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The DedicatedWorkerGlobalScope object (the Worker global scope) is accessible through the self keyword. Some additional global functions, namespaces objects, and constructors, not typically associated with the worker global scope, but available on it, are listed in the JavaScript Reference. See also: Functions available to workers.

Properties

This interface inherits properties from the WorkerGlobalScope interface, and its parent EventTarget, and therefore implements properties from WindowTimers, WindowBase64, and WindowEventHandlers.

DedicatedWorkerGlobalScope.name Read only
The name that the Worker was (optionally) given when it was created using the Worker() constructor. This is mainly useful for debugging purposes.

Properties inherited from WorkerGlobalScope

WorkerGlobalScope.self
Returns an object reference to the DedicatedWorkerGlobalScope object itself.
WorkerGlobalScope.console Read only
Returns the Console associated with the worker.
WorkerGlobalScope.location Read only
Returns the WorkerLocation associated with the worker. WorkerLocation is a specific location object, mostly a subset of the Location for browsing scopes, but adapted to workers.
WorkerGlobalScope.navigator Read only
Returns the WorkerNavigator associated with the worker. WorkerNavigator is a specific navigator object, mostly a subset of the Navigator for browsing scopes, but adapted to workers.
WorkerGlobalScope.performance Read only
Returns the Performance object associated with the worker, which is a regular performance object, but with a subset of its properties and methods available.

Event handlers

This interface inherits event handlers from the WorkerGlobalScope interface, and its parent EventTarget, and therefore implements event handlers from WindowTimers, WindowBase64, and WindowEventHandlers.

DedicatedWorkerGlobalScope.onmessage
Is an EventHandler representing the code to be called when the message event is raised. These events are of type MessageEvent and will be called when the worker receives a message from the document that started it (i.e. from the Worker.postMessage method.)
DedicatedWorkerGlobalScope.onmessageerror
Is an EventHandler representing the code to be called when the messageerror event is raised.

Methods

This interface inherits methods from the WorkerGlobalScope interface, and its parent EventTarget, and therefore implements methods from WindowTimers, WindowBase64, and WindowEventHandlers.

DedicatedWorkerGlobalScope.close()
Discards any tasks queued in the WorkerGlobalScope's event loop, effectively closing this particular scope.
DedicatedWorkerGlobalScope.postMessage()
Sends a message — which can consist of any JavaScript object — to the parent document that first spawned the worker.

Inherited from WorkerGlobalScope

WorkerGlobalScope.dump()
Writes a message to the console.
WorkerGlobalScope.importScripts()
Imports one or more scripts into the worker's scope. You can specify as many as you'd like, separated by commas. For example: importScripts('foo.js', 'bar.js');

Implemented from other places

WindowBase64.atob()
Decodes a string of data which has been encoded using base-64 encoding.
WindowBase64.btoa()
Creates a base-64 encoded ASCII string from a string of binary data.
WindowTimers.clearInterval()
Cancels the repeated execution set using WindowTimers.setInterval().
WindowTimers.clearTimeout()
Cancels the repeated execution set using WindowTimers.setTimeout().
WindowTimers.setInterval()
Schedules the execution of a function every X milliseconds.
WindowTimers.setTimeout()
Sets a delay for executing a function.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'DedicatedWorkerGlobalScope' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 4Edge ? Firefox Full support 3.5IE Full support 10Opera Full support 10.6Safari Full support 4WebView Android ? Chrome Android Full support YesEdge Mobile ? Firefox Android Full support 4Opera Android Full support 11.5Safari iOS Full support 5.1Samsung Internet Android Full support Yes
nameChrome Full support YesEdge ? Firefox Full support 55IE No support NoOpera ? Safari No support NoWebView Android ? Chrome Android Full support YesEdge Mobile ? Firefox Android Full support 55Opera Android ? Safari iOS No support NoSamsung Internet Android Full support Yes
onmessageChrome Full support 4Edge ? Firefox Full support 3.5IE Full support 10Opera Full support 10.6Safari Full support 4WebView Android ? Chrome Android Full support YesEdge Mobile ? Firefox Android Full support 4Opera Android Full support 11.5Safari iOS Full support 5.1Samsung Internet Android Full support Yes
onmessageerrorChrome Full support 60Edge ? Firefox Full support 57IE ? Opera Full support 47Safari ? WebView Android Full support 60Chrome Android Full support 60Edge Mobile ? Firefox Android Full support 57Opera Android Full support 47Safari iOS ? Samsung Internet Android No support No
closeChrome Full support YesEdge ? Firefox Full support 54IE ? Opera Full support YesSafari ? WebView Android Full support YesChrome Android Full support YesEdge Mobile ? Firefox Android Full support 54Opera Android Full support YesSafari iOS ? Samsung Internet Android Full support Yes
postMessageChrome Full support 4Edge ? Firefox Full support 3.5IE Full support 10Opera Full support 10.6Safari Full support 4WebView Android Full support YesChrome Android Full support YesEdge Mobile ? Firefox Android Full support 4Opera Android Full support 11.5Safari iOS Full support 5.1Samsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown

See also

Etiquetas do documento e colaboradores

Última atualização por: connorshea,