WindowOrWorkerGlobalScope

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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.

Browser compatibility

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

 

See also

Étiquettes et contributeurs liés au document

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