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Index

CSS

  1. #rrggbbaa hex color notation
  2. ::backdrop
  3. ::column
  4. ::details-content
  5. ::file-selector-button
  6. ::first-letter CSS pseudo-element selector
  7. ::placeholder CSS pseudo-element
  8. ::selection CSS pseudo-element
  9. ::spelling-error and ::grammar-error
  10. ::target-text
  11. :autofill
  12. :default CSS pseudo-class
  13. :dir() CSS pseudo-class
  14. :empty
  15. :focus-visible CSS pseudo-class
  16. :focus-within CSS pseudo-class
  17. :has() CSS relational pseudo-class
  18. :has-slotted
  19. :host-context()
  20. :in-range and :out-of-range CSS pseudo-classes
  21. :indeterminate CSS pseudo-class
  22. :is() CSS pseudo-class
  23. :lang()
  24. :modal
  25. :nth-child()
  26. :nth-of-type() pseudo-classes
  27. :open
  28. :optional CSS pseudo-class
  29. :placeholder-shown CSS pseudo-class
  30. :root
  31. :scope (pseudo-class)
  32. :state()
  33. :target
  34. :user-valid and :user-invalid
  35. :where()
  36. <slot>
  37. @charset
  38. @font-face Web fonts
  39. @function
  40. @import
  41. @starting-style
  42. @supports (compatibility prefix)
  43. abs() and sign()
  44. Absolute positioning
  45. accent-color
  46. Active view transition
  47. align-content in block layouts
  48. alignment-baseline
  49. Alt text for generated content
  50. Animatable clipping paths
  51. animation-composition
  52. appearance
  53. aspect-ratio
  54. attr() (content only)
  55. Autonomous custom elements
  56. background-clip
  57. background-clip: border-area
  58. Background-clip: text
  59. background-clip: text
  60. background-color
  61. background-image
  62. background-origin
  63. background-position-x & background-position-y
  64. background-size
  65. baseline-shift
  66. baseline-source
  67. Blending of HTML/SVG elements
  68. Borders
  69. calc() as CSS unit value
  70. calc() keywords
  71. calc-size()
  72. cap unit
  73. caret-shape
  74. Case-insensitive CSS attribute selectors
  75. Case-sensitive attribute selector
  76. ch (character) unit
  77. clip
  78. Clip path boxes
  79. clip-path
  80. Color
  81. color-adjust
  82. color-gamut media query
  83. color-mix()
  84. color-scheme
  85. Column breaks
  86. column-fill
  87. column-span
  88. contain-intrinsic-size
  89. Container scroll-state queries
  90. Content
  91. contrast-color()
  92. corner-shape
  93. counter-set
  94. Crisp edges/pixelated images
  95. crisp-edges
  96. CSS -webkit-user-drag property
  97. CSS 2.1 selectors
  98. CSS ::marker pseudo-element
  99. CSS :any-link selector
  100. CSS :read-only and :read-write selectors
  101. CSS @when / @else conditional rules
  102. CSS all property
  103. CSS Anchor Positioning
  104. CSS Animation
  105. CSS Appearance
  106. CSS Backdrop Filter
  107. CSS background-attachment
  108. CSS background-blend-mode
  109. CSS background-position edge offsets
  110. CSS background-repeat round and space
  111. CSS box-decoration-break
  112. CSS Canvas Drawings
  113. CSS caret-color
  114. CSS Cascade Layers
  115. CSS clip-path property (for HTML)
  116. CSS color() function
  117. CSS Conical Gradients
  118. CSS Container Queries (Size)
  119. CSS Container Query Units
  120. CSS Container Style Queries
  121. CSS Containment
  122. CSS content-visibility
  123. CSS Counter Styles
  124. CSS Counters
  125. CSS Cross-Fade Function
  126. CSS currentColor value
  127. CSS Device Adaptation
  128. CSS display: contents
  129. CSS element() function
  130. CSS Environment Variables env()
  131. CSS Exclusions Level 1
  132. CSS Feature Queries
  133. CSS Filter Effects
  134. CSS filter() function
  135. CSS first-line pseudo-element
  136. CSS Flexible Box Layout Module
  137. CSS Font Loading
  138. CSS font-display
  139. CSS font-feature-settings
  140. CSS font-palette
  141. CSS font-size-adjust
  142. CSS font-smooth
  143. CSS font-stretch
  144. CSS font-variant-alternates
  145. CSS font-variant-numeric
  146. CSS Generated content for pseudo-elements
  147. CSS grab & grabbing cursors
  148. CSS Gradients
  149. CSS Grid Lanes
  150. CSS Grid Layout (level 1)
  151. CSS hanging-punctuation
  152. CSS Hyphenation
  153. CSS if() function
  154. CSS image-set
  155. CSS Initial Letter
  156. CSS initial value
  157. CSS inline-block
  158. CSS justify-content: space-evenly
  159. CSS line-clamp
  160. CSS Logical Properties
  161. CSS Masks
  162. CSS math functions min(), max() and clamp()
  163. CSS min/max-width/height
  164. CSS Motion Path
  165. CSS namespaces
  166. CSS Nesting
  167. CSS outline properties
  168. CSS overflow property
  169. CSS overflow-anchor (Scroll Anchoring)
  170. CSS overflow: overlay
  171. CSS overscroll-behavior
  172. CSS page-break properties
  173. CSS Painting API
  174. CSS pointer-events (for HTML)
  175. CSS position:fixed
  176. CSS position:sticky
  177. CSS print-color-adjust
  178. CSS Reflections
  179. CSS Regions
  180. CSS Relative color syntax
  181. CSS Repeating Gradients
  182. CSS resize property
  183. CSS revert value
  184. CSS Scroll Snap
  185. CSS Scroll-behavior
  186. CSS scrollbar styling
  187. CSS Shapes Level 1
  188. CSS Subgrid
  189. CSS Table display
  190. CSS Text Box
  191. CSS text-indent
  192. CSS text-justify
  193. CSS text-orientation
  194. CSS text-size-adjust
  195. CSS text-stroke and text-fill
  196. CSS text-wrap: balance
  197. CSS touch-action property
  198. CSS unset value
  199. CSS user-select: none
  200. CSS Variables (Custom Properties)
  201. CSS widows & orphans
  202. CSS will-change property
  203. CSS writing-mode property
  204. CSS zoom
  205. CSS3 2D Transforms
  206. CSS3 3D Transforms
  207. CSS3 attr() function for all properties
  208. CSS3 Background-image options
  209. CSS3 Border images
  210. CSS3 Border-radius (rounded corners)
  211. CSS3 Box-shadow
  212. CSS3 Box-sizing
  213. CSS3 Colors
  214. CSS3 Cursors (original values)
  215. CSS3 Cursors: zoom-in & zoom-out
  216. CSS3 font-kerning
  217. CSS3 image-orientation
  218. CSS3 Media Queries
  219. CSS3 Multiple backgrounds
  220. CSS3 Multiple column layout
  221. CSS3 object-fit/object-position
  222. CSS3 Opacity
  223. CSS3 Overflow-wrap
  224. CSS3 selectors
  225. CSS3 tab-size
  226. CSS3 text-align-last
  227. CSS3 Text-overflow
  228. CSS3 Text-shadow
  229. CSS3 Transitions
  230. CSS3 word-break
  231. cubic-bezier() easing
  232. Custom ellipses
  233. Custom highlights
  234. Device media queries
  235. Device posture
  236. display animation
  237. display-mode media query
  238. display: flow-root
  239. display: list-item
  240. display: ruby
  241. display: run-in
  242. DOM overlays for WebXR
  243. dominant-baseline
  244. dynamic-range media query
  245. em unit
  246. ex unit
  247. Explicit descendant combinator >>
  248. field-sizing
  249. fit-content
  250. float and clear
  251. Font metric overrides
  252. Font shorthand
  253. Font unicode-range subsetting
  254. font-family
  255. font-language-override
  256. font-optical-sizing
  257. font-palette animation
  258. font-size
  259. font-style
  260. font-synthesis
  261. font-synthesis-position
  262. font-synthesis-small-caps
  263. font-synthesis-style
  264. font-synthesis-weight
  265. font-variant
  266. font-variant-caps
  267. font-variant-east-asian
  268. font-variant-emoji
  269. font-variant-ligatures
  270. font-variant-position
  271. font-weight
  272. font-width
  273. Forced colors
  274. Fullscreen API
  275. gap property for Flexbox
  276. getComputedStyle
  277. glyph-orientation-vertical
  278. Gradient interpolation
  279. Gradients
  280. Grid animation
  281. High-quality kerning pairs & ligatures
  282. Host
  283. HWB
  284. Hyphenate character
  285. Hyphenate limit chars
  286. ic unit
  287. if()
  288. image-rendering: smooth
  289. ime-mode
  290. Individual transform properties
  291. inherit
  292. Inline-size containment
  293. Input selectors
  294. interactivity
  295. Interest invokers
  296. interpolate-size
  297. Intrinsic & Extrinsic Sizing
  298. inverted-colors media query
  299. isolation
  300. justify-self in block layouts
  301. Layout containment
  302. Layout direction override
  303. LCH and Lab color values
  304. letter-spacing CSS property
  305. lh unit
  306. light-dark()
  307. line-break
  308. line-height
  309. linear() easing
  310. List style
  311. margin
  312. margin-trim
  313. mask-border
  314. mask-type
  315. Math font family
  316. Media element pseudo-classes
  317. Media Queries: interaction media features
  318. Media Queries: Range Syntax
  319. Media Queries: resolution feature
  320. min-content and max-content
  321. Multi-column layout
  322. object-position
  323. object-view-box
  324. Oklab and OkLCh
  325. Opacity (SVG)
  326. outline
  327. Outlines
  328. Overflow media queries
  329. overflow: clip
  330. overlay
  331. padding
  332. Page break aliases
  333. Page breaks
  334. Page selectors
  335. page-orientation
  336. Paint containment
  337. paint-order
  338. Physical properties
  339. Pointer events
  340. Popover
  341. Position
  342. pow(), sqrt(), hypot(), log(), and exp()
  343. prefers-color-scheme media query
  344. prefers-color-scheme media query
  345. prefers-contrast media query
  346. prefers-reduced-motion media query
  347. prefers-reduced-transparency media query
  348. print-color-adjust
  349. progress()
  350. Q unit
  351. Quotes
  352. random()
  353. Range syntax for style queries
  354. rcap unit
  355. rch unit
  356. reading-flow
  357. Rebeccapurple color
  358. rect() and xywh()
  359. Registered custom properties
  360. Relative positioning
  361. rem (root em) units
  362. resolution media query (compatibility prefixes)
  363. Reversed counter-reset
  364. rex unit
  365. RGB
  366. ric unit
  367. rlh unit
  368. round(), mod(), and rem()
  369. ruby-align
  370. ruby-overhang
  371. ruby-position
  372. Scoped attribute
  373. Scoped Styles: the @scope rule
  374. scripting media query
  375. Scroll marker target pseudo-classes
  376. Scroll markers
  377. Scroll-driven animations
  378. scroll-initial-target
  379. scroll-target-group
  380. scrollbar-color
  381. scrollbar-gutter
  382. scrollbar-width
  383. selector list argument of :not()
  384. selector list argument of :nth-child and :nth-last-child CSS pseudo-classes
  385. Shadow parts
  386. shape()
  387. shape-outside
  388. sibling-count() and sibling-index()
  389. sin(), cos(), tan(), asin(), acos(), atan(), and atan2() (CSS)
  390. Size containment
  391. Small, Large, and Dynamic viewport units
  392. speak-as
  393. Static positioning
  394. steps() easing
  395. stretch
  396. Style containment
  397. SVG in CSS backgrounds
  398. System colors
  399. system-ui value for font-family
  400. Tables
  401. text-align
  402. text-combine-upright
  403. text-decoration in ::selection
  404. text-decoration styling
  405. text-decoration-line: blink
  406. text-emphasis styling
  407. text-indent: each-line
  408. text-indent: hanging
  409. text-spacing-trim
  410. text-transform
  411. text-underline-offset
  412. text-underline-position
  413. text-wrap
  414. text-wrap: balance
  415. text-wrap: pretty
  416. Time-relative pseudo-selectors
  417. transform-box
  418. transition-behavior
  419. TTF/OTF - TrueType and OpenType font support
  420. Two-value display property
  421. ui-serif, ui-sans-serif, ui-monospace and ui-rounded values for font-family
  422. Update frequency media query
  423. User action pseudo-classes
  424. Variable fonts
  425. Vertical form controls
  426. vertical-align
  427. video-dynamic-range media query
  428. View Transitions (cross-document)
  429. View Transitions API (single-document)
  430. view-transition-class
  431. Viewport segments
  432. Viewport units: vw, vh, vmin, vmax
  433. visibility
  434. white-space
  435. white-space-collapse
  436. Width and height
  437. Window.devicePixelRatio
  438. word-break: auto-phrase
  439. word-break: break-word
  440. word-spacing
  441. writing-mode SVG 1.1 values
  442. z-index
  443. All CSS features

HTML5

  1. <a>
  2. <abbr>
  3. <address>
  4. <article>
  5. <aside>
  6. <b>
  7. <base>
  8. <bdi>
  9. <bdo>
  10. <blockquote>
  11. <body>
  12. <br>
  13. <button>
  14. <canvas>
  15. <cite>
  16. <code>
  17. <data>
  18. <del>
  19. <dfn>
  20. <dialog closedby>
  21. <div>
  22. <em>
  23. <embed>
  24. <fencedframe>
  25. <fieldset> and <legend>
  26. <figure> and <figcaption>
  27. <form>
  28. <h1> through <h6>
  29. <head>
  30. <header> and <footer>
  31. <hgroup>
  32. <hr>
  33. <html>
  34. <i>
  35. <iframe>
  36. <img sizes="auto" loading="lazy">
  37. <img>
  38. <input type="button">
  39. <input type="checkbox">
  40. <input type="file">
  41. <input type="hidden">
  42. <input type="image">
  43. <input type="password">
  44. <input type="radio">
  45. <input type="reset">
  46. <input type="submit">
  47. <input>
  48. <ins>
  49. <kbd>
  50. <label>
  51. <link rel="expect">
  52. <link rel="preconnect">
  53. <link>
  54. <main>
  55. <mark>
  56. <menu>
  57. <meta name="application-title">
  58. <meta>
  59. <nav>
  60. <object>
  61. <ol>, <ul>, and <li>
  62. <output>
  63. <p>
  64. <pre>
  65. <q>
  66. <s>
  67. <samp>
  68. <script> and <noscript>
  69. <search>
  70. <section>
  71. <select>
  72. <small>
  73. <source>
  74. <span>
  75. <strong>
  76. <style>
  77. <sub> and <sup>
  78. <textarea>
  79. <time>
  80. <title>
  81. <u>
  82. <var>
  83. `alpha` and `colorspace` attributes for `<input type=color>`
  84. Accelerometer
  85. accept attribute for file input
  86. accesskey
  87. Alternative style sheets
  88. async attribute for external scripts
  89. Attributes for form submission
  90. Attribution reporting
  91. Audio element
  92. Audio Tracks
  93. autocapitalize
  94. autocorrect
  95. Autofocus attribute
  96. blocking="render"
  97. Canvas (basic support)
  98. Canvas blend modes
  99. classList (DOMTokenList)
  100. Color input type
  101. contenteditable attribute (basic support)
  102. contenteditable="plaintext-only"
  103. Context menu item (menuitem element)
  104. controlslist
  105. CPU compute pressure
  106. Credentialless iframes
  107. Custom Elements (deprecated V0 spec)
  108. Custom Elements (V1)
  109. Custom protocol handling
  110. Customizable Select element
  111. Customized built-in elements
  112. Datalist element
  113. dataset & data-* attributes
  114. Date and time input types
  115. defer attribute for external scripts
  116. Description list
  117. Details & Summary elements
  118. Dialog element
  119. dirname
  120. disabled attribute of the fieldset element
  121. Download attribute
  122. Drag and Drop
  123. Email, telephone & URL input types
  124. enterkeyhint
  125. Fetch priority
  126. Form attribute
  127. Form validation
  128. getElementsByClassName
  129. Gyroscope
  130. Hashchange event
  131. hidden attribute
  132. hidden="until-found"
  133. HTML Imports
  134. HTML Media Capture
  135. HTML templates
  136. HTML5 semantic elements
  137. Idle detection
  138. Image maps
  139. indeterminate checkbox
  140. inert
  141. Inline SVG in HTML5
  142. input event
  143. input placeholder attribute
  144. inputmode attribute
  145. Invoker commands
  146. lang
  147. Lazy loading via attribute for images & iframes
  148. Lazy loading via attribute for video & audio
  149. Link type "noreferrer"
  150. Local fonts
  151. maxlength attribute for input and textarea elements
  152. meter element
  153. Minimum length attribute for input fields
  154. Multiple file selection
  155. Mutually exclusive <details> elements
  156. naturalWidth & naturalHeight image properties
  157. navigator.share()
  158. Number input type
  159. Offline web applications
  160. OffscreenCanvas
  161. PageTransitionEvent
  162. Path2D
  163. Pattern attribute for input fields
  164. Payment request
  165. Picture element
  166. Ping attribute
  167. PNG favicons
  168. popover="hint"
  169. Portals
  170. Preloading responsive images
  171. Presentation API
  172. Printing Events
  173. Private click measurement
  174. progress element
  175. Range input type
  176. readonly attribute of input and textarea elements
  177. rel=noopener
  178. relList (DOMTokenList)
  179. Remote playback
  180. Reversed attribute of ordered lists
  181. Ruby annotation
  182. sandbox attribute for iframes
  183. Screen capture
  184. seamless attribute for iframes
  185. Search input type
  186. Selection controls for input & textarea
  187. Session history management
  188. Speculation rules
  189. spellcheck
  190. Spellcheck attribute
  191. srcdoc attribute for iframes
  192. Srcset and sizes attributes
  193. Storage access
  194. style (attribute)
  195. Subresource Integrity
  196. SVG favicons
  197. tabindex global attribute
  198. Text API for Canvas
  199. Text tracks
  200. title (attribute)
  201. Topics
  202. translate
  203. Video element
  204. Video Tracks
  205. Virtual keyboard
  206. wbr (word break opportunity) element
  207. Web serial
  208. WebGL - 3D Canvas graphics
  209. WebGL 2.0
  210. WebOTP
  211. WebXR
  212. Window management
  213. writingsuggestions
  214. All HTML5 features

Other

  1. "once" event listener option
  2. AAC audio file format
  3. Anchor position container queries
  4. Animated PNG (APNG)
  5. Application shortcuts
  6. AudioListener setPosition() and setOrientation()
  7. autocomplete attribute: on & off values
  8. AV1 video format
  9. AVIF image format
  10. Branch hinting (WebAssembly)
  11. Brotli Accept-Encoding/Content-Encoding
  12. Built-in PDF viewer
  13. ChildNode.remove()
  14. Clearing site data
  15. Client Hints: DPR, Width, Viewport-Width
  16. COLR/CPAL(v0) Font Formats
  17. COLR/CPAL(v1) Font Formats
  18. Compression Dictionary Transport
  19. Cookies
  20. CSS Paged Media (@page)
  21. Data URIs
  22. Data URLs
  23. Declarative Shadow DOM
  24. Device memory
  25. Document Policy
  26. document.elementFromPoint()
  27. document.head
  28. document.scrollingElement
  29. DOM manipulation convenience methods
  30. DOMContentLoaded
  31. DOMMatrix
  32. Dynamic Adaptive Streaming over HTTP (MPEG-DASH)
  33. Early data
  34. Element.closest()
  35. Element.insertAdjacentElement() & Element.insertAdjacentText()
  36. EOT - Embedded OpenType fonts
  37. EventTarget.addEventListener()
  38. EventTarget.dispatchEvent
  39. Exception handling (WebAssembly)
  40. Exception references with exnref (WebAssembly)
  41. Extended constant expressions (WebAssembly)
  42. Fetch metadata request headers
  43. fetchLater
  44. File handlers
  45. FLAC audio format
  46. focusin & focusout events
  47. Garbage collection (WebAssembly)
  48. Global privacy control
  49. HEIF/HEIC image format
  50. HEVC/H.265 video format
  51. HTMLElement.innerText
  52. HTTP authentication
  53. HTTP Live Streaming (HLS)
  54. HTTP Strict Transport Security
  55. HTTP/1.1
  56. HTTP/2 protocol
  57. HTTP/3 protocol
  58. JavaScript promise integration (WebAssembly)
  59. JPEG 2000 image format
  60. JPEG XL image format
  61. JPEG XR image format
  62. KeyboardEvent.charCode
  63. KeyboardEvent.code
  64. KeyboardEvent.getModifierState()
  65. KeyboardEvent.key
  66. KeyboardEvent.location
  67. KeyboardEvent.which
  68. Launch handler
  69. MathML
  70. Media Fragments
  71. Memory64 (WebAssembly)
  72. Mixed content handling
  73. MP3 audio format
  74. MPEG-4/H.264 video format
  75. Multi-memory (WebAssembly)
  76. Mutation events
  77. Network Information
  78. Node.compareDocumentPosition()
  79. Node.textContent
  80. Ogg Vorbis audio format
  81. Ogg/Theora video format
  82. Opus audio format
  83. Partitioned cookies
  84. Passive event listeners
  85. PNG alpha transparency
  86. Protocol handlers
  87. querySelector/querySelectorAll
  88. Related apps
  89. Relaxed-width SIMD (WebAssembly)
  90. Reporting API
  91. Resource Hints: dns-prefetch
  92. Resource Hints: Lazyload
  93. Resource Hints: modulepreload
  94. Resource Hints: preconnect
  95. Resource Hints: prefetch
  96. Resource Hints: preload
  97. Resource Hints: prerender
  98. Save-Data
  99. Scoped custom element registries
  100. SDCH Accept-Encoding/Content-Encoding
  101. Shadow DOM (deprecated V0 spec)
  102. Shadow DOM (V1)
  103. Share targets
  104. Signed HTTP Exchanges (SXG)
  105. Sourcemap header
  106. SPDY protocol
  107. String builtins (WebAssembly)
  108. Summarizer
  109. Tail call optimization (WebAssembly)
  110. theme-color Meta Tag
  111. Typed function references (WebAssembly)
  112. Upgrade insecure requests
  113. URL Scroll-To-Text Fragment
  114. User agent client hints
  115. WAI-ARIA Accessibility features
  116. Wav audio format
  117. Web app manifest
  118. WebAssembly
  119. WebAssembly BigInt to i64 conversion in JS API
  120. WebAssembly Bulk Memory Operations
  121. WebAssembly Import/Export of Mutable Globals
  122. WebAssembly Multi-Value
  123. WebAssembly Non-trapping float-to-int Conversion
  124. WebAssembly Reference Types
  125. WebAssembly Sign Extension Operators
  126. WebAssembly SIMD
  127. WebAssembly Threads and Atomics
  128. WebDriver BiDi
  129. WEBGL_compressed_texture_s3tc_srgb WebGL extension
  130. WebM video format
  131. WebP image format
  132. WebVTT - Web Video Text Tracks
  133. Window Controls Overlay
  134. WOFF - Web Open Font Format
  135. WOFF 2.0 - Web Open Font Format
  136. XHTML served as application/xhtml+xml
  137. XHTML+SMIL animation
  138. zstd (Zstandard) content-encoding
  139. All Other features

JS API

  1. 2D canvas
  2. 2D canvas opacity
  3. Abortable fetch
  4. AbortController & AbortSignal
  5. AbortSignal.any()
  6. AbortSignal.timeout()
  7. Accelerometer
  8. Alerts
  9. Ambient Light Sensor
  10. Anchors (WebXR)
  11. ANGLE_instanced_arrays WebGL extension
  12. ARIA attribute reflection
  13. Asynchronous Clipboard API
  14. Asynchronously iterable streams
  15. Audio session
  16. AudioListener
  17. AudioWorklet
  18. Augmented reality
  19. Auxclick
  20. Back/forward cache blocking reasons
  21. Background fetch
  22. Background sync
  23. Background Sync API
  24. Badging
  25. Barcode detector
  26. BarProp
  27. Base64 encoding and decoding
  28. Basic console logging functions
  29. Battery Status API
  30. Beacon API
  31. beforeinstallprompt
  32. beforeunload
  33. Blob constructing
  34. Blob URLs
  35. BroadcastChannel
  36. Canvas createConicGradient()
  37. Canvas reset()
  38. Canvas roundRect()
  39. Capture Handle
  40. captureStream() for <audio> and <video>
  41. captureStream() for <canvas>
  42. Change event
  43. Channel messaging
  44. checkVisibility()
  45. Clipboard events
  46. clipboardchange
  47. ClipboardItem.supports()
  48. CloseWatcher
  49. Color management for 2D canvas
  50. Color management for WebGL
  51. Color management for WebGL2
  52. Composition events
  53. Compression streams
  54. console.time and console.timeEnd
  55. Constraint Validation API
  56. Constructed stylesheets
  57. Contact picker
  58. Content Index
  59. contextlost and contextrestored
  60. Cookie Store API
  61. cookieEnabled
  62. createImageBitmap
  63. Credential management
  64. Credential Management API
  65. Cross-document messaging
  66. Cross-Origin Resource Sharing
  67. crypto.getRandomValues()
  68. CSS object model
  69. CSS object model (DOM level 2)
  70. CSS typed object model
  71. CSS.escape()
  72. CSS.supports() API
  73. Custom formats for clipboard items
  74. Custom highlights from point
  75. CustomEvent
  76. Depth sensing
  77. Desynchronized 2D canvas
  78. Desynchronized WebGL canvas
  79. Desynchronized WebGL2 canvas
  80. DeviceOrientation & DeviceMotion events
  81. dialog.requestClose()
  82. Digital credentials
  83. Digital goods
  84. Directory selection from file input
  85. Do Not Track API
  86. Document colors
  87. Document Object Model Range
  88. Document picture-in-picture
  89. document.caretPositionFromPoint()
  90. document.currentScript
  91. document.evaluate & XPath
  92. Document.execCommand()
  93. document.write()
  94. DOM
  95. DOM Geometry
  96. DOM Parsing and Serialization
  97. DOMParser
  98. EditContext
  99. Efficient Script Yielding: setImmediate()
  100. Element capture
  101. Element timing
  102. Element.getBoundingClientRect()
  103. Element.insertAdjacentHTML()
  104. Element.scrollIntoViewIfNeeded()
  105. Encrypted Media Extensions
  106. Event timing
  107. execCommand()
  108. EXT_blend_minmax WebGL extension
  109. EXT_color_buffer_float WebGL extension
  110. EXT_color_buffer_half_float WebGL extension
  111. EXT_float_blend WebGL extension
  112. EXT_frag_depth WebGL extension
  113. EXT_shader_texture_lod WebGL extension
  114. EXT_sRGB WebGL extension
  115. EXT_texture_compression_bptc WebGL extension
  116. EXT_texture_compression_rgtc WebGL extension
  117. EXT_texture_filter_anisotropic WebGL extension
  118. EXT_texture_norm16 WebGL extension
  119. Eyedropper
  120. fastSeek()
  121. Feature Policy
  122. Federated credential management
  123. Federated credentials
  124. Fetch
  125. Fetch upload streams
  126. FIDO U2F API
  127. File API
  128. File System Access API
  129. FileReader API
  130. FileReaderSync
  131. Filesystem & FileWriter API
  132. Focus events
  133. Form-associated custom elements
  134. Gamepad (WebXR)
  135. Gamepad API
  136. Gamepad haptic feedback
  137. Gamepad touch buttons
  138. Gamepad VR hands and poses
  139. Geolocation
  140. getHTML()
  141. getUserMedia/Stream API
  142. Gyroscope
  143. Hand input
  144. High Resolution Time API
  145. Hit test
  146. ImageBitmapRenderingContext
  147. ImageCapture API
  148. Imperative slot assignment
  149. IndexedDB
  150. IndexedDB 2.0
  151. IndexedDB getAllRecords()
  152. Ink
  153. Input Method Editor API
  154. Insertable streams for MediaStreamTrack
  155. IntersectionObserver
  156. IntersectionObserver V2
  157. isInputPending()
  158. isSecureContext
  159. JavaScript modules in shared workers
  160. Keyboard events
  161. Keyboard lock
  162. Keyboard map
  163. KHR_parallel_shader_compile WebGL extension
  164. Language
  165. Language detector
  166. Largest contentful paint (LCP)
  167. Layout instability
  168. Lighting estimation
  169. Location
  170. Locks
  171. Long animation frames
  172. Long tasks
  173. Magnetometer
  174. Managed media source
  175. matches() DOM method
  176. matchMedia
  177. Media capabilities
  178. Media Capture from DOM Elements API
  179. Media playback quality
  180. Media session
  181. Media Source Extensions
  182. MediaController
  183. MediaRecorder API
  184. MediaStream recording
  185. Memory measurement
  186. messageerror
  187. Mouse events
  188. moveBefore()
  189. Mutation Observer
  190. MutationObserver
  191. Navigation API
  192. Navigation precommit handlers
  193. Navigation timing
  194. Navigation Timing API
  195. Navigator
  196. navigator.hardwareConcurrency
  197. Network Information API
  198. Non-cookie storage access
  199. Notifications
  200. Numeric factory functions
  201. Object RTC (ORTC) API for WebRTC
  202. Observable
  203. OES_draw_buffers_indexed WebGL extension
  204. OES_element_index_uint WebGL extension
  205. OES_fbo_render_mipmap WebGL extension
  206. OES_standard_derivatives WebGL extension
  207. OES_texture_float WebGL extension
  208. OES_texture_float_linear WebGL extension
  209. OES_texture_half_float WebGL extension
  210. OES_texture_half_float_linear WebGL extension
  211. OES_vertex_array_object WebGL extension
  212. OfflineAudioContext
  213. Online/offline status
  214. Orientation Sensor
  215. Orientation Sensor
  216. Origin
  217. Origin private file system
  218. OVR_multiview2 WebGL extension
  219. Page lifecycle
  220. Page Visibility
  221. Page visibility state
  222. Paint timing
  223. Passkeys
  224. Password credentials
  225. Payment handler
  226. Payment Request API
  227. pdfViewerEnabled
  228. PerformanceTiming and PerformanceNavigation
  229. Periodic background sync
  230. Permissions API
  231. Permissions Policy
  232. Picture-in-Picture
  233. Pointer Lock API
  234. preservesPitch
  235. Profiler
  236. Proximity API
  237. Push API
  238. queueMicrotask()
  239. Raw camera access for WebXR
  240. Read unsanitized clipboard data
  241. ReadableStream.from()
  242. Region capture
  243. registerProtocolHandler
  244. Related website sets
  245. requestAnimationFrame
  246. requestAnimationFrame() in workers
  247. requestIdleCallback
  248. requestVideoFrameCallback()
  249. Resize Observer
  250. Resource size
  251. Resource Timing (basic support)
  252. Sanitizer API
  253. Scheduler API
  254. Screen
  255. Screen Orientation
  256. Screen orientation lock
  257. Screen Wake Lock API
  258. Scroll methods on elements (scroll, scrollTo, scrollBy)
  259. Scroll snap events
  260. scrollend
  261. scrollIntoView
  262. scrollIntoView() container
  263. Secure payment confirmation
  264. Selection API
  265. Selection composed ranges
  266. Server Timing
  267. Server-sent events
  268. Service Workers
  269. setInterval
  270. setTimeout()
  271. Shared storage
  272. Shared storage locks
  273. Shared Web Workers
  274. SharedArrayBuffer in WebGL
  275. showPicker() for <input>
  276. showPicker() for <select>
  277. Speech Recognition API
  278. Speech Synthesis API
  279. Storage buckets
  280. Storage manager
  281. Streams
  282. Streams
  283. structuredClone()
  284. SVG clipboard items
  285. Synchronous Clipboard API
  286. TextEncoder & TextDecoder
  287. ToggleEvent source
  288. Touch events
  289. Transferable streams
  290. Translator
  291. Trusted Types for DOM manipulation
  292. Unsanitized HTML parsing methods
  293. URL API
  294. URL.canParse()
  295. URLPattern
  296. URLSearchParams
  297. User activation
  298. User agent sniffing
  299. User Timing API
  300. Vibration
  301. Vibration API
  302. Visual viewport API
  303. Web Animations API
  304. Web Audio API
  305. Web authentication easy public key access
  306. Web authentication signal methods
  307. Web Bluetooth
  308. Web Cryptography
  309. Web MIDI API
  310. Web NFC
  311. Web Notifications
  312. Web Serial API
  313. Web Share API
  314. Web Sockets
  315. Web SQL Database
  316. Web Storage - name/value pairs
  317. Web Workers
  318. WebCodecs API
  319. WEBGL_color_buffer_float WebGL extension
  320. WEBGL_compressed_texture_astc WebGL extension
  321. WEBGL_compressed_texture_etc WebGL extension
  322. WEBGL_compressed_texture_etc1 WebGL extension
  323. WEBGL_compressed_texture_pvrtc WebGL extension
  324. WEBGL_compressed_texture_s3tc WebGL extension
  325. WEBGL_debug_renderer_info WebGL extension
  326. WEBGL_debug_shaders WebGL extension
  327. WEBGL_depth_texture WebGL extension
  328. WEBGL_draw_buffers WebGL extension
  329. WEBGL_lose_context WebGL extension
  330. WEBGL_multi_draw WebGL extension
  331. WebGPU
  332. WebHID API
  333. WebRTC encoded transform
  334. WebRTC Peer-to-peer connections
  335. WebRTC SCTP information
  336. WebRTC statistics
  337. WebTransport
  338. WebUSB
  339. WebVR API
  340. WebVTT cue alignment
  341. WebVTT cue settings
  342. WebVTT regions
  343. WebXR Device API
  344. Wheel events
  345. willReadFrequently
  346. Window
  347. window.external
  348. window.print()
  349. XMLHttpRequest
  350. XMLHttpRequest advanced features
  351. XMLSerializer
  352. XSLT
  353. All JS API features
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