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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.cachesТолько для чтения- Returns the
CacheStorageobject associated with the current context. This object enables functionality such as storing assets for offline use, and generating custom responses to requests. WindowOrWorkerGlobalScope.indexedDBТолько для чтения- Provides a mechanism for applications to asynchronously access capabilities of indexed databases; returns an
IDBFactoryobject. WindowOrWorkerGlobalScope.isSecureContextТолько для чтения- Returns a boolean indicating whether the current context is secure (
true) or not (false). WindowOrWorkerGlobalScope.originТолько для чтения- 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
Promisewhich resolves to anImageBitmap. 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 |
|---|---|---|
| HTML Living Standard Определение ' WindowOrWorkerGlobalScope mixin' в этой спецификации. |
Живой стандарт | This is where the main mixin is defined. |
| Fetch Определение 'fetch()' в этой спецификации. |
Живой стандарт | Definition of the fetch() method. |
| Service Workers Определение 'caches' в этой спецификации. |
Рабочий черновик | Definition of the caches property. |
| Indexed Database API 2.0 Определение 'indexedDB' в этой спецификации. |
Рекомендация | Definition of the indexedDB property. |
| Secure Contexts Определение 'isSecureContext' в этой спецификации. |
Кандидат в рекомендации | Definition of the isSecureContext property. |
Browser compatibility
We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!
| 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 |