WindowOrWorkerGlobalScope

The WindowOrWorkerGlobalScope mixin describes several features common to the Window and WorkerGlobalScope interfaces. Each of these interfaces can, of course, add more features in addition to the ones listed below.

Note: WindowOrWorkerGlobalScope is a mixin and not an interface; you can't actually create an object of type WindowOrWorkerGlobalScope.

Properties

These properties are defined on the WindowOrWorkerGlobalScope mixin, and implemented by Window and WorkerGlobalScope.

WindowOrWorkerGlobalScope.caches Read only: Returns the CacheStorage object associated with the current context. This object enables functionality such as storing assets for offline use, and generating custom responses to requests.
WindowOrWorkerGlobalScope.indexedDB Read only: Provides a mechanism for applications to asynchronously access capabilities of indexed databases; returns an IDBFactory object.
WindowOrWorkerGlobalScope.isSecureContext Read only: Returns a boolean indicating whether the current context is secure (true) or not (false).
WindowOrWorkerGlobalScope.origin Read only: Returns the origin of the global scope, serialized as a string.

Methods

These properties are defined on the WindowOrWorkerGlobalScope mixin, and implemented by Window and WorkerGlobalScope.

WindowOrWorkerGlobalScope.atob(): Decodes a string of data which has been encoded using base-64 encoding.
WindowOrWorkerGlobalScope.btoa(): Creates a base-64 encoded ASCII string from a string of binary data.
WindowOrWorkerGlobalScope.clearInterval(): Cancels the repeated execution set using WindowOrWorkerGlobalScope.setInterval().
WindowOrWorkerGlobalScope.clearTimeout(): Cancels the delayed execution set using WindowOrWorkerGlobalScope.setTimeout().
WindowOrWorkerGlobalScope.createImageBitmap(): Accepts a variety of different image sources, and returns a Promise which resolves to an ImageBitmap. Optionally the source is cropped to the rectangle of pixels originating at (sx, sy) with width sw, and height sh.
WindowOrWorkerGlobalScope.fetch(): Starts the process of fetching a resource from the network.
WindowOrWorkerGlobalScope.setInterval(): Schedules a function to execute every time a given number of milliseconds elapses.
WindowOrWorkerGlobalScope.setTimeout(): Schedules a function to execute in a given amount of time.

Specifications

Specification	Status	Comment
WHATWG HTML Living Standard The definition of '`WindowOrWorkerGlobalScope` mixin' in that specification.	Living Standard	This is where the main mixin is defined.
Fetch The definition of 'fetch()' in that specification.	Living Standard	Definition of the `fetch()` method.
Service Workers The definition of 'caches' in that specification.	Working Draft	Definition of the `caches` property.
Indexed Database API 2.0 The definition of 'indexedDB' in that specification.	Editor's Draft	Definition of the `indexedDB` property.
Secure Contexts The definition of 'isSecureContext' in that specification.	Working Draft	Definition of the `isSecureContext` property.

Feature	Firefox (Gecko)	Chrome	Edge	Internet Explorer	Opera	Safari
Basic support	52 (52)	54	?	?	?	?
`origin`	54 (54)	59	?	?	?	?

Feature	Android Webview	Edge	Firefox Mobile (Gecko)	Android	IE Mobile	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	?	?	52.0 (52)	?	?	?	?	54
`origin`	?	?	54.0 (54)	?	?	?	?	59

Properties

Methods

Specifications

Browser compatibility

See also

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