DedicatedWorkerGlobalScope

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.

Instance properties

This interface inherits properties from the WorkerGlobalScope interface, and its parent EventTarget.

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.

Instance properties inherited from WorkerGlobalScope

DedicatedWorkerGlobalScope.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.
DedicatedWorkerGlobalScope.console Read only Non-standard: Returns the console associated with the worker.
DedicatedWorkerGlobalScope.fonts Read only: Returns the FontFaceSet associated with the worker.
DedicatedWorkerGlobalScope.indexedDB Read only: Provides a mechanism for applications to asynchronously access capabilities of indexed databases; returns an IDBFactory object.
DedicatedWorkerGlobalScope.isSecureContext Read only: Returns a boolean indicating whether the current context is secure (true) or not (false).
DedicatedWorkerGlobalScope.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.
DedicatedWorkerGlobalScope.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.
DedicatedWorkerGlobalScope.origin Read only: Returns the global object's origin, serialized as a string.
DedicatedWorkerGlobalScope.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.
DedicatedWorkerGlobalScope.scheduler Read only: Returns the Scheduler object associated with the current context. This is the entry point for using the Prioritized Task Scheduling API.
DedicatedWorkerGlobalScope.self: Returns an object reference to the DedicatedWorkerGlobalScope object itself.

Instance methods

This interface inherits methods from the WorkerGlobalScope interface, and its parent EventTarget.

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

DedicatedWorkerGlobalScope.atob(): Decodes a string of data which has been encoded using base-64 encoding.
DedicatedWorkerGlobalScope.btoa(): Creates a base-64 encoded ASCII string from a string of binary data.
DedicatedWorkerGlobalScope.cancelAnimationFrame(): Cancels a callback scheduled by requestAnimationFrame.
DedicatedWorkerGlobalScope.clearInterval(): Cancels the repeated execution set using setInterval.
DedicatedWorkerGlobalScope.clearTimeout(): Cancels the repeated execution set using setTimeout.
DedicatedWorkerGlobalScope.dump() Deprecated Non-standard: Writes a message to the console.
DedicatedWorkerGlobalScope.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');
DedicatedWorkerGlobalScope.requestAnimationFrame(): Requests the browser to execute a callback function before painting the next frame.
DedicatedWorkerGlobalScope.setInterval(): Schedules the execution of a function every X milliseconds.
DedicatedWorkerGlobalScope.setTimeout(): Sets a delay for executing a function.

Events

message: Fired when the worker receives a message from its parent.
messageerror: Fired when a worker receives a message that can't be deserialized.

Specifications

Specification
HTML Standard # dedicated-workers-and-the-dedicatedworkerglobalscope-interface

Browser compatibility

BCD tables only load in the browser