WindowOrWorkerGlobalScope

The WindowOrWorkerGlobalScope mixin describes several features common to the Window and WorkerGlobalScope (en-US) 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 (en-US).

WindowOrWorkerGlobalScope.caches (en-US) Read only: Returns the CacheStorage (en-US) 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 (en-US) Read only: Provides a mechanism for applications to asynchronously access capabilities of indexed databases; returns an IDBFactory (en-US) object.
WindowOrWorkerGlobalScope.isSecureContext (en-US) Read only: Returns a boolean indicating whether the current context is secure (true) or not (false).
WindowOrWorkerGlobalScope.origin (en-US) 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 (en-US).

WindowOrWorkerGlobalScope.atob() (en-US): Decodes a string of data which has been encoded using base-64 encoding.
WindowOrWorkerGlobalScope.btoa() (en-US): Creates a base-64 encoded ASCII string from a string of binary data.
WindowOrWorkerGlobalScope.clearInterval(): Cancels the repeated execution set using WindowOrWorkerGlobalScope.setInterval() (en-US).
WindowOrWorkerGlobalScope.clearTimeout() (en-US): Cancels the delayed execution set using WindowOrWorkerGlobalScope.setTimeout() (en-US).
WindowOrWorkerGlobalScope.createImageBitmap() (en-US): Accepts a variety of different image sources, and returns a Promise (en-US) which resolves to an ImageBitmap (en-US). 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() (en-US): Schedules a function to execute every time a given number of milliseconds elapses.
WindowOrWorkerGlobalScope.setTimeout() (en-US): Schedules a function to execute in a given amount of time.

Specifications

Specification	Status	Comment
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.	Recommendation	Definition of the `indexedDB` property.
Secure Contexts The definition of 'isSecureContext' in that specification.	Candidate Recommendation	Definition of the `isSecureContext` property.

Browser compatibility

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