB 3.0
SecurityPolicyViolationEvent.blockedURI (WebIDL attribute) §: Defined in Content Security Policy 3
SecurityPolicyViolationEventInit.blockedURI (WebIDL dictionary member) §: Defined in Content Security Policy 3
CSPViolationReportBody.blockedURL (WebIDL attribute) §: Defined in Content Security Policy 3
LayoutEdges.blockEnd (WebIDL attribute) §: Defined in CSS Layout API 1
LayoutConstraints.blockFragmentationOffset (WebIDL attribute) §: Defined in CSS Layout API 1
LayoutConstraintsOptions.blockFragmentationOffset (WebIDL dictionary member) §: Defined in CSS Layout API 1
LayoutConstraints.blockFragmentationType (WebIDL attribute) §: Defined in CSS Layout API 1
LayoutConstraintsOptions.blockFragmentationType (WebIDL dictionary member) §: Defined in CSS Layout API 1
BlockFragmentationType (WebIDL enumeration) §: Defined in CSS Layout API 1; Related terms: value column, value none, value page, value region; see also WebIDLPedia
blockify (concept) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Grid Layout 3, CSS Snapshot 2022, CSS Snapshot 2023, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Layout API 1, CSS Positioned Layout 3
blocking (markup attribute for link ) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0
blocking (markup attribute for style ) §: Defined in HTML
blocking (markup attribute for script ) §: Defined in HTML
"blocking" (value for RenderBlockingStatusType WebIDL enumeration) §: Defined in Resource Timing
HTMLLinkElement.blocking (WebIDL attribute) §: Defined in HTML
HTMLScriptElement.blocking (WebIDL attribute) §: Defined in HTML; Referenced in CSS View Transitions 2
HTMLStyleElement.blocking (WebIDL attribute) §: Defined in HTML; Referenced in CSS View Transitions 2
PerformanceLongAnimationFrameTiming.blockingDuration (WebIDL attribute) §: Defined in Long Animation Frames API
LayoutFragment.blockOffset (WebIDL attribute) §: Defined in CSS Layout API 1
blockquote (markup element) §: Defined in HTML; Referenced in HTML Accessibility API Mappings 1.0, ARIA in HTML, WAI-ARIA, WAI-ARIA; Related terms: markup attribute cite
CSSPositionTryDescriptors.blockSize (WebIDL attribute) §: Defined in CSS Anchor Positioning
FlacEncoderConfig.blockSize (WebIDL dictionary member) §: Defined in FLAC WebCodecs Registration
FragmentResult.blockSize (WebIDL attribute) §: Defined in CSS Layout API 1
FragmentResultOptions.blockSize (WebIDL dictionary member) §: Defined in CSS Layout API 1
LayoutFragment.blockSize (WebIDL attribute) §: Defined in CSS Layout API 1
ResizeObserverSize.blockSize (WebIDL attribute) §: Defined in Resize Observer
LayoutEdges.blockStart (WebIDL attribute) §: Defined in CSS Layout API 1
blue (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
blue (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4 , CSS 2.2; Referenced in CSS Linked Parameters, CSS Values 5, CSS Color 5, CSS Properties and Values API 1, CSS Syntax 3, CSS Transitions
GPUColorWrite.BLUE (WebIDL constant) §: Defined in WebGPU
Bluetooth (WebIDL interface) §: Defined in Web Bluetooth; Referenced in Web Bluetooth Scanning; Related terms: Bluetooth.[[activeScans]], Bluetooth.[[attributeInstanceMap]], Bluetooth.[[deviceInstanceMap]], Bluetooth.onavailabilitychanged, undefined[[referringDevice]], event availabilitychanged, Bluetooth.getAvailability(), Bluetooth.getDevices(), Bluetooth.requestDevice(options), Bluetooth.requestLEScan(options); see also WebIDLPedia
"bluetooth" (permission name) §: Defined in Web Bluetooth; Referenced in Web Bluetooth Scanning
"bluetooth" (value for ConnectionType WebIDL enumeration) §: Defined in Network Information API
Navigator.bluetooth (WebIDL attribute) §: Defined in Web Bluetooth
Bluetooth device (concept) §: Defined in Web Bluetooth; Referenced in Web Bluetooth Scanning
"bluetooth-le-scan" (value for PermissionName WebIDL enumeration) §: Defined in Web Bluetooth Scanning
BluetoothAdvertisingEvent (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothAdvertisingEvent.appearance, BluetoothAdvertisingEvent.device, BluetoothAdvertisingEvent.manufacturerData, BluetoothAdvertisingEvent.name, BluetoothAdvertisingEvent.rssi, BluetoothAdvertisingEvent.serviceData, BluetoothAdvertisingEvent.txPower, BluetoothAdvertisingEvent.uuids, new BluetoothAdvertisingEvent(type, init); see also WebIDLPedia
new BluetoothAdvertisingEvent(type, init) (WebIDL constructor) §: Defined in Web Bluetooth
BluetoothAdvertisingEventInit (WebIDL dictionary) §: Defined in Web Bluetooth; Related terms: BluetoothAdvertisingEventInit.appearance, BluetoothAdvertisingEventInit.device, BluetoothAdvertisingEventInit.manufacturerData, BluetoothAdvertisingEventInit.name, BluetoothAdvertisingEventInit.rssi, BluetoothAdvertisingEventInit.serviceData, BluetoothAdvertisingEventInit.txPower, BluetoothAdvertisingEventInit.uuids; see also WebIDLPedia
BluetoothCharacteristicProperties (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothCharacteristicProperties.authenticatedSignedWrites, BluetoothCharacteristicProperties.broadcast, BluetoothCharacteristicProperties.indicate, BluetoothCharacteristicProperties.notify, BluetoothCharacteristicProperties.read, BluetoothCharacteristicProperties.reliableWrite, BluetoothCharacteristicProperties.writableAuxiliaries, BluetoothCharacteristicProperties.write, BluetoothCharacteristicProperties.writeWithoutResponse; see also WebIDLPedia
BluetoothCharacteristicUUID (WebIDL type alias) §: Defined in Web Bluetooth; see also WebIDLPedia
BluetoothDataFilter (WebIDL interface) §: Defined in Web Bluetooth Scanning; Related terms: BluetoothDataFilter.dataPrefix, BluetoothDataFilter.mask, new BluetoothDataFilter(init); see also WebIDLPedia
new BluetoothDataFilter(init) (WebIDL constructor) §: Defined in Web Bluetooth Scanning
BluetoothDataFilterInit (WebIDL dictionary) §: Defined in Web Bluetooth; Referenced in Web Bluetooth Scanning; Related terms: concept canonicalizing, concept matches, concept strict subset, BluetoothDataFilterInit.dataPrefix, BluetoothDataFilterInit.mask; see also WebIDLPedia
BluetoothDescriptorUUID (WebIDL type alias) §: Defined in Web Bluetooth; see also WebIDLPedia
BluetoothDevice (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothDevice.[[allowedManufacturerData]], BluetoothDevice.[[allowedServices]], BluetoothDevice.[[context]], undefined[[gatt]], BluetoothDevice.id, BluetoothDevice.name, BluetoothDevice.[[representedDevice]], BluetoothDevice.[[returnedFromScans]], BluetoothDevice.[[watchAdvertisementsState]], BluetoothDevice.watchingAdvertisements, BluetoothDevice.forget(), BluetoothDevice.watchAdvertisements(options); see also WebIDLPedia
BluetoothDeviceEventHandlers (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothDeviceEventHandlers.onadvertisementreceived, BluetoothDeviceEventHandlers.ongattserverdisconnected, event advertisementreceived, event gattserverdisconnected; see also WebIDLPedia
BluetoothLEScan (WebIDL interface) §: Defined in Web Bluetooth Scanning; Related terms: BluetoothLEScan.acceptAllAdvertisements, BluetoothLEScan.active, BluetoothLEScan.filters, BluetoothLEScan.keepRepeatedDevices, BluetoothLEScan.stop(); see also WebIDLPedia
BluetoothLEScanFilter (WebIDL interface) §: Defined in Web Bluetooth Scanning; Related terms: BluetoothLEScanFilter.manufacturerData, BluetoothLEScanFilter.name, BluetoothLEScanFilter.namePrefix, BluetoothLEScanFilter.serviceData, BluetoothLEScanFilter.services, new BluetoothLEScanFilter(init); see also WebIDLPedia
new BluetoothLEScanFilter(init) (WebIDL constructor) §: Defined in Web Bluetooth Scanning
BluetoothLEScanFilterInit (WebIDL dictionary) §: Defined in Web Bluetooth; Referenced in Web Bluetooth Scanning; Related terms: concept canonicalizing, BluetoothLEScanFilterInit.manufacturerData, BluetoothLEScanFilterInit.name, BluetoothLEScanFilterInit.namePrefix, BluetoothLEScanFilterInit.serviceData, BluetoothLEScanFilterInit.services; see also WebIDLPedia
BluetoothLEScanOptions (WebIDL dictionary) §: Defined in Web Bluetooth Scanning; Related terms: BluetoothLEScanOptions.acceptAllAdvertisements, BluetoothLEScanOptions.filters, BluetoothLEScanOptions.keepRepeatedDevices; see also WebIDLPedia
BluetoothLEScanPermissionDescriptor (WebIDL dictionary) §: Defined in Web Bluetooth Scanning; Related terms: BluetoothLEScanPermissionDescriptor.acceptAllAdvertisements, BluetoothLEScanPermissionDescriptor.filters, BluetoothLEScanPermissionDescriptor.keepRepeatedDevices; see also WebIDLPedia
BluetoothLEScanPermissionResult (WebIDL interface) §: Defined in Web Bluetooth Scanning; Related terms: BluetoothLEScanPermissionResult.scans; see also WebIDLPedia
BluetoothManufacturerDataFilter (WebIDL interface) §: Defined in Web Bluetooth Scanning; Related terms: new BluetoothManufacturerDataFilter(init); see also WebIDLPedia
new BluetoothManufacturerDataFilter(init) (WebIDL constructor) §: Defined in Web Bluetooth Scanning
BluetoothManufacturerDataFilterInit (WebIDL dictionary) §: Defined in Web Bluetooth; Related terms: BluetoothManufacturerDataFilterInit.companyIdentifier; see also WebIDLPedia
BluetoothManufacturerDataMap (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothManufacturerDataMap.[[BackingMap]]; see also WebIDLPedia
BluetoothPermissionDescriptor (WebIDL dictionary) §: Defined in Web Bluetooth; Related terms: BluetoothPermissionDescriptor.acceptAllDevices, BluetoothPermissionDescriptor.deviceId, BluetoothPermissionDescriptor.filters, BluetoothPermissionDescriptor.optionalManufacturerData, BluetoothPermissionDescriptor.optionalServices; see also WebIDLPedia
BluetoothPermissionResult (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothPermissionResult.devices; see also WebIDLPedia
BluetoothPermissionStorage (WebIDL dictionary) §: Defined in Web Bluetooth; Related terms: BluetoothPermissionStorage.allowedDevices; see also WebIDLPedia
BluetoothRemoteGATTCharacteristic (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothRemoteGATTCharacteristic.properties, BluetoothRemoteGATTCharacteristic.[[representedCharacteristic]], BluetoothRemoteGATTCharacteristic.service, BluetoothRemoteGATTCharacteristic.uuid, BluetoothRemoteGATTCharacteristic.value, event characteristicvaluechanged, BluetoothRemoteGATTCharacteristic.getDescriptor(descriptor), BluetoothRemoteGATTCharacteristic.getDescriptors(descriptor), BluetoothRemoteGATTCharacteristic.readValue(), BluetoothRemoteGATTCharacteristic.startNotifications(), BluetoothRemoteGATTCharacteristic.stopNotifications(), BluetoothRemoteGATTCharacteristic.writeValue(value), BluetoothRemoteGATTCharacteristic.writeValueWithoutResponse(value), BluetoothRemoteGATTCharacteristic.writeValueWithResponse(value); see also WebIDLPedia
BluetoothRemoteGATTDescriptor (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothRemoteGATTDescriptor.characteristic, BluetoothRemoteGATTDescriptor.[[representedDescriptor]], BluetoothRemoteGATTDescriptor.uuid, BluetoothRemoteGATTDescriptor.value, BluetoothRemoteGATTDescriptor.readValue(), BluetoothRemoteGATTDescriptor.writeValue(value); see also WebIDLPedia
BluetoothRemoteGATTServer (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothRemoteGATTServer.[[activeAlgorithms]], BluetoothRemoteGATTServer.connected, BluetoothRemoteGATTServer.device, BluetoothRemoteGATTServer.connect(), BluetoothRemoteGATTServer.disconnect(), BluetoothRemoteGATTServer.getPrimaryService(service), BluetoothRemoteGATTServer.getPrimaryServices(service); see also WebIDLPedia
BluetoothRemoteGATTService (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothRemoteGATTService.device, BluetoothRemoteGATTService.isPrimary, BluetoothRemoteGATTService.[[representedService]], BluetoothRemoteGATTService.uuid, event serviceadded, event servicechanged, event serviceremoved, BluetoothRemoteGATTService.getCharacteristic(characteristic), BluetoothRemoteGATTService.getCharacteristics(characteristic), BluetoothRemoteGATTService.getIncludedService(service), BluetoothRemoteGATTService.getIncludedServices(service); see also WebIDLPedia
SerialPortFilter.bluetoothServiceClassId (WebIDL dictionary member) §: Defined in Web Serial API
SerialPortInfo.bluetoothServiceClassId (WebIDL dictionary member) §: Defined in Web Serial API
BluetoothServiceDataFilter (WebIDL interface) §: Defined in Web Bluetooth Scanning; Related terms: new BluetoothServiceDataFilter(init); see also WebIDLPedia
new BluetoothServiceDataFilter(init) (WebIDL constructor) §: Defined in Web Bluetooth Scanning
BluetoothServiceDataFilterInit (WebIDL dictionary) §: Defined in Web Bluetooth; Related terms: BluetoothServiceDataFilterInit.service; see also WebIDLPedia
BluetoothServiceDataMap (WebIDL interface) §: Defined in Web Bluetooth; Related terms: BluetoothServiceDataMap.[[BackingMap]]; see also WebIDLPedia
BluetoothServiceUUID (WebIDL type alias) §: Defined in Web Bluetooth; Referenced in Web Serial API; see also WebIDLPedia
BluetoothUUID (WebIDL interface) §: Defined in Web Bluetooth; Referenced in Web Serial API; Related terms: BluetoothUUID.canonicalUUID(alias), BluetoothUUID.getCharacteristic(name), BluetoothUUID.getDescriptor(name), BluetoothUUID.getService(name); see also WebIDLPedia
blueviolet (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
blueviolet (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
blur (event for HTMLElement, Window interface ) §: Defined in HTML
blur radius (concept for box-shadow ) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
blur() (CSS function for filter ) §: Defined in Filter Effects 1; Referenced in CSS Containment 2
HTMLOrSVGElement.blur() (WebIDL operation) §: Defined in HTML
Window.blur() (WebIDL operation) §: Defined in HTML
BoD (concept) §: Defined in W3C Process Document
body (concept) §: Defined in Fetch; Referenced in WebDriver BiDi, Attribution Reporting, Background Fetch, Fenced Frame, Loading Signed Exchanges, Reporting API, Service Workers; Related terms: concept clone, concept fully read, concept incrementally read, concept length, concept source, concept stream
body (concept for body with type ) §: Defined in Fetch; Referenced in XMLHttpRequest
body (concept for request ) §: Defined in Fetch; Referenced in Federated Credential Management API, HTML, Streams, WebDriver BiDi, Attribution Reporting, Background Fetch, Fenced Frame, Prefetch, Loading Signed Exchanges, Beacon, Content Security Policy 3, Service Workers, WebDriver, XMLHttpRequest
body (concept for response ) §: Defined in Fetch; Referenced in HTML, WebDriver BiDi, Background Fetch, Loading Signed Exchanges, Payment Method Manifest, Service Workers, XMLHttpRequest
body (markup element) §: Defined in HTML; Referenced in Compatibility, DOM, Compositing 2, Quirks Mode, Compositing 1, CSS Backgrounds 3, CSS Color Adjustment 1, CSS Containment 1, CSS Containment 2, CSS Display 3, CSS Overflow 3, CSS Scroll Snap 1, CSS Scrollbars Styling 1, CSS Writing Modes 3, CSS Writing Modes 4, CSSOM View, HTML Accessibility API Mappings 1.0, ARIA in HTML; Related terms: markup attribute alink, markup attribute bgcolor, markup attribute bottommargin, markup attribute leftmargin, markup attribute link, markup attribute marginheight, markup attribute marginwidth, markup attribute rightmargin, markup attribute text, markup attribute topmargin, markup attribute vlink
body (markup element) §: Defined in EPUB 3.3
body (concept for report ) §: Defined in Reporting API; Referenced in Network Reporting API, Crash Reporting, Scripting Policy, Deprecation Reporting, Intervention Reporting, Permissions Policy
Body.body (WebIDL attribute) §: Defined in Fetch
CSSParserAtRule.body (WebIDL attribute) §: Defined in CSS Parser API
CSSParserBlock.body (WebIDL attribute) §: Defined in CSS Parser API
CSSParserDeclaration.body (WebIDL attribute) §: Defined in CSS Parser API
CSSParserQualifiedRule.body (WebIDL attribute) §: Defined in CSS Parser API
Document.body (WebIDL attribute) §: Defined in HTML
Notification.body (WebIDL attribute) §: Defined in Notifications API
NotificationOptions.body (WebIDL dictionary member) §: Defined in Notifications API
Report.body (WebIDL attribute) §: Defined in Reporting API
RequestInit.body (WebIDL dictionary member) §: Defined in Fetch
Body (WebIDL interface) §: Defined in Fetch; Related terms: concept unusable, Body.body, Body.bodyUsed, Body.arrayBuffer(), Body.blob(), Body.formData(), Body.json(), Body.text(); see also WebIDLPedia
body info (concept for response ) §: Defined in Fetch; Referenced in HTML, Service Workers
body with type (concept) §: Defined in Fetch; Related terms: concept body, concept type
BodyInit (WebIDL type alias) §: Defined in Fetch; Referenced in Beacon; Related terms: concept extract, concept safely extract; see also WebIDLPedia
Body.bodyUsed (WebIDL attribute) §: Defined in Fetch
bold (CSS value for font-weight ) §: Defined in CSS Fonts 4 , CSS 2.2; Referenced in CSS Snapshot 2023, WebVTT: The Web Video Text Tracks Format
String.bold() (WebIDL operation) §: Defined in ECMAScript
bolder (CSS value for font-weight ) §: Defined in CSS Fonts 4 , CSS 2.2; Referenced in CSS Snapshot 2023, CSS Cascading 4, CSS Cascading 5
BOM sniff (concept) §: Defined in Encoding; Referenced in HTML
bookmark (value for rel attribute of a, rel attribute of area element ) §: Defined in HTML
bookmark-label (CSS property) §: Defined in CSS Generated Content 3; Referenced in CSS Typed OM 1; Related terms: CSS value <content-list>
bookmark-level (CSS property) §: Defined in CSS Generated Content 3; Referenced in CSS Typed OM 1; Related terms: CSS value none
bookmark-state (CSS property) §: Defined in CSS Generated Content 3; Referenced in CSS Typed OM 1; Related terms: CSS value closed, CSS value open
boolean (concept) §: Defined in Infra; Referenced in Federated Credential Management API, The Storage Access API, URL Pattern, Attribution Reporting, Fenced Frame, No-Vary-Search, Prefetch, Measure Memory API, Portals, HTML Sanitizer API, Prioritized Task Scheduling, Shared Storage API, Protected Audience, WebUSB API, Window Controls Overlay, Ambient Light Sensor, Web Application Manifest, Contact Picker API, CSS Properties and Values API 1, Generic Sensor API, JSON-LD 1.1 Processing Algorithms and API, JSON-LD 1.1 Framing, JSON-LD 1.1, MiniApp Manifest, Permissions, RDF Dataset Canonicalization, Verifiable Credential Data Integrity 1.0, Verifiable Credentials Data Model v2.0, Web Authentication, Web Neural Network API
boolean (WebIDL interface) §: Defined in Web IDL; Referenced in Console, DOM, Encoding, Federated Credential Management API, Fetch, CTAP, File System, Fullscreen API, HTML, Notifications API, Topics API, GPC, The Storage Access API, Storage, Streams, URL, URL Pattern, Gamepad Extensions, Web NFC API, IceTransport Extensions for WebRTC, WebAssembly JavaScript Interface: Content Security Policy, WebAssembly JavaScript Interface: Exception Handling, WebAssembly JavaScript Interface: Promise Integration, WebAssembly JavaScript Interface: Type Reflection, Web Bluetooth, Web Bluetooth Scanning, WebSockets, Iframe credentialless, Attribution Reporting, Background Sync, Cookie Store API, Direct Sockets API, Document Picture-in-Picture, File and Directory Entries API, Fenced Frame, File System Access, Input Device Capabilities, Early detection of input events, JS Self-Profiling API, Layout Instability, Prerendering Revamped, Page Lifecycle, preferCurrentTab, HTML Sanitizer API, Save Data API, Web Serial API, Accelerated Shape Detection in Images, Shared Storage API, Storage Buckets API, Private State Token API, Protected Audience, User-Agent Client Hints, Web Smart Card API, WebHID API, WebUSB API, Window Controls Overlay, Battery Status API, Beacon, Capture Handle - Bootstrapping Collaboration when Screensharing, Clipboard API and events, Contact Picker API, Credential Management 1, CSS Conditional 3, CSS Containment 2, CSS Font Loading 3, CSS Painting API 1, CSS Properties and Values API 1, CSS Regions 1, CSS Typed OM 1, CSSOM, CSSOM View, Encrypted Media Extensions, EPUB Reading Systems 3.3, Event Timing API, Gamepad, Generic Sensor API, Geolocation API, Geometry Interfaces 1, MediaStream Image Capture, Indexed DB 3.0, Intersection Observer, Media Capabilities, Media Source Extensions™, Media Capture and Streams, MediaStreamTrack Insertable Media Processing using Streams, Media Session, MediaStream Recording, DeviceOrientation Event, Payment Handler API, Payment Request API 1.1, Performance Timeline, Permissions Policy, Picture-in-Picture, Pointer Events, Presentation API, Proximity Sensor, Push API, Remote Playback API, Reporting API, requestIdleCallback() Cooperative Scheduling of Background Tasks, Screen Capture, Screen Wake Lock API, Secure Payment Confirmation, Selection API, Service Workers, Touch Events, Trusted Types, UI Events, Vibration API, VirtualKeyboard API, WebAssembly JavaScript Interface, Web Animations, Web Locks API, Web Share API, Web Audio API, Web Authentication, AV1 WebCodecs Registration, Opus WebCodecs Registration, WebCodecs, Web Cryptography API, WebGPU, Web MIDI API, Web Neural Network API, Identity for WebRTC 1.0, WebRTC Statistics, WebRTC 1.0, WebTransport, WebVTT: The Web Video Text Tracks Format, WebXR Augmented Reality 1, WebXR Hand Input 1, WebXR Device API, WebXR Layers API 1, Window Management, XMLHttpRequest, DNT; see also WebIDLPedia
Boolean (WebIDL interface) §: Defined in ECMAScript; Referenced in Generic Sensor API; Related terms: new Boolean(value), Boolean.toString(), Boolean.valueOf(); see also WebIDLPedia
boolean context (concept) §: Defined in Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
Boolean type (concept for ECMAScript ) §: Defined in ECMAScript; Referenced in ECMAScript Internationalization API
XPathResult.BOOLEAN_TYPE (WebIDL constant) §: Defined in DOM
<boolean-constant> (CSS type) §: Defined in CSS Conditional Values 1
%Boolean.prototype% (WebIDL interface) §: Defined in ECMAScript; see also WebIDLPedia
new Boolean(value) (WebIDL constructor) §: Defined in ECMAScript
%Boolean% (WebIDL interface) §: Defined in ECMAScript; Referenced in ECMAScript Async Explicit Resource Management, ECMAScript Explicit Resource Management, Source Phase Imports; see also WebIDLPedia
XPathResult.booleanValue (WebIDL attribute) §: Defined in DOM
Bopomofo characters (concept) §: Defined in CSS Ruby Annotation Layout 1; Referenced in CSS Text 4
border (CSS value for <bg-clip>, background-clip property ) §: Defined in CSS Backgrounds 4
border (markup attribute for input ) §: Defined in HTML
border (markup attribute for img ) §: Defined in HTML
border (markup attribute for object ) §: Defined in HTML
border (markup attribute for table ) §: Defined in HTML
border (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Display 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Conditional 3, CSS Multicol 1, CSS Sizing 3, CSS Speech 1, CSS Text 3, CSS Text 4, CSS Typed OM 1, CSS User Interface 4, Filter Effects 1; Related terms: CSS value dashed, CSS value dotted, CSS value double, CSS value groove, CSS value hidden, CSS value inset, CSS value medium, CSS value none, CSS value outset, CSS value ridge, CSS value solid, CSS value thick, CSS value thin
border (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Backgrounds 3, CSS Inline Layout 3, CSS Ruby Annotation Layout 1, CSS Text 4
"border" (value for CSSBoxType WebIDL enumeration) §: Defined in CSSOM View
HTMLImageElement.border (WebIDL attribute) §: Defined in HTML
HTMLObjectElement.border (WebIDL attribute) §: Defined in HTML
HTMLTableElement.border (WebIDL attribute) §: Defined in HTML
border area (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Backgrounds 3, CSS Fragmentation 3, CSS Fragmentation 4, Resize Observer
border box (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Borders and Box Decorations 4, CSS Shapes 2, CSS Backgrounds 3, CSS Positioned Layout 3, CSS Sizing 3, CSS Exclusions 1, CSSOM View, Resize Observer
border box (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border edge (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Backgrounds 3, CSS Containment 2, CSS Inline Layout 3, CSS Overflow 3, CSS Overflow 4, CSS Positioned Layout 3, CSS User Interface 4, CSSOM View, Scroll-driven Animations
border edge (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border properties (concept) §: Defined in CSS Box Model 3 , CSS Box Model 4
border width (concept) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border-block (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-block-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-block-end (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-block-end-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4, CSSOM
border-block-end-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-block-end-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-block-end-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-block-start (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-block-start-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4, CSSOM
border-block-start-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-block-start-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-block-start-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-block-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-block-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-bottom (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1
border-bottom-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Color 4, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4, CSSOM; Related terms: CSS value <color>
border-bottom-left-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS User Interface 4
border-bottom-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-bottom-right-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS User Interface 4
border-bottom-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value dashed, CSS value dashed, CSS value dotted, CSS value dotted, CSS value double, CSS value double, CSS value groove, CSS value groove, CSS value hidden, CSS value hidden, CSS value inset, CSS value inset, CSS value none, CSS value none, CSS value outset, CSS value outset, CSS value ridge, CSS value ridge, CSS value solid, CSS value solid
border-bottom-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Logical Properties 1, CSS Paged Media 3, CSS Positioned Layout 3, CSS Typed OM 1, CSS User Interface 4, CSS Values 4, Web Animations; Related terms: CSS value <length>, CSS value medium, CSS value medium, CSS value thick, CSS value thick, CSS value thin, CSS value thin
border-boundary (CSS property) §: Defined in CSS Round Display 1; Referenced in CSS Typed OM 1
border-box (CSS value for background-clip ) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border-box (CSS value for background-origin ) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border-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
border-box (CSS value for initial-letter-align ) §: Defined in CSS Inline Layout 3
border-box (CSS value for mask-clip ) §: Defined in CSS Masking 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border-box (CSS value for mask-origin ) §: Defined in CSS Masking 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border-box (CSS value for <shape-box>, shape-outside property ) §: Defined in CSS Shapes 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border-box (CSS value for box-sizing ) §: Defined in CSS Sizing 3 , CSS User Interface 3; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023
border-box (CSS value for transform-box ) §: Defined in CSS Transforms 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
border-box (CSS value for fill-origin ) §: Defined in CSS Fill and Stroke 3
border-box (CSS value for stroke-origin ) §: Defined in CSS Fill and Stroke 3
"border-box" (value for ResizeObserverBoxOptions WebIDL enumeration) §: Defined in Resize Observer
border-clip (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-clip-bottom (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-clip-left (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-clip-right (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-clip-top (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-collapse (CSS property) §: Defined in CSS Table 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Borders and Box Decorations 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Backgrounds 3, CSS Typed OM 1, CSS Values 3, CSS Values 4; Related terms: CSS value collapse, CSS value separate
border-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Backgrounds 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 5, CSS Color 4, CSS Color Adjustment 1, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4, CSS Values 3, CSS Values 4, Web Animations; Related terms: CSS value <color>, CSS value logical
border-end-end-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS User Interface 4
border-end-start-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS User Interface 4
border-image (CSS property) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Fragmentation 3, CSS Fragmentation 4, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Images 3, CSS Painting API 1, CSS Table 3, CSS Typed OM 1, Filter Effects 1, Mixed Content
border-image-outset (CSS property) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1, CSS User Interface 4
border-image-repeat (CSS property) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Images 3, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value repeat, CSS value round, CSS value space, CSS value stretch
border-image-slice (CSS property) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value fill
border-image-source (CSS property) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Table 3, CSS Typed OM 1, CSS User Interface 4
border-image-width (CSS property) §: Defined in CSS Backgrounds 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value auto
border-inline (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-inline-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-inline-end (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-inline-end-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4, CSSOM
border-inline-end-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-inline-end-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-inline-end-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-inline-start (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-inline-start-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4, CSSOM
border-inline-start-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-inline-start-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-inline-start-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1, CSS User Interface 4
border-inline-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-inline-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS Typed OM 1
border-left (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1
border-left-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Color 4, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4, CSSOM; Related terms: CSS value <color>
border-left-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-left-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value dashed, CSS value dashed, CSS value dotted, CSS value dotted, CSS value double, CSS value double, CSS value groove, CSS value groove, CSS value hidden, CSS value hidden, CSS value inset, CSS value inset, CSS value none, CSS value none, CSS value outset, CSS value outset, CSS value ridge, CSS value ridge, CSS value solid, CSS value solid
border-left-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Logical Properties 1, CSS Positioned Layout 3, CSS Transitions 2, CSS Typed OM 1, CSS User Interface 4, CSS Values 4, CSSOM View, Web Animations; Related terms: CSS value <length>, CSS value medium, CSS value medium, CSS value thick, CSS value thick, CSS value thin, CSS value thin
border-limit (CSS property) §: Defined in CSS Borders and Box Decorations 4; Related terms: CSS value all, CSS value bottom, CSS value corners, CSS value left, CSS value right, CSS value sides, CSS value top
border-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Fragmentation 3, CSS Fragmentation 4, CSS Logical Properties 1, CSS Masking 1, CSS Overflow 3, CSS Shapes 1, CSS Table 3, CSS Typed OM 1, CSS User Interface 3, CSS User Interface 4, Motion Path 1
border-right (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1
border-right-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Color 4, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4, CSSOM; Related terms: CSS value <color>
border-right-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-right-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value dashed, CSS value dashed, CSS value dotted, CSS value dotted, CSS value double, CSS value double, CSS value groove, CSS value groove, CSS value hidden, CSS value hidden, CSS value inset, CSS value inset, CSS value none, CSS value none, CSS value outset, CSS value outset, CSS value ridge, CSS value ridge, CSS value solid, CSS value solid
border-right-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Logical Properties 1, CSS Positioned Layout 3, CSS Typed OM 1, CSS User Interface 4, CSS Values 4, Web Animations; Related terms: CSS value <length>, CSS value medium, CSS value medium, CSS value thick, CSS value thick, CSS value thin, CSS value thin
border-spacing (CSS property) §: Defined in CSS Table 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Typed OM 1, CSS Values 4, CSS Writing Modes 3, CSS Writing Modes 4
border-start-end-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS User Interface 4
border-start-start-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Logical Properties 1; Referenced in CSS User Interface 4
<border-style> (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
<border-style> (CSS type) §: Defined in CSS 2.2; Related terms: CSS value dashed, CSS value dotted, CSS value double, CSS value groove, CSS value hidden, CSS value inset, CSS value none, CSS value outset, CSS value ridge, CSS value solid
border-style (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Backgrounds 4, CSS Borders and Box Decorations 4, Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Logical Properties 1, CSS Table 3, CSS Typed OM 1; Related terms: CSS value dashed, CSS value dashed, CSS value dotted, CSS value dotted, CSS value double, CSS value double, CSS value groove, CSS value groove, CSS value hidden, CSS value hidden, CSS value inset, CSS value inset, CSS value logical, CSS value none, CSS value none, CSS value outset, CSS value outset, CSS value ridge, CSS value ridge, CSS value solid, CSS value solid
border-top (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1, Web Animations
border-top-color (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Color 4, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4, CSSOM, Web Animations; Related terms: CSS value <color>
border-top-left-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS User Interface 4
border-top-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4
border-top-right-radius (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS User Interface 4
border-top-style (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Typed OM 1, CSS User Interface 4; Related terms: CSS value dashed, CSS value dashed, CSS value dotted, CSS value dotted, CSS value double, CSS value double, CSS value groove, CSS value groove, CSS value hidden, CSS value hidden, CSS value inset, CSS value inset, CSS value none, CSS value none, CSS value outset, CSS value outset, CSS value ridge, CSS value ridge, CSS value solid, CSS value solid
border-top-width (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Logical Properties 1, CSS Paged Media 3, CSS Positioned Layout 3, CSS Typed OM 1, CSS User Interface 4, CSS Values 4, CSSOM View, Web Animations; Related terms: CSS value <length>, CSS value medium, CSS value medium, CSS value thick, CSS value thick, CSS value thin, CSS value thin
<border-width> (CSS type) §: Defined in CSS 2.1 , CSS 2.2; Referenced in CSS Values 3, CSS Values 4; Related terms: CSS value <length>, CSS value medium, CSS value thick, CSS value thin
border-width (CSS property) §: Defined in CSS Backgrounds 3 , CSS 2.1 , CSS 2.2; Referenced in CSS Backgrounds 4, CSS Borders and Box Decorations 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Logical Properties 1, CSS Table 3, CSS Typed OM 1, CSS User Interface 4, CSS Values 3, CSS Values 4, Web Animations; Related terms: CSS value <length>, CSS value logical, CSS value medium, CSS value medium, CSS value thick, CSS value thick, CSS value thin, CSS value thin
ResizeObserverEntry.borderBoxSize (WebIDL attribute) §: Defined in Resize Observer
bordercolor (markup attribute for table ) §: Defined in HTML
borderless (concept for display mode ) §: Defined in Manifest Incubations
both (CSS value for animation-fill-mode ) §: Defined in CSS Animations 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Animations 2
both (CSS value for text-box-trim ) §: Defined in CSS Inline Layout 3
both (CSS value for clear ) §: Defined in CSS Page Floats , CSS 2.2
both (CSS value for scroll-snap-type ) §: Defined in CSS Scroll Snap 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
both (CSS value for wrap-flow ) §: Defined in CSS Exclusions 1
"both" (value for FillMode, PlaybackDirection enumeration WebIDL enumerations) §: Defined in Web Animations , Web Animations 2
"both" (value for MLRecurrentNetworkDirection WebIDL enumeration) §: Defined in Web Neural Network API
both-block (CSS value for clear ) §: Defined in CSS Page Floats
both-edges (CSS value for scrollbar-gutter ) §: Defined in CSS Overflow 3
both-inline (CSS value for clear ) §: Defined in CSS Page Floats
<bottom> (CSS type for clip ) §: Defined in CSS Masking 1
<bottom> (CSS type) §: Defined in CSS 2.1 , CSS 2.2; Related terms: CSS value auto
bottom (CSS value for border-limit ) §: Defined in CSS Borders and Box Decorations 4
"bottom" (value for CanvasTextBaseline WebIDL enumeration) §: Defined in HTML
bottom (CSS value for <inset-area>, inset-area property ) §: Defined in CSS Anchor Positioning
bottom (CSS value for anchor() ) §: Defined in CSS Anchor Positioning
bottom (CSS value for background-position ) §: Defined in CSS Backgrounds 3 , CSS 2.2; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
bottom (CSS value for baseline-shift, vertical-align property ) §: Defined in CSS Inline Layout 3; Referenced in CSS Box Alignment 3, CSS Ruby Annotation Layout 1
bottom (CSS value for float ) §: Defined in CSS Page Floats
bottom (CSS value for clear ) §: Defined in CSS Page Floats
bottom (CSS property) §: Defined in CSS Positioned Layout 3 , CSS 2.1 , CSS 2.2; Referenced in HTML, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Alignment 3, CSS Anchor Positioning, CSS Grid Layout 1, CSS Grid Layout 2, CSS Logical Properties 1, CSS Scroll Anchoring 1, CSS Table 3, CSS Typed OM 1, CSS User Interface 4, CSS Values 4, CSS Writing Modes 3, CSS Writing Modes 4, CSSOM; Related terms: CSS value auto, CSS value <length>, CSS value <percentage>
bottom (CSS value for transform-origin ) §: Defined in CSS Transforms 1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
bottom (CSS value for perspective-origin ) §: Defined in CSS Transforms 2
bottom (CSS value for vertical-align ) §: Defined in CSS 2.2
bottom (CSS value for caption-side ) §: Defined in CSS 2.2; Referenced in CSS Writing Modes 3, CSS Writing Modes 4
CSSPositionTryDescriptors.bottom (WebIDL attribute) §: Defined in CSS Anchor Positioning
bottom (WebIDL attribute for DOMRectReadOnly DOMRect ) §: Defined in Geometry Interfaces 1
DOMRectReadOnly.bottom (WebIDL attribute) §: Defined in Geometry Interfaces 1
@bottom-center (CSS @rule) §: Defined in CSS Paged Media 3
@bottom-left (CSS @rule) §: Defined in CSS Paged Media 3
@bottom-left-corner (CSS @rule) §: Defined in CSS Paged Media 3
@bottom-right (CSS @rule) §: Defined in CSS Paged Media 3
@bottom-right-corner (CSS @rule) §: Defined in CSS Paged Media 3
bottommargin (markup attribute for body ) §: Defined in HTML
bound function exotic object (concept for ECMAScript ) §: Defined in ECMAScript
IDBKeyRange.bound(lower, upper, lowerOpen, upperOpen) (WebIDL operation) §: Defined in Indexed DB 3.0
boundary (event for SpeechSynthesisUtterance ) §: Defined in Web Speech API
boundary point (concept) §: Defined in DOM; Referenced in HTML, URL Fragment Text Directives, CSS Custom Highlight API 1, Selection API; Related terms: concept after, concept before, concept equal, concept node, concept offset, concept position
"bounded-floor" (value for XRReferenceSpaceType WebIDL enumeration) §: Defined in WebXR Device API; Referenced in WebXR Layers API 1
BoundFunctionCreate (algorithm) §: Defined in ECMAScript; Referenced in ShadowRealm API
bounding box (concept) §: Defined in SVG 2; Referenced in Filter Effects 1
DetectedBarcode.boundingBox (WebIDL dictionary member) §: Defined in Accelerated Shape Detection in Images
DetectedFace.boundingBox (WebIDL dictionary member) §: Defined in Accelerated Shape Detection in Images
DetectedText.boundingBox (WebIDL dictionary member) §: Defined in Accelerated Text Detection in Images
FontMetrics.boundingBoxAscent (WebIDL attribute) §: Defined in Font Metrics API 1
FontMetrics.boundingBoxDescent (WebIDL attribute) §: Defined in Font Metrics API 1
FontMetrics.boundingBoxLeft (WebIDL attribute) §: Defined in Font Metrics API 1
FontMetrics.boundingBoxRight (WebIDL attribute) §: Defined in Font Metrics API 1
IntersectionObserverEntry.boundingClientRect (WebIDL attribute) §: Defined in Intersection Observer
IntersectionObserverEntryInit.boundingClientRect (WebIDL dictionary member) §: Defined in Intersection Observer
VirtualKeyboard.boundingRect (WebIDL attribute) §: Defined in VirtualKeyboard API
XRBoundedReferenceSpace.boundsGeometry (WebIDL attribute) §: Defined in WebXR Device API
FragmentResult.[[box]] (internal slot) §: Defined in CSS Layout API 1
LayoutChild.[[box]] (internal slot) §: Defined in CSS Layout API 1
<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 margin-box, CSS value padding-box, CSS value stroke-box, CSS value view-box
box (concept for CSS ) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Positioned Layout 4, Layout Instability, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Cascading 5, CSS Inline Layout 3, CSS Layout API 1, CSS Spatial Navigation 1, CSS Painting API 1, CSS Positioned Layout 3, CSS Scroll Anchoring 1, CSS Sizing 3, CSS Text Decoration 3, CSS Text Decoration 4, CSSOM View, Motion Path 1, Paint Timing, Scroll-driven Animations
BoxQuadOptions.box (WebIDL dictionary member) §: Defined in CSSOM View
ResizeObserverOptions.box (WebIDL dictionary member) §: Defined in Resize Observer
box alignment properties (concept) §: Defined in CSS Box Alignment 3; Referenced in CSS Grid Layout 3, CSS Snapshot 2022, CSS Snapshot 2023, CSS Grid Layout 1, CSS Grid Layout 2, CSS Positioned Layout 3
box edge (concept for box ) §: Defined in CSS Box Model 3 , CSS Box Model 4; Referenced in CSS Display 4, CSS Box Alignment 3, CSS Inline Layout 3
box fragment (concept) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Display 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Backgrounds 3, CSS Box Model 4, CSS Cascading 5, CSS Inline Layout 3, CSS Spatial Navigation 1, CSS Positioned Layout 3, CSS Pseudo-Elements 4, CSS Text Decoration 4, CSS Writing Modes 4, CSSOM View
box tree (concept for CSS ) §: Defined in CSS Display 4 , CSS Display 3; Referenced in CSS Positioned Layout 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Box Model 4, CSS Inline Layout 3, CSS Layout API 1, CSSOM View, Selectors 4
box-decoration-break (CSS property) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Borders and Box Decorations 4, CSS Snapshot 2022, CSS Snapshot 2023, CSS Backgrounds 3, CSS Box Model 4, CSS Text Decoration 4, CSS Typed OM 1, CSS Writing Modes 3, CSS Writing Modes 4; Related terms: CSS value clone, CSS value slice
box-shadow (CSS property) §: Defined in CSS Borders and Box Decorations 4 , CSS Backgrounds 3; Referenced in Compatibility, CSS Snapshot 2022, CSS Snapshot 2023, CSS Fragmentation 3, CSS Fragmentation 4, CSS Color Adjustment 1, CSS Conditional 3, CSS Inline Layout 3, CSS Overflow 3, CSS Pseudo-Elements 4, CSS Text Decoration 3, CSS Text Decoration 4, CSS Transitions, CSS Values 3, CSS Values 4, CSS Writing Modes 3, CSS Writing Modes 4, CSSOM, Filter Effects 1, Web Animations; Related terms: concept blur radius, concept horizontal offset, concept inner box-shadow, concept outer box-shadow, concept spread distance, concept vertical offset, CSS value none
box-shadow-blur (CSS property) §: Defined in CSS Borders and Box Decorations 4
box-shadow-color (CSS property) §: Defined in CSS Borders and Box Decorations 4
box-shadow-offset (CSS property) §: Defined in CSS Borders and Box Decorations 4; Related terms: CSS value 1st <length>, CSS value 2nd <length>, CSS value horizontal offset, CSS value none, CSS value vertical offset
box-shadow-position (CSS property) §: Defined in CSS Borders and Box Decorations 4; Related terms: CSS value inner box-shadow, CSS value inset, CSS value outer box-shadow, CSS value outset
box-shadow-spread (CSS property) §: Defined in CSS Borders and Box Decorations 4
box-sizing (CSS property) §: Defined in CSS Sizing 3 , CSS User Interface 3; Referenced in Compatibility, CSS Display 4, Quirks Mode, CSS Snapshot 2022, CSS Snapshot 2023, CSS Flexbox 1, CSS Inline Layout 3, CSS Sizing 4, CSS Table 3, CSS Typed OM 1, CSS User Interface 4, CSS Values 4; Related terms: CSS value border-box, CSS value content-box
box-snap (CSS property) §: Defined in CSS Line Grid 1; Referenced in CSS Typed OM 1; Related terms: CSS value baseline, CSS value block-end, CSS value block-start, CSS value center, CSS value last-baseline, CSS value none
box::border (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, Resize Observer
box::content (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
box::content height (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
box::content width (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
box::margin (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
box::padding (concept) §: Defined in CSS 2.1; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
BoxQuadOptions (WebIDL dictionary) §: Defined in CSSOM View; Related terms: BoxQuadOptions.box, BoxQuadOptions.relativeTo; see also WebIDLPedia
br (markup element) §: Defined in HTML; Referenced in CSS Display 4, CSS Display 3, HTML Accessibility API Mappings 1.0, ARIA in HTML, Input Events 2; Related terms: markup attribute clear
braille (CSS value for @media ) §: Defined in CSS 2.2 , Media Queries 4 , Media Queries 5; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
brand (concept for user agent ) §: Defined in User-Agent Client Hints
NavigatorUABrandVersion.brand (WebIDL dictionary member) §: Defined in User-Agent Client Hints
IdentityProviderAPIConfig.branding (WebIDL dictionary member) §: Defined in Federated Credential Management API
NavigatorUAData.brands (WebIDL attribute) §: Defined in User-Agent Client Hints
UADataValues.brands (WebIDL dictionary member) §: Defined in User-Agent Client Hints
UALowEntropyJSON.brands (WebIDL dictionary member) §: Defined in User-Agent Client Hints
XRWorldMeshFeature.breadth (WebIDL dictionary member) §: Defined in WebXR Meshing API 1; Related terms: XRWorldMeshFeature/breadth.breadth
breadth (WebIDL attribute for breadth dictionary member of XRWorldMeshFeature dictionary ) §: Defined in WebXR Meshing API 1
break (concept for iteration ) §: Defined in Infra; Referenced in DOM, Encoding, Fetch, Fullscreen API, HTML, MIME Sniffing, URL, URL Pattern, WebDriver BiDi, Web IDL, Attribution Reporting, Cookie Store API, Fenced Frame, Prefetch, URL Fragment Text Directives, Protected Audience, Clear Site Data, CSSOM, Fetch Metadata, DeviceOrientation Event, Payment Method Manifest, Publication Manifest, Service Workers, Web Neural Network API, WebTransport
SerialOutputSignals.break (WebIDL dictionary member) §: Defined in Web Serial API
break completion (concept for ECMAScript ) §: Defined in ECMAScript
break-after (CSS property) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Multicol 2, CSS Snapshot 2022, CSS Snapshot 2023, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Multicol 1, CSS Overflow 4, CSS Paged Media 3, CSS Regions 1, CSS Table 3, CSS Typed OM 1; Related terms: CSS value all, CSS value always, CSS value auto, CSS value avoid, CSS value avoid-column, CSS value avoid-page, CSS value avoid-region, CSS value column, CSS value left, CSS value page, CSS value recto, CSS value region, CSS value right, CSS value verso
break-all (CSS value for word-break ) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
break-before (CSS property) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Multicol 2, CSS Snapshot 2022, CSS Snapshot 2023, CSS Cascading 3, CSS Cascading 4, CSS Cascading 5, CSS Flexbox 1, CSS Grid Layout 1, CSS Grid Layout 2, CSS Multicol 1, CSS Overflow 4, CSS Paged Media 3, CSS Regions 1, CSS Table 3, CSS Typed OM 1; Related terms: CSS value all, CSS value always, CSS value auto, CSS value avoid, CSS value avoid-column, CSS value avoid-page, CSS value avoid-region, CSS value column, CSS value left, CSS value page, CSS value recto, CSS value region, CSS value right, CSS value verso
break-inside (CSS property) §: Defined in CSS Fragmentation 3 , CSS Fragmentation 4; Referenced in CSS Multicol 2, CSS Snapshot 2022, CSS Snapshot 2023, CSS Flexbox 1, CSS Layout API 1, CSS Multicol 1, CSS Overflow 4, CSS Paged Media 3, CSS Regions 1, CSS Table 3, CSS Typed OM 1; Related terms: CSS value auto, CSS value avoid, CSS value avoid-column, CSS value avoid-page, CSS value avoid-region
break-spaces (CSS value for white-space ) §: Defined in CSS Text 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, CSS Text 4
break-spaces (CSS value for white-space-collapse ) §: Defined in CSS Text 4
break-word (CSS value for word-break ) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
break-word (CSS value for overflow-wrap ) §: Defined in CSS Text 3 , CSS Text 4; Referenced in CSS Snapshot 2022, CSS Snapshot 2023, WebVTT: The Web Video Text Tracks Format
MemoryMeasurement.breakdown (WebIDL dictionary member) §: Defined in Measure Memory API
FragmentResultOptions.breakToken (WebIDL dictionary member) §: Defined in CSS Layout API 1
LayoutFragment.breakToken (WebIDL attribute) §: Defined in CSS Layout API 1
BreakToken (WebIDL interface) §: Defined in CSS Layout API 1; Related terms: BreakToken.childBreakTokens, BreakToken.data; see also WebIDLPedia
BreakTokenOptions (WebIDL dictionary) §: Defined in CSS Layout API 1; Related terms: BreakTokenOptions.childBreakTokens, BreakTokenOptions.data; see also WebIDLPedia
ChildBreakToken.breakType (WebIDL attribute) §: Defined in CSS Layout API 1
BreakType (WebIDL enumeration) §: Defined in CSS Layout API 1; Related terms: value column, value line, value none, value page, value region; see also WebIDLPedia
MediaTrackCapabilities.brightness (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackConstraintSet.brightness (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackSettings.brightness (WebIDL dictionary member) §: Defined in MediaStream Image Capture
MediaTrackSupportedConstraints.brightness (WebIDL dictionary member) §: Defined in MediaStream Image Capture
brightness() (CSS function for filter ) §: Defined in Filter Effects 1
BluetoothCharacteristicProperties.broadcast (WebIDL attribute) §: Defined in Web Bluetooth
BroadcastChannel (WebIDL interface) §: Defined in HTML; Referenced in High Resolution Time; Related terms: BroadcastChannel.name, BroadcastChannel.onmessage, BroadcastChannel.onmessageerror, event message, event messageerror, BroadcastChannel.close(), BroadcastChannel.postMessage(message); see also WebIDLPedia
brown (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
brown (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
browser (concept for modules ) §: Defined in WebDriver BiDi
browser (concept for display mode ) §: Defined in Web Application Manifest; Referenced in Media Queries 5
browser (CSS value for display-mode descriptor of @media @rule ) §: Defined in Media Queries 5
browser (concept for display surface ) §: Defined in Screen Capture
"browser" (value for DisplayCaptureSurfaceType WebIDL enumeration) §: Defined in Screen Capture
browser fingerprinting (concept) §: Defined in Mitigating Browser Fingerprinting in Web Specifications
browser UI (concept for user navigation involvement ) §: Defined in HTML
browser.close (concept for [[commands]] ) §: Defined in WebDriver BiDi
browser.createUserContext (concept for [[commands]] ) §: Defined in WebDriver BiDi
browser.getUserContexts (concept for [[commands]] ) §: Defined in WebDriver BiDi
browser.removeUserContext (concept for [[commands]] ) §: Defined in WebDriver BiDi
BrowserCaptureMediaStreamTrack (WebIDL interface) §: Defined in Region Capture; Related terms: BrowserCaptureMediaStreamTrack.clone(), BrowserCaptureMediaStreamTrack.cropTo(), BrowserCaptureMediaStreamTrack.restrictTo(); see also WebIDLPedia
browsing context (concept for Window ) §: Defined in HTML; Referenced in WebDriver BiDi, Iframe credentialless, Client Hints Infrastructure, Fenced Frame, File System Access, Shared Storage API, Protected Audience, CSSOM View, Long Tasks API, Media Session, Paint Timing, Permissions
browsing context (concept) §: Defined in HTML; Referenced in DOM, Filter Effects 2, Notifications API, Navigational-Tracking Mitigations, The Capture-Handle Actions Mechanism, Web NFC API, WebDriver BiDi, Background Sync, Capability Delegation, Fenced Frame, Shared Storage API, Clear Site Data, Compute Pressure 1, Contact Picker API, Filter Effects 1, Generic Sensor API, Indexed DB 3.0, Region Capture, Media Queries 5, Media Session, Picture-in-Picture, Presentation API, Remote Playback API, Screen Capture, Screen Orientation, Service Workers, Web Locks API, WebDriver; Related terms: concept top-level traversable
browsing context (concept for Document ) §: Defined in HTML; Referenced in DOM, The Storage Access API, WebDriver BiDi, Fenced Frame, Prefetch, Prerendering Revamped, URL Fragment Text Directives, Shared Storage API, Largest Contentful Paint, Media Session, Mixed Content, Paint Timing, Pointer Lock 2.0, Referrer Policy, Screen Orientation, Selection API
browsing context event map (concept for event ) §: Defined in WebDriver BiDi
browsing context id (concept) §: Defined in WebDriver BiDi; Referenced in Web Bluetooth
browsing context tree discarded (concept) §: Defined in WebDriver BiDi
browsing-context connected (concept) §: Defined in HTML; Referenced in Portals
browsingContext (concept for modules ) §: Defined in WebDriver BiDi
browsingContext.activate (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.captureScreenshot (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.close (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.create (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.getTree (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.handleUserPrompt (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.locateNodes (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.navigate (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.print (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.reload (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.setViewport (concept for [[commands]] ) §: Defined in WebDriver BiDi
browsingContext.traverseHistory (concept for [[commands]] ) §: Defined in WebDriver BiDi
BrowsingTopic (WebIDL dictionary) §: Defined in Topics API; Related terms: BrowsingTopic.configVersion, BrowsingTopic.modelVersion, BrowsingTopic.taxonomyVersion, BrowsingTopic.topic, BrowsingTopic.version; see also WebIDLPedia
browsingtopics (markup attribute for iframe ) §: Defined in Topics API
HTMLIFrameElement.browsingTopics (WebIDL attribute) §: Defined in Topics API
RequestInit.browsingTopics (WebIDL dictionary member) §: Defined in Topics API
Document.browsingTopics(options) (WebIDL operation) §: Defined in Topics API
BrowsingTopicsOptions (WebIDL dictionary) §: Defined in Topics API; Related terms: BrowsingTopicsOptions.skipObservation; see also WebIDLPedia
"bt2020" (value for VideoColorPrimaries WebIDL enumeration) §: Defined in WebCodecs
"bt2020-ncl" (value for VideoMatrixCoefficients WebIDL enumeration) §: Defined in WebCodecs
"bt470bg" (value for VideoColorPrimaries WebIDL enumeration) §: Defined in WebCodecs
"bt470bg" (value for VideoMatrixCoefficients WebIDL enumeration) §: Defined in WebCodecs
"bt709" (value for VideoColorPrimaries WebIDL enumeration) §: Defined in WebCodecs
"bt709" (value for VideoTransferCharacteristics WebIDL enumeration) §: Defined in WebCodecs
"bt709" (value for VideoMatrixCoefficients WebIDL enumeration) §: Defined in WebCodecs
WindowOrWorkerGlobalScope.btoa(data) (WebIDL operation) §: Defined in HTML
MLGemmOptions.bTranspose (WebIDL dictionary member) §: Defined in Web Neural Network API
Event.bubbles (WebIDL attribute) §: Defined in DOM; Referenced in Fullscreen API, HTML, Captured Mouse Events, Web Bluetooth, Cookie Store API, Web Serial API, Content Security Policy 3, Indexed DB 3.0, Picture-in-Picture, Pointer Events, UI Events, XMLHttpRequest
EventInit.bubbles (WebIDL dictionary member) §: Defined in DOM
Event.BUBBLING_PHASE (WebIDL constant) §: Defined in DOM; Referenced in UI Events
bucket file system (concept) §: Defined in File System; Referenced in File System Access
%TypedArray%.buffer (WebIDL attribute) §: Defined in ECMAScript
AudioBufferSourceNode.buffer (WebIDL attribute) §: Defined in Web Audio API
AudioBufferSourceOptions.buffer (WebIDL dictionary member) §: Defined in Web Audio API
ConvolverNode.buffer (WebIDL attribute) §: Defined in Web Audio API
ConvolverOptions.buffer (WebIDL dictionary member) §: Defined in Web Audio API
DataView.buffer (WebIDL attribute) §: Defined in ECMAScript
GPUBindGroupLayoutEntry.buffer (WebIDL dictionary member) §: Defined in WebGPU; Referenced in WebGPU Shading Language
GPUBufferBinding.buffer (WebIDL dictionary member) §: Defined in WebGPU
GPUImageCopyBuffer.buffer (WebIDL dictionary member) §: Defined in WebGPU
Memory.buffer (WebIDL attribute) §
Memory.buffer (WebIDL attribute) §
Memory.buffer (WebIDL attribute) §
Memory.buffer (WebIDL attribute) §
Memory.buffer (WebIDL attribute) §
Memory.buffer (WebIDL attribute) §: Defined in WebAssembly JavaScript Interface: Content Security Policy , WebAssembly JavaScript Interface: Exception Handling , WebAssembly JavaScript Interface: Promise Integration , WebAssembly JavaScript Interface: Type Reflection , WebAssembly JavaScript Interface: Threading , WebAssembly JavaScript Interface; Referenced in Streams, Web IDL
ConvolverNode.buffer attribute (WebIDL attribute) §: Defined in Web Audio API
AudioBufferSourceNode.[[buffer set]] (internal slot) §: Defined in Web Audio API
buffer source types (concept) §: Defined in Web IDL; Referenced in Indexed DB 3.0, Web Authentication
buffer types (concept) §: Defined in Web IDL
buffer view types (concept) §: Defined in Web IDL
HTMLMediaElement.buffered (WebIDL attribute) §: Defined in HTML; Referenced in Media Source Extensions™, Media Capture and Streams, Open Screen Protocol
PerformanceObserverInit.buffered (WebIDL dictionary member) §: Defined in Performance Timeline; Referenced in Event Timing API
ReportingObserverOptions.buffered (WebIDL dictionary member) §: Defined in Reporting API
SourceBuffer.buffered (WebIDL attribute) §: Defined in Media Source Extensions™
RTCDataChannel.bufferedAmount (WebIDL attribute) §: Defined in WebRTC 1.0
WebSocket.bufferedAmount (WebIDL attribute) §: Defined in WebSockets; Referenced in Streams
bufferedamountlow (event for RTCDataChannel ) §: Defined in WebRTC 1.0
RTCDataChannel.bufferedAmountLowThreshold (WebIDL attribute) §: Defined in WebRTC 1.0
bufferedchange (event) §: Defined in Media Source Extensions™
BufferedChangeEvent (WebIDL interface) §: Defined in Media Source Extensions™; Related terms: BufferedChangeEvent.addedRanges, BufferedChangeEvent.removedRanges, WebIDL constructor constructor(); see also WebIDLPedia
BufferedChangeEventInit (WebIDL dictionary) §: Defined in Media Source Extensions™; Related terms: BufferedChangeEventInit.addedRanges, BufferedChangeEventInit.removedRanges; see also WebIDLPedia
:buffering (CSS selector) §: Defined in Selectors 4
GPUVertexState.buffers (WebIDL dictionary member) §: Defined in WebGPU
ScriptProcessorNode.bufferSize (WebIDL attribute) §: Defined in Web Audio API
SerialOptions.bufferSize (WebIDL dictionary member) §: Defined in Web Serial API
BufferSource (WebIDL type alias) §: Defined in Web IDL; Referenced in Fetch, File System, Web NFC API, WebAssembly JavaScript Interface: Content Security Policy, WebAssembly JavaScript Interface: Exception Handling, WebAssembly JavaScript Interface: Promise Integration, WebAssembly JavaScript Interface: Type Reflection, Web Bluetooth, WebSockets, Compression Streams, Direct Sockets API, Web Serial API, Web Smart Card API, Secure Curves in the Web Cryptography API, WebHID API, WebUSB API, Encrypted Media Extensions, File API, Media Source Extensions™, Push API, Secure Payment Confirmation, WebAssembly JavaScript Interface, Web Authentication, WebCodecs, Web Cryptography API, WebRTC Encoded Transform, WebTransport; Related terms: concept byte length, concept detached, concept underlying buffer; see also WebIDLPedia
build a URL pattern from a Web IDL value (concept) §: Defined in URL Pattern; Referenced in Service Workers
build a URL pattern from an Infra value (concept) §: Defined in URL Pattern; Referenced in Speculation Rules
build a URLPattern object from a Web IDL value (concept) §: Defined in URL Pattern
MLGraphBuilder.build(outputs) (WebIDL operation) §: Defined in Web Neural Network API
MLActivation.[[builder]] (internal slot) §: Defined in Web Neural Network API
MLOperand.[[builder]] (internal slot) §: Defined in Web Neural Network API
BuiltinCallOrConstruct (algorithm) §: Defined in ECMAScript
"bulk" (value for USBEndpointType WebIDL enumeration) §: Defined in WebUSB API
bullets (CSS value for speak-as descriptor of @counter-style @rule ) §: Defined in CSS Counter Styles 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
RTCConfiguration.bundlePolicy (WebIDL dictionary member) §: Defined in WebRTC 1.0
burlywood (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
burlywood (CSS value for <color>, <named-color> type ) §: Defined in CSS Color 4
butt (CSS value for stroke-linecap ) §: Defined in CSS Fill and Stroke 3
button (value for type attribute of input element ) §: Defined in HTML
button (markup element) §: Defined in HTML; Referenced in CSS Display 4, Fenced Frame, CSS Color Adjustment 1, CSS Display 3, CSS Sizing 3, HTML Accessibility API Mappings 1.0, ARIA in HTML, Selectors 4, WAI-ARIA, WAI-ARIA; Related terms: concept form owner, markup attribute action, markup attribute autocomplete, markup attribute disabled, markup attribute enctype, markup attribute form, markup attribute formaction, markup attribute formenctype, markup attribute formmethod, markup attribute formnovalidate, markup attribute formtarget, markup attribute method, markup attribute name, markup attribute novalidate, markup attribute target, markup attribute type, markup attribute value
button (value for type attribute of button element ) §: Defined in HTML
button (CSS value for appearance ) §: Defined in CSS User Interface 4
Button (state of markup element for input ) §: Defined in HTML
MouseEvent.button (WebIDL attribute) §: Defined in UI Events
MouseEventInit.button (WebIDL dictionary member) §: Defined in UI Events
ButtonBorder (CSS value for <color>, <system-color> type ) §: Defined in CSS Color 4
ButtonFace (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
ButtonFace (CSS value for <color>, <system-color> type ) §: Defined in CSS Color 4
ButtonHighlight (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
ButtonHighlight (CSS value for <color>, <deprecated-color> type ) §: Defined in CSS Color 4
Gamepad.buttons (WebIDL attribute) §: Defined in Gamepad
MouseEvent.buttons (WebIDL attribute) §: Defined in UI Events
MouseEventInit.buttons (WebIDL dictionary member) §: Defined in UI Events
ButtonShadow (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
ButtonShadow (CSS value for <color>, <deprecated-color> type ) §: Defined in CSS Color 4
ButtonText (concept) §: Defined in CSS Color 3; Referenced in CSS Snapshot 2022, CSS Snapshot 2023
ButtonText (CSS value for <color>, <system-color> type ) §: Defined in CSS Color 4
"buyer" (value for FenceReportingDestination WebIDL enumeration) §: Defined in Fenced Frame; Referenced in Protected Audience
AuctionAd.buyerAndSellerReportingId (WebIDL dictionary member) §: Defined in Protected Audience
ReportingBrowserSignals.buyerAndSellerReportingId (WebIDL dictionary member) §: Defined in Protected Audience
AuctionAd.buyerReportingId (WebIDL dictionary member) §: Defined in Protected Audience
ReportWinBrowserSignals.buyerReportingId (WebIDL dictionary member) §: Defined in Protected Audience
by (CSS value for <by-to>, shape() function ) §: Defined in CSS Shapes 2
by computed value (concept) §: Defined in Web Animations; Referenced in CSS Grid Layout 1, CSS Grid Layout 2, CSS Properties and Values API 1
<by-to> (CSS type for shape() ) §: Defined in CSS Shapes 2; Related terms: CSS value by, CSS value to
"byob" (value for ReadableStreamReaderMode WebIDL enumeration) §: Defined in Streams
BYOB reader (concept) §: Defined in Streams; Referenced in WebTransport
ReadableByteStreamController.byobRequest (WebIDL attribute) §: Defined in Streams
byte (concept) §: Defined in Infra; Referenced in Encoding, MIME Sniffing, URL, Web NFC API, Cookie Store API, File API, Indexed DB 3.0; Related terms: concept value
byte (WebIDL interface) §: Defined in Web IDL; Referenced in Web Bluetooth, WebHID API, Indexed DB 3.0; see also WebIDLPedia
EncodedAudioChunk.[[byte length]] (internal slot) §: Defined in WebCodecs
EncodedVideoChunk.[[byte length]] (internal slot) §: Defined in WebCodecs
byte length (concept for BufferSource ) §: Defined in Web IDL; Referenced in Encoding, File System, Streams, Direct Sockets API, Web Serial API, Service Workers, Web Audio API, Web Neural Network API, WebTransport
byte less than (concept) §: Defined in Infra; Referenced in Fetch, Indexed DB 3.0, XMLHttpRequest
byte sequence (concept) §: Defined in Infra; Referenced in Encoding, Fetch, File System, HTML, MIME Sniffing, Streams, Source Map, URL, Web NFC API, WebDriver BiDi, Web IDL, Attribution Reporting, Background Fetch, Cookie Store API, Direct Sockets API, File System Access, User Agent Interaction with Related Website Sets, Local Font Access, Speculation Rules, Web Serial API, Private State Token API, Protected Audience, WebHID API, Loading Signed Exchanges, Web Application Manifest, Content Security Policy 3, File API, Indexed DB 3.0, MiniApp Packaging, Payment Method Manifest, Push API, Reporting API, Service Workers, Verifiable Credential Data Integrity 1.0, Verifiable Credentials Data Model v2.0, Web Authentication, WebCodecs, Web Cryptography API, WebTransport, XMLHttpRequest; Related terms: concept as a body, concept length, concept percent-decode, concept prefix, concept starts with
Byte Stream Formats (concept) §: Defined in Media Source Extensions™
byte value (concept for ECMAScript ) §: Defined in ECMAScript
byte-case-insensitive (concept) §: Defined in Infra; Referenced in Fetch, WebDriver BiDi, Attribution Reporting, Background Fetch, Loading Signed Exchanges, WebAssembly Web API
byte-lowercase (concept) §: Defined in Infra; Referenced in Fetch, WebDriver BiDi, Client Hints Infrastructure, Scripting Policy, User Preference Media Features Client Hints Headers
byte-uppercase (concept) §: Defined in Infra; Referenced in Fetch, XMLHttpRequest
%TypedArray%.byteLength (WebIDL attribute) §: Defined in ECMAScript
ArrayBuffer.byteLength (WebIDL attribute) §: Defined in ECMAScript
DataView.byteLength (WebIDL attribute) §: Defined in ECMAScript
EncodedAudioChunk.byteLength (WebIDL attribute) §: Defined in WebCodecs
EncodedVideoChunk.byteLength (WebIDL attribute) §: Defined in WebCodecs
SharedArrayBuffer.byteLength (WebIDL attribute) §: Defined in ECMAScript
ByteLengthQueuingStrategy (WebIDL interface) §: Defined in Streams; Related terms: ByteLengthQueuingStrategy.highWaterMark, ByteLengthQueuingStrategy.size, new ByteLengthQueuingStrategy(init); see also WebIDLPedia
new ByteLengthQueuingStrategy(init) (WebIDL constructor) §: Defined in Streams
ByteListBitwiseOp (algorithm) §: Defined in ECMAScript
ByteListEqual (algorithm) §: Defined in ECMAScript
%TypedArray%.byteOffset (WebIDL attribute) §: Defined in ECMAScript
DataView.byteOffset (WebIDL attribute) §: Defined in ECMAScript
"bytes" (value for ReadableStreamType WebIDL enumeration) §: Defined in Streams
MemoryBreakdownEntry.bytes (WebIDL dictionary member) §: Defined in Measure Memory API
MemoryMeasurement.bytes (WebIDL dictionary member) §: Defined in Measure Memory API
TypedArray.BYTES_PER_ELEMENT (WebIDL attribute) §: Defined in ECMAScript
WebTransportSendStreamStats.bytesAcknowledged (WebIDL dictionary member) §: Defined in WebTransport
RTCIceCandidatePairStats.bytesDiscardedOnSend (WebIDL dictionary member) §: Defined in WebRTC Statistics
WebTransportConnectionStats.bytesLost (WebIDL dictionary member) §: Defined in WebTransport
GPUImageDataLayout.bytesPerRow (WebIDL dictionary member) §: Defined in WebGPU
WebTransportReceiveStreamStats.bytesRead (WebIDL dictionary member) §: Defined in WebTransport
RTCDataChannelStats.bytesReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCIceCandidatePairStats.bytesReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCInboundRtpStreamStats.bytesReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCTransportStats.bytesReceived (WebIDL dictionary member) §: Defined in WebRTC Statistics
WebTransportConnectionStats.bytesReceived (WebIDL dictionary member) §: Defined in WebTransport
WebTransportReceiveStreamStats.bytesReceived (WebIDL dictionary member) §: Defined in WebTransport
RTCDataChannelStats.bytesSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCIceCandidatePairStats.bytesSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCSentRtpStreamStats.bytesSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
RTCTransportStats.bytesSent (WebIDL dictionary member) §: Defined in WebRTC Statistics
WebTransportConnectionStats.bytesSent (WebIDL dictionary member) §: Defined in WebTransport
WebTransportSendStreamStats.bytesSent (WebIDL dictionary member) §: Defined in WebTransport
ByteString (WebIDL interface) §: Defined in Web IDL; Referenced in Fetch, Resource Timing, Service Workers, XMLHttpRequest; see also WebIDLPedia
USBIsochronousOutTransferPacket.bytesWritten (WebIDL attribute) §: Defined in WebUSB API
USBOutTransferResult.bytesWritten (WebIDL attribute) §: Defined in WebUSB API
WebTransportSendStreamStats.bytesWritten (WebIDL dictionary member) §: Defined in WebTransport