Brotli Accept-Encoding/Content-Encoding
More effective lossless compression algorithm than gzip and deflate.
Web Cryptography
JavaScript API for performing basic cryptographic operations in web applications
:optional CSS pseudo-class
The `:optional` pseudo-class matches form inputs (`<input>`, `<textarea>`, `<select>`) which are not `:required`.
Encrypted Media Extensions
The EncryptedMediaExtenstions API provides interfaces for controlling the playback of content which is subject to a DRM scheme.
ECMAScript 5
Full support for the ECMAScript 5 specification. Features include `Function.prototype.bind`, Array methods like `indexOf`, `forEach`, `map` & `filter`, Object methods like `defineProperty`, `create` & `keys`, the `trim` method on Strings and many more.
ECMAScript 2015 (ES6)
Support for the ECMAScript 2015 specification. Features include Promises, Modules, Classes, Template Literals, Arrow Functions, Let and Const, Default Parameters, Generators, Destructuring Assignment, Rest & Spread, Map/Set & WeakMap/WeakSet and many more.
JavaScript modules: dynamic import()
Loading JavaScript modules dynamically using the import() syntax
HTML Media Capture
Facilitates user access to a device's media capture mechanism, such as a camera, or microphone, from within a file upload control.
ImageCapture API
The Image Capture API provides access to the Video Camera for taking photos while configuring picture-specific settings such as e.g. zoom or auto focus metering area.
Media Capture from DOM Elements API
API to capture Real-Time video and audio from a DOM element, such as a `<video>`, `<audio>`, or `<canvas>` element via the `captureStream` method, in the form of a `MediaStream`
async attribute for external scripts
The boolean async attribute on script elements allows the external JavaScript file to run when it's available, without delaying page load first.
defer attribute for external scripts
The boolean defer attribute on script elements allows the external JavaScript file to run when the DOM is loaded, without delaying page load first.
SDCH Accept-Encoding/Content-Encoding
Shared Dictionary Compression over HTTP
X-Frame-Options HTTP header
An HTTP header which indicates whether the browser should allow the webpage to be displayed in a frame within another webpage. Used as a defense against clickjacking attacks.
css api: `pt()` static method
javascript built-in: asyncdisposablestack: adopt
javascript built-in: disposablestack: adopt
javascript built-in: intl: collator: resolvedoptions
javascript built-in: intl: datetimeformat: resolvedoptions
javascript built-in: intl: datetimeformat: resolvedoptions: computed `timezone`
javascript built-in: intl: displaynames: resolvedoptions
javascript built-in: intl: durationformat: resolvedoptions
javascript built-in: intl: listformat: resolvedoptions
javascript built-in: intl: locale: script
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.currencydisplay` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.currencysign` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.currency` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.maximumfractiondigits` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.minimumfractiondigits` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.minimumintegerdigits` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.roundingincrement` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.roundingmode` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.roundingpriority` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.style` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.trailingzerodisplay` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.unitdisplay` parameter
javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.unit` parameter
javascript built-in: intl: numberformat: resolvedoptions
javascript built-in: intl: pluralrules: `pluralrules()` constructor: `options` parameter: `options.roundingincrement` parameter
javascript built-in: intl: pluralrules: `pluralrules()` constructor: `options` parameter: `options.roundingmode` parameter
javascript built-in: intl: pluralrules: `pluralrules()` constructor: `options` parameter: `options.roundingpriority` parameter
javascript built-in: intl: pluralrules: `pluralrules()` constructor: `options` parameter: `options.trailingzerodisplay` parameter
javascript built-in: intl: pluralrules: resolvedoptions
javascript built-in: intl: relativetimeformat: resolvedoptions
javascript built-in: intl: segmenter: resolvedoptions
javascript built-in: object: getownpropertydescriptor
javascript built-in: object: getownpropertydescriptors
javascript built-in: reflect: getownpropertydescriptor
javascript built-in: symbol: description
javascript statement: empty statement (`;`)
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