Can I use
?

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. border-shape
  69. Borders
  70. calc() as CSS unit value
  71. calc() keywords
  72. calc-size()
  73. cap unit
  74. caret-shape
  75. Case-insensitive CSS attribute selectors
  76. Case-sensitive attribute selector
  77. ch (character) unit
  78. clip
  79. Clip path boxes
  80. clip-path
  81. Color
  82. color-adjust
  83. color-gamut media query
  84. color-mix()
  85. color-scheme
  86. Column breaks
  87. column-fill
  88. column-span
  89. contain-intrinsic-size
  90. Container scroll-state queries
  91. Content
  92. contrast-color()
  93. corner-shape
  94. counter-set
  95. Crisp edges/pixelated images
  96. crisp-edges
  97. cross-origin() for url()
  98. CSS -webkit-user-drag property
  99. CSS 2.1 selectors
  100. CSS ::marker pseudo-element
  101. CSS :any-link selector
  102. CSS :read-only and :read-write selectors
  103. CSS @when / @else conditional rules
  104. CSS all property
  105. CSS Anchor Positioning
  106. CSS Animation
  107. CSS Appearance
  108. CSS Backdrop Filter
  109. CSS background-attachment
  110. CSS background-blend-mode
  111. CSS background-position edge offsets
  112. CSS background-repeat round and space
  113. CSS box-decoration-break
  114. CSS Canvas Drawings
  115. CSS caret-color
  116. CSS Cascade Layers
  117. CSS clip-path property (for HTML)
  118. CSS color() function
  119. CSS Conical Gradients
  120. CSS Container Queries (Size)
  121. CSS Container Query Units
  122. CSS Container Style Queries
  123. CSS Containment
  124. CSS content-visibility
  125. CSS Counter Styles
  126. CSS Counters
  127. CSS Cross-Fade Function
  128. CSS currentColor value
  129. CSS Device Adaptation
  130. CSS display: contents
  131. CSS element() function
  132. CSS Environment Variables env()
  133. CSS Exclusions Level 1
  134. CSS Feature Queries
  135. CSS Filter Effects
  136. CSS filter() function
  137. CSS first-line pseudo-element
  138. CSS Flexible Box Layout Module
  139. CSS Font Loading
  140. CSS font-display
  141. CSS font-feature-settings
  142. CSS font-palette
  143. CSS font-size-adjust
  144. CSS font-smooth
  145. CSS font-stretch
  146. CSS font-variant-alternates
  147. CSS font-variant-numeric
  148. CSS Generated content for pseudo-elements
  149. CSS grab & grabbing cursors
  150. CSS Gradients
  151. CSS Grid Lanes
  152. CSS Grid Layout (level 1)
  153. CSS hanging-punctuation
  154. CSS Hyphenation
  155. CSS if() function
  156. CSS image-set
  157. CSS Initial Letter
  158. CSS initial value
  159. CSS inline-block
  160. CSS justify-content: space-evenly
  161. CSS line-clamp
  162. CSS Logical Properties
  163. CSS Masks
  164. CSS math functions min(), max() and clamp()
  165. CSS min/max-width/height
  166. CSS Motion Path
  167. CSS namespaces
  168. CSS Nesting
  169. CSS outline properties
  170. CSS overflow property
  171. CSS overflow-anchor (Scroll Anchoring)
  172. CSS overflow: overlay
  173. CSS overscroll-behavior
  174. CSS page-break properties
  175. CSS Painting API
  176. CSS pointer-events (for HTML)
  177. CSS position:fixed
  178. CSS position:sticky
  179. CSS print-color-adjust
  180. CSS Reflections
  181. CSS Regions
  182. CSS Relative color syntax
  183. CSS Repeating Gradients
  184. CSS resize property
  185. CSS revert value
  186. CSS Scroll Snap
  187. CSS Scroll-behavior
  188. CSS scrollbar styling
  189. CSS Shapes Level 1
  190. CSS Subgrid
  191. CSS Table display
  192. CSS Text Box
  193. CSS text-indent
  194. CSS text-justify
  195. CSS text-orientation
  196. CSS text-size-adjust
  197. CSS text-stroke and text-fill
  198. CSS text-wrap: balance
  199. CSS touch-action property
  200. CSS unset value
  201. CSS user-select: none
  202. CSS Variables (Custom Properties)
  203. CSS widows & orphans
  204. CSS will-change property
  205. CSS writing-mode property
  206. CSS zoom
  207. CSS3 2D Transforms
  208. CSS3 3D Transforms
  209. CSS3 attr() function for all properties
  210. CSS3 Background-image options
  211. CSS3 Border images
  212. CSS3 Border-radius (rounded corners)
  213. CSS3 Box-shadow
  214. CSS3 Box-sizing
  215. CSS3 Colors
  216. CSS3 Cursors (original values)
  217. CSS3 Cursors: zoom-in & zoom-out
  218. CSS3 font-kerning
  219. CSS3 image-orientation
  220. CSS3 Media Queries
  221. CSS3 Multiple backgrounds
  222. CSS3 Multiple column layout
  223. CSS3 object-fit/object-position
  224. CSS3 Opacity
  225. CSS3 Overflow-wrap
  226. CSS3 selectors
  227. CSS3 tab-size
  228. CSS3 text-align-last
  229. CSS3 Text-overflow
  230. CSS3 Text-shadow
  231. CSS3 Transitions
  232. CSS3 word-break
  233. cubic-bezier() easing
  234. Custom ellipses
  235. Custom highlights
  236. Device media queries
  237. Device posture
  238. display animation
  239. display-mode media query
  240. display: flow-root
  241. display: list-item
  242. display: ruby
  243. display: run-in
  244. DOM overlays for WebXR
  245. dominant-baseline
  246. dynamic-range media query
  247. dynamic-range-limit
  248. em unit
  249. ex unit
  250. Explicit descendant combinator >>
  251. field-sizing
  252. fit-content
  253. float and clear
  254. Font metric overrides
  255. Font shorthand
  256. Font unicode-range subsetting
  257. font-family
  258. font-language-override
  259. font-optical-sizing
  260. font-palette animation
  261. font-size
  262. font-style
  263. font-synthesis
  264. font-synthesis-position
  265. font-synthesis-small-caps
  266. font-synthesis-style
  267. font-synthesis-weight
  268. font-variant
  269. font-variant-caps
  270. font-variant-east-asian
  271. font-variant-emoji
  272. font-variant-ligatures
  273. font-variant-position
  274. font-weight
  275. font-width
  276. Forced colors
  277. Fullscreen API
  278. gap property for Flexbox
  279. getComputedStyle
  280. glyph-orientation-vertical
  281. Gradient interpolation
  282. Gradients
  283. Grid animation
  284. High-quality kerning pairs & ligatures
  285. Host
  286. HWB
  287. Hyphenate character
  288. Hyphenate limit chars
  289. ic unit
  290. if()
  291. image-rendering: smooth
  292. ime-mode
  293. Individual transform properties
  294. inherit
  295. Inline-size containment
  296. Input selectors
  297. interactivity
  298. Interest invokers
  299. interpolate-size
  300. Intrinsic & Extrinsic Sizing
  301. inverted-colors media query
  302. isolation
  303. justify-self in block layouts
  304. Layout containment
  305. Layout direction override
  306. LCH and Lab color values
  307. letter-spacing CSS property
  308. lh unit
  309. light-dark()
  310. light-dark() image values
  311. line-break
  312. line-height
  313. linear() easing
  314. List style
  315. margin
  316. margin-trim
  317. mask-border
  318. mask-type
  319. Math font family
  320. Media element pseudo-classes
  321. Media Queries: interaction media features
  322. Media Queries: Range Syntax
  323. Media Queries: resolution feature
  324. min-content and max-content
  325. Multi-column layout
  326. object-position
  327. object-view-box
  328. Oklab and OkLCh
  329. Opacity (SVG)
  330. outline
  331. Outlines
  332. Overflow media queries
  333. overflow-clip-margin
  334. overflow: clip
  335. overlay
  336. padding
  337. Page break aliases
  338. Page breaks
  339. Page selectors
  340. page-orientation
  341. Paint containment
  342. paint-order
  343. Physical properties
  344. Pointer events
  345. Popover
  346. Position
  347. pow(), sqrt(), hypot(), log(), and exp()
  348. prefers-color-scheme media query
  349. prefers-color-scheme media query
  350. prefers-contrast media query
  351. prefers-reduced-motion media query
  352. prefers-reduced-transparency media query
  353. print-color-adjust
  354. progress()
  355. Q unit
  356. Quotes
  357. random()
  358. Range syntax for style queries
  359. rcap unit
  360. rch unit
  361. reading-flow
  362. Rebeccapurple color
  363. rect() and xywh()
  364. referrer-policy() for url()
  365. Registered custom properties
  366. Relative positioning
  367. rem (root em) units
  368. resolution media query (compatibility prefixes)
  369. Reversed counter-reset
  370. rex unit
  371. RGB
  372. ric unit
  373. rlh unit
  374. round(), mod(), and rem()
  375. ruby-align
  376. ruby-overhang
  377. ruby-position
  378. Scoped attribute
  379. Scoped Styles: the @scope rule
  380. scripting media query
  381. Scroll marker target pseudo-classes
  382. Scroll markers
  383. Scroll-driven animations
  384. scroll-initial-target
  385. scroll-target-group
  386. scrollbar-color
  387. scrollbar-gutter
  388. scrollbar-width
  389. selector list argument of :not()
  390. selector list argument of :nth-child and :nth-last-child CSS pseudo-classes
  391. Shadow parts
  392. shape()
  393. shape-outside
  394. sibling-count() and sibling-index()
  395. sin(), cos(), tan(), asin(), acos(), atan(), and atan2() (CSS)
  396. Size containment
  397. Small, Large, and Dynamic viewport units
  398. speak-as
  399. Static positioning
  400. steps() easing
  401. stretch
  402. Style containment
  403. SVG in CSS backgrounds
  404. System colors
  405. system-ui value for font-family
  406. Tables
  407. text-align
  408. text-combine-upright
  409. text-decoration in ::selection
  410. text-decoration styling
  411. text-decoration-line: blink
  412. text-decoration-skip-ink
  413. text-decoration-skip-ink: all
  414. text-emphasis styling
  415. text-indent: each-line
  416. text-indent: hanging
  417. text-spacing-trim
  418. text-transform
  419. text-underline-offset
  420. text-underline-position
  421. text-wrap
  422. text-wrap: balance
  423. text-wrap: pretty
  424. Time-relative pseudo-selectors
  425. transform-box
  426. transition-behavior
  427. TTF/OTF - TrueType and OpenType font support
  428. Two-value display property
  429. ui-serif, ui-sans-serif, ui-monospace and ui-rounded values for font-family
  430. Update frequency media query
  431. User action pseudo-classes
  432. Variable fonts
  433. Vertical form controls
  434. vertical-align
  435. video-dynamic-range media query
  436. View Transitions (cross-document)
  437. View Transitions API (single-document)
  438. view-transition-class
  439. Viewport segments
  440. Viewport units: vw, vh, vmin, vmax
  441. visibility
  442. white-space
  443. white-space-collapse
  444. Width and height
  445. Window.devicePixelRatio
  446. word-break: auto-phrase
  447. word-break: break-word
  448. word-spacing
  449. writing-mode SVG 1.1 values
  450. z-index
  451. 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. <geolocation>
  29. <h1> through <h6>
  30. <head>
  31. <header> and <footer>
  32. <hgroup>
  33. <hr>
  34. <html>
  35. <i>
  36. <iframe>
  37. <img sizes="auto" loading="lazy">
  38. <img>
  39. <input type="button">
  40. <input type="checkbox">
  41. <input type="file">
  42. <input type="hidden">
  43. <input type="image">
  44. <input type="password">
  45. <input type="radio">
  46. <input type="reset">
  47. <input type="submit">
  48. <input>
  49. <ins>
  50. <kbd>
  51. <label>
  52. <link rel="expect">
  53. <link rel="preconnect">
  54. <link>
  55. <main>
  56. <mark>
  57. <menu>
  58. <meta name="application-title">
  59. <meta name="text-scale">
  60. <meta>
  61. <nav>
  62. <object>
  63. <ol>, <ul>, and <li>
  64. <output>
  65. <p>
  66. <pre>
  67. <q>
  68. <s>
  69. <samp>
  70. <script> and <noscript>
  71. <search>
  72. <section>
  73. <select>
  74. <small>
  75. <source>
  76. <span>
  77. <strong>
  78. <style>
  79. <sub> and <sup>
  80. <textarea>
  81. <time>
  82. <title>
  83. <u>
  84. <var>
  85. `alpha` and `colorspace` attributes for `<input type=color>`
  86. Accelerometer
  87. accept attribute for file input
  88. accesskey
  89. Alternative style sheets
  90. async attribute for external scripts
  91. Attributes for form submission
  92. Attribution reporting
  93. Audio element
  94. Audio Tracks
  95. autocapitalize
  96. autocorrect
  97. Autofocus attribute
  98. blocking="render"
  99. Canvas (basic support)
  100. Canvas blend modes
  101. classList (DOMTokenList)
  102. Color input type
  103. contenteditable attribute (basic support)
  104. contenteditable="plaintext-only"
  105. Context menu item (menuitem element)
  106. controlslist
  107. CPU compute pressure
  108. Credentialless iframes
  109. Custom Elements (deprecated V0 spec)
  110. Custom Elements (V1)
  111. Custom protocol handling
  112. Customizable Select element
  113. Customized built-in elements
  114. Datalist element
  115. dataset & data-* attributes
  116. Date and time input types
  117. defer attribute for external scripts
  118. Description list
  119. Details & Summary elements
  120. Dialog element
  121. dirname
  122. disabled attribute of the fieldset element
  123. Download attribute
  124. Drag and Drop
  125. Email, telephone & URL input types
  126. enterkeyhint
  127. Fetch priority
  128. Form attribute
  129. Form validation
  130. getElementsByClassName
  131. Gyroscope
  132. Hashchange event
  133. hidden attribute
  134. hidden="until-found"
  135. HTML Imports
  136. HTML Media Capture
  137. HTML templates
  138. HTML5 semantic elements
  139. Idle detection
  140. Image maps
  141. indeterminate checkbox
  142. inert
  143. Inline SVG in HTML5
  144. input event
  145. input placeholder attribute
  146. inputmode attribute
  147. Invoker commands
  148. lang
  149. Lazy loading via attribute for images & iframes
  150. Lazy loading via attribute for video & audio
  151. Link type "noreferrer"
  152. Local fonts
  153. maxlength attribute for input and textarea elements
  154. meter element
  155. Minimum length attribute for input fields
  156. Multiple file selection
  157. Mutually exclusive <details> elements
  158. naturalWidth & naturalHeight image properties
  159. navigator.share()
  160. Number input type
  161. Offline web applications
  162. OffscreenCanvas
  163. PageTransitionEvent
  164. Path2D
  165. Pattern attribute for input fields
  166. Payment request
  167. Picture element
  168. Ping attribute
  169. PNG favicons
  170. popover="hint"
  171. Portals
  172. Preloading responsive images
  173. Presentation API
  174. Printing Events
  175. Private click measurement
  176. progress element
  177. Range input type
  178. readonly attribute of input and textarea elements
  179. rel=noopener
  180. relList (DOMTokenList)
  181. Remote playback
  182. Reversed attribute of ordered lists
  183. Ruby annotation
  184. sandbox attribute for iframes
  185. Screen capture
  186. seamless attribute for iframes
  187. Search input type
  188. Selection controls for input & textarea
  189. Session history management
  190. Speculation rules
  191. spellcheck
  192. Spellcheck attribute
  193. srcdoc attribute for iframes
  194. Srcset and sizes attributes
  195. Storage access
  196. style (attribute)
  197. Subresource Integrity
  198. SVG favicons
  199. tabindex global attribute
  200. Text API for Canvas
  201. Text tracks
  202. title (attribute)
  203. Topics
  204. translate
  205. Video element
  206. Video Tracks
  207. Virtual keyboard
  208. wbr (word break opportunity) element
  209. Web serial
  210. WebGL - 3D Canvas graphics
  211. WebGL 2.0
  212. WebOTP
  213. WebXR
  214. Window management
  215. writingsuggestions
  216. 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. BMP
  11. Branch hinting (WebAssembly)
  12. Brotli Accept-Encoding/Content-Encoding
  13. Built-in PDF viewer
  14. ChildNode.remove()
  15. Clearing site data
  16. Client Hints: DPR, Width, Viewport-Width
  17. COLR/CPAL(v0) Font Formats
  18. COLR/CPAL(v1) Font Formats
  19. Compression Dictionary Transport
  20. Cookies
  21. CSS Paged Media (@page)
  22. Data URIs
  23. Data URLs
  24. Declarative Shadow DOM
  25. Device memory
  26. Document Policy
  27. document.elementFromPoint()
  28. document.head
  29. document.scrollingElement
  30. DOM manipulation convenience methods
  31. DOMContentLoaded
  32. DOMMatrix
  33. Dynamic Adaptive Streaming over HTTP (MPEG-DASH)
  34. Early data
  35. Element.closest()
  36. Element.insertAdjacentElement() & Element.insertAdjacentText()
  37. EOT - Embedded OpenType fonts
  38. EventTarget.addEventListener()
  39. EventTarget.dispatchEvent
  40. Exception handling (WebAssembly)
  41. Exception references with exnref (WebAssembly)
  42. Extended constant expressions (WebAssembly)
  43. Fetch metadata request headers
  44. fetchLater
  45. File handlers
  46. FLAC audio format
  47. focusin & focusout events
  48. Garbage collection (WebAssembly)
  49. GIF
  50. Global privacy control
  51. HEIF/HEIC image format
  52. HEVC/H.265 video format
  53. HTMLElement.innerText
  54. HTTP authentication
  55. HTTP Live Streaming (HLS)
  56. HTTP Strict Transport Security
  57. HTTP/1.1
  58. HTTP/2 protocol
  59. HTTP/3 protocol
  60. iterationComposite
  61. JavaScript promise integration (WebAssembly)
  62. JPEG
  63. JPEG 2000 image format
  64. JPEG XL image format
  65. JPEG XR image format
  66. KeyboardEvent.charCode
  67. KeyboardEvent.code
  68. KeyboardEvent.getModifierState()
  69. KeyboardEvent.key
  70. KeyboardEvent.location
  71. KeyboardEvent.which
  72. Launch handler
  73. MathML
  74. Media Fragments
  75. Memory64 (WebAssembly)
  76. Mixed content handling
  77. MP3 audio format
  78. MPEG-4/H.264 video format
  79. Multi-memory (WebAssembly)
  80. Mutation events
  81. Network Information
  82. Node.compareDocumentPosition()
  83. Node.textContent
  84. Ogg Vorbis audio format
  85. Ogg/Theora video format
  86. Opus audio format
  87. Partitioned cookies
  88. Passive event listeners
  89. PNG alpha transparency
  90. Protocol handlers
  91. querySelector/querySelectorAll
  92. Related apps
  93. Relaxed-width SIMD (WebAssembly)
  94. Reporting API
  95. Resource Hints: dns-prefetch
  96. Resource Hints: Lazyload
  97. Resource Hints: modulepreload
  98. Resource Hints: preconnect
  99. Resource Hints: prefetch
  100. Resource Hints: preload
  101. Resource Hints: prerender
  102. Save-Data
  103. Scoped custom element registries
  104. SDCH Accept-Encoding/Content-Encoding
  105. Shadow DOM (deprecated V0 spec)
  106. Shadow DOM (V1)
  107. Share targets
  108. Signature-based resource integrity
  109. Signed HTTP Exchanges (SXG)
  110. Sourcemap header
  111. SPDY protocol
  112. Spelling and grammar text decorations
  113. String builtins (WebAssembly)
  114. Summarizer
  115. Tail call optimization (WebAssembly)
  116. theme-color Meta Tag
  117. Typed function references (WebAssembly)
  118. Upgrade insecure requests
  119. URL Scroll-To-Text Fragment
  120. User agent client hints
  121. WAI-ARIA Accessibility features
  122. Wav audio format
  123. Web app manifest
  124. WebAssembly
  125. WebAssembly BigInt to i64 conversion in JS API
  126. WebAssembly Bulk Memory Operations
  127. WebAssembly Import/Export of Mutable Globals
  128. WebAssembly Multi-Value
  129. WebAssembly Non-trapping float-to-int Conversion
  130. WebAssembly Reference Types
  131. WebAssembly Sign Extension Operators
  132. WebAssembly SIMD
  133. WebAssembly Threads and Atomics
  134. WebDriver BiDi
  135. WEBGL_compressed_texture_s3tc_srgb WebGL extension
  136. WebM video format
  137. WebP image format
  138. WebVTT - Web Video Text Tracks
  139. Window Controls Overlay
  140. WOFF - Web Open Font Format
  141. WOFF 2.0 - Web Open Font Format
  142. XHTML served as application/xhtml+xml
  143. XHTML+SMIL animation
  144. zstd (Zstandard) content-encoding
  145. 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. ariaNotify()
  14. Asynchronous Clipboard API
  15. Asynchronously iterable streams
  16. Audio session
  17. AudioListener
  18. AudioWorklet
  19. Augmented reality
  20. Auxclick
  21. Back/forward cache blocking reasons
  22. Background fetch
  23. Background sync
  24. Background Sync API
  25. Badging
  26. Barcode detector
  27. BarProp
  28. Base64 encoding and decoding
  29. Basic console logging functions
  30. Battery Status API
  31. Beacon API
  32. beforeinstallprompt
  33. beforeunload
  34. Blob constructing
  35. Blob URLs
  36. BroadcastChannel
  37. Canvas createConicGradient()
  38. Canvas reset()
  39. Canvas roundRect()
  40. Capture Handle
  41. captureStream() for <audio> and <video>
  42. captureStream() for <canvas>
  43. Change event
  44. Channel messaging
  45. checkVisibility()
  46. Clipboard events
  47. clipboardchange
  48. ClipboardItem.supports()
  49. CloseWatcher
  50. Color management for 2D canvas
  51. Color management for WebGL
  52. Color management for WebGL2
  53. Composition events
  54. Compression streams
  55. console.time and console.timeEnd
  56. Constraint Validation API
  57. Constructed stylesheets
  58. Contact picker
  59. Content Index
  60. contextlost and contextrestored
  61. Cookie Store API
  62. cookieEnabled
  63. createImageBitmap
  64. Credential management
  65. Credential Management API
  66. Cross-document messaging
  67. Cross-Origin Resource Sharing
  68. crypto.getRandomValues()
  69. CSS object model
  70. CSS object model (DOM level 2)
  71. CSS typed object model
  72. CSS.escape()
  73. CSS.supports() API
  74. Custom formats for clipboard items
  75. Custom highlights from point
  76. CustomEvent
  77. Depth sensing
  78. Desynchronized 2D canvas
  79. Desynchronized WebGL canvas
  80. Desynchronized WebGL2 canvas
  81. DeviceOrientation & DeviceMotion events
  82. dialog.requestClose()
  83. Digital credentials
  84. Digital goods
  85. Directory selection from file input
  86. Do Not Track API
  87. Document colors
  88. Document Object Model Range
  89. Document picture-in-picture
  90. document.caretPositionFromPoint()
  91. document.currentScript
  92. document.evaluate & XPath
  93. Document.execCommand()
  94. document.write()
  95. DOM
  96. DOM Geometry
  97. DOM Parsing and Serialization
  98. DOMParser
  99. EditContext
  100. Efficient Script Yielding: setImmediate()
  101. Element capture
  102. Element timing
  103. Element.getBoundingClientRect()
  104. Element.insertAdjacentHTML()
  105. Element.scrollIntoViewIfNeeded()
  106. Encrypted Media Extensions
  107. Event timing
  108. execCommand()
  109. EXT_blend_minmax WebGL extension
  110. EXT_color_buffer_float WebGL extension
  111. EXT_color_buffer_half_float WebGL extension
  112. EXT_float_blend WebGL extension
  113. EXT_frag_depth WebGL extension
  114. EXT_shader_texture_lod WebGL extension
  115. EXT_sRGB WebGL extension
  116. EXT_texture_compression_bptc WebGL extension
  117. EXT_texture_compression_rgtc WebGL extension
  118. EXT_texture_filter_anisotropic WebGL extension
  119. EXT_texture_norm16 WebGL extension
  120. Eyedropper
  121. fastSeek()
  122. Feature Policy
  123. Federated credential management
  124. Federated credentials
  125. Fetch
  126. Fetch form data
  127. Fetch upload streams
  128. FIDO U2F API
  129. File API
  130. File System Access API
  131. FileReader API
  132. FileReaderSync
  133. Filesystem & FileWriter API
  134. Focus events
  135. Form-associated custom elements
  136. Gamepad (WebXR)
  137. Gamepad API
  138. Gamepad haptic feedback
  139. Gamepad touch buttons
  140. Gamepad VR hands and poses
  141. Geolocation
  142. getHTML()
  143. getUserMedia/Stream API
  144. Gyroscope
  145. Hand input
  146. High Resolution Time API
  147. Hit test
  148. ImageBitmapRenderingContext
  149. ImageCapture API
  150. Imperative slot assignment
  151. IndexedDB
  152. IndexedDB 2.0
  153. IndexedDB getAllRecords()
  154. Ink
  155. Input Method Editor API
  156. Insertable streams for MediaStreamTrack
  157. IntersectionObserver
  158. IntersectionObserver V2
  159. isInputPending()
  160. isSecureContext
  161. JavaScript modules in shared workers
  162. Keyboard events
  163. Keyboard lock
  164. Keyboard map
  165. KHR_parallel_shader_compile WebGL extension
  166. Language
  167. Language detector
  168. Largest contentful paint (LCP)
  169. Layers (WebXR)
  170. Layout instability
  171. Lighting estimation
  172. Local network access
  173. Location
  174. Locks
  175. Long animation frames
  176. Long tasks
  177. Magnetometer
  178. Managed media source
  179. matches() DOM method
  180. matchMedia
  181. Media capabilities
  182. Media Capture from DOM Elements API
  183. Media playback quality
  184. Media session
  185. Media Source Extensions
  186. MediaController
  187. MediaRecorder API
  188. MediaStream recording
  189. Memory measurement
  190. messageerror
  191. Mouse events
  192. moveBefore()
  193. Mutation Observer
  194. MutationObserver
  195. Navigation API
  196. Navigation precommit handlers
  197. Navigation timing
  198. Navigation Timing API
  199. Navigation timing confidence
  200. Navigator
  201. navigator.hardwareConcurrency
  202. Network Information API
  203. Non-cookie storage access
  204. Notifications
  205. Numeric factory functions
  206. Object RTC (ORTC) API for WebRTC
  207. Observable
  208. OES_draw_buffers_indexed WebGL extension
  209. OES_element_index_uint WebGL extension
  210. OES_fbo_render_mipmap WebGL extension
  211. OES_standard_derivatives WebGL extension
  212. OES_texture_float WebGL extension
  213. OES_texture_float_linear WebGL extension
  214. OES_texture_half_float WebGL extension
  215. OES_texture_half_float_linear WebGL extension
  216. OES_vertex_array_object WebGL extension
  217. OfflineAudioContext
  218. Online/offline status
  219. Orientation Sensor
  220. Orientation Sensor
  221. Origin
  222. Origin private file system
  223. OVR_multiview2 WebGL extension
  224. Page lifecycle
  225. Page Visibility
  226. Page visibility state
  227. Paint timing
  228. Passkeys
  229. Password credentials
  230. Payment handler
  231. Payment Request API
  232. pdfViewerEnabled
  233. PerformanceTiming and PerformanceNavigation
  234. Periodic background sync
  235. Permissions API
  236. Permissions Policy
  237. Picture-in-Picture
  238. Pointer Lock API
  239. preservesPitch
  240. Profiler
  241. Proximity API
  242. Push API
  243. queueMicrotask()
  244. Raw camera access for WebXR
  245. Read unsanitized clipboard data
  246. ReadableStream.from()
  247. Region capture
  248. registerProtocolHandler
  249. Related website sets
  250. requestAnimationFrame
  251. requestAnimationFrame() in workers
  252. requestIdleCallback
  253. requestVideoFrameCallback()
  254. Resize Observer
  255. Resource size
  256. Resource Timing (basic support)
  257. Sanitizer API
  258. Scheduler API
  259. Screen
  260. Screen Orientation
  261. Screen orientation lock
  262. Screen Wake Lock API
  263. Scroll methods on elements (scroll, scrollTo, scrollBy)
  264. Scroll snap events
  265. scrollend
  266. scrollIntoView
  267. scrollIntoView() container
  268. Secure payment confirmation
  269. Selection API
  270. Selection composed ranges
  271. Server Timing
  272. Server-sent events
  273. Service Workers
  274. setInterval
  275. setTimeout()
  276. Shared storage
  277. Shared storage locks
  278. Shared Web Workers
  279. SharedArrayBuffer in WebGL
  280. showPicker() for <input>
  281. showPicker() for <select>
  282. Speech Recognition API
  283. Speech Synthesis API
  284. Storage buckets
  285. Storage manager
  286. Streams
  287. Streams
  288. structuredClone()
  289. SVG clipboard items
  290. Synchronous Clipboard API
  291. TextEncoder & TextDecoder
  292. ToggleEvent source
  293. Touch events
  294. Transferable streams
  295. Translator
  296. Trusted Types for DOM manipulation
  297. Unsanitized HTML parsing methods
  298. URL API
  299. URL.canParse()
  300. URLPattern
  301. URLSearchParams
  302. User activation
  303. User agent sniffing
  304. User Timing API
  305. Vibration
  306. Vibration API
  307. Visual viewport API
  308. Web Animations API
  309. Web Audio API
  310. Web authentication easy public key access
  311. Web authentication signal methods
  312. Web Bluetooth
  313. Web Cryptography
  314. Web MIDI API
  315. Web NFC
  316. Web Notifications
  317. Web Serial API
  318. Web Share API
  319. Web Sockets
  320. Web SQL Database
  321. Web Storage - name/value pairs
  322. Web Workers
  323. WebCodecs API
  324. WEBGL_color_buffer_float WebGL extension
  325. WEBGL_compressed_texture_astc WebGL extension
  326. WEBGL_compressed_texture_etc WebGL extension
  327. WEBGL_compressed_texture_etc1 WebGL extension
  328. WEBGL_compressed_texture_pvrtc WebGL extension
  329. WEBGL_compressed_texture_s3tc WebGL extension
  330. WEBGL_debug_renderer_info WebGL extension
  331. WEBGL_debug_shaders WebGL extension
  332. WEBGL_depth_texture WebGL extension
  333. WEBGL_draw_buffers WebGL extension
  334. WEBGL_lose_context WebGL extension
  335. WEBGL_multi_draw WebGL extension
  336. WebGPU
  337. WebHID API
  338. WebRTC encoded transform
  339. WebRTC Peer-to-peer connections
  340. WebRTC SCTP information
  341. WebRTC statistics
  342. WebTransport
  343. WebUSB
  344. WebVR API
  345. WebVTT cue alignment
  346. WebVTT cue settings
  347. WebVTT regions
  348. WebXR Device API
  349. Wheel events
  350. willReadFrequently
  351. Window
  352. window.external
  353. window.print()
  354. XMLHttpRequest
  355. XMLHttpRequest advanced features
  356. XMLSerializer
  357. XSLT
  358. All JS API features