SharedWorkerGlobalScope

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

See full compatibility

The SharedWorkerGlobalScope object (the SharedWorker 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 the complete list of functions available to workers.

Instance properties

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

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

Instance methods

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

SharedWorkerGlobalScope.close(): Discards any tasks queued in the SharedWorkerGlobalScope's event loop, effectively closing this particular scope.

Events

Listen to this event using addEventListener() or by assigning an event listener to the oneventname property of this interface.

connect: Fired on shared workers when a new client connects.

Specifications

Specification
HTML # shared-workers-and-the-sharedworkerglobalscope-interface

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`SharedWorkerGlobalScope`	Chrome – Full support Chrome 4 (Release date: 2010-01-25) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 29 (Release date: 2014-04-29) footnote Full support	Opera – Full support Opera 10.6 (Release date: 2010-07-01) footnote Full support	Safari – No support Safari 5 – 6 (Release date: 2010-06-07) footnote Removed in 7 and later Safari – Full support Safari 16 (Release date: 2022-09-12) footnote Full support	Chrome Android – Preview support Chrome Android 148 (Release date: 2026-05-05) footnote Preview browser support	Firefox for Android – Full support Firefox for Android 29 (Release date: 2014-04-29) footnote Full support	Opera Android – Full support Opera Android 11 (Release date: 2011-03-22) footnote Full support	Safari on iOS – No support Safari on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later Safari on iOS – Full support Safari on iOS 16 (Release date: 2022-09-12) footnote Full support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Preview support WebView Android 148 (Release date: 2026-05-05) footnote Preview browser support	WebView on iOS – No support WebView on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later WebView on iOS – Full support WebView on iOS 16 (Release date: 2022-09-12) footnote Full support
`close`	Chrome – Full support Chrome 4 (Release date: 2010-01-25) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 29 (Release date: 2014-04-29) footnote Full support	Opera – Full support Opera 10.6 (Release date: 2010-07-01) footnote Full support	Safari – No support Safari 5 – 6 (Release date: 2010-06-07) footnote Removed in 7 and later Safari – Full support Safari 16 (Release date: 2022-09-12) footnote Full support	Chrome Android – Preview support Chrome Android 148 (Release date: 2026-05-05) footnote Preview browser support	Firefox for Android – Full support Firefox for Android 29 (Release date: 2014-04-29) footnote Full support	Opera Android – Full support Opera Android 11 (Release date: 2011-03-22) footnote Full support	Safari on iOS – No support Safari on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later Safari on iOS – Full support Safari on iOS 16 (Release date: 2022-09-12) footnote Full support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Preview support WebView Android 148 (Release date: 2026-05-05) footnote Preview browser support	WebView on iOS – No support WebView on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later WebView on iOS – Full support WebView on iOS 16 (Release date: 2022-09-12) footnote Full support
`connect` event	Chrome – Full support Chrome 4 (Release date: 2010-01-25) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 29 (Release date: 2014-04-29) footnote footnote Before version 65 the `data` property of the event object was `null`; it is now initialized to an empty string, as per spec.	Opera – Full support Opera 10.6 (Release date: 2010-07-01) footnote Full support	Safari – No support Safari 5 – 6 (Release date: 2010-06-07) footnote Removed in 7 and later Safari – Full support Safari 16 (Release date: 2022-09-12) footnote Full support	Chrome Android – Preview support Chrome Android 148 (Release date: 2026-05-05) footnote Preview browser support	Firefox for Android – Full support Firefox for Android 29 (Release date: 2014-04-29) footnote footnote Before version 65 the `data` property of the event object was `null`; it is now initialized to an empty string, as per spec.	Opera Android – Full support Opera Android 11 (Release date: 2011-03-22) footnote Full support	Safari on iOS – No support Safari on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later Safari on iOS – Full support Safari on iOS 16 (Release date: 2022-09-12) footnote Full support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Preview support WebView Android 148 (Release date: 2026-05-05) footnote Preview browser support	WebView on iOS – No support WebView on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later WebView on iOS – Full support WebView on iOS 16 (Release date: 2022-09-12) footnote Full support
`name`	Chrome – Full support Chrome 4 (Release date: 2010-01-25) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 29 (Release date: 2014-04-29) footnote Full support	Opera – Full support Opera 10.6 (Release date: 2010-07-01) footnote Full support	Safari – No support Safari 5 – 6 (Release date: 2010-06-07) footnote Removed in 7 and later Safari – Full support Safari 16 (Release date: 2022-09-12) footnote Full support	Chrome Android – Preview support Chrome Android 148 (Release date: 2026-05-05) footnote Preview browser support	Firefox for Android – Full support Firefox for Android 29 (Release date: 2014-04-29) footnote Full support	Opera Android – Full support Opera Android 11 (Release date: 2011-03-22) footnote Full support	Safari on iOS – No support Safari on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later Safari on iOS – Full support Safari on iOS 16 (Release date: 2022-09-12) footnote Full support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Preview support WebView Android 148 (Release date: 2026-05-05) footnote Preview browser support	WebView on iOS – No support WebView on iOS 5 – 6 (Release date: 2011-10-12) footnote Removed in 7 and later WebView on iOS – Full support WebView on iOS 16 (Release date: 2022-09-12) footnote Full support

Tip: you can click/tap on a cell for more information.

Full support: Full support
In development. Supported in a pre-release version.: In development. Supported in a pre-release version.
No support: No support
: See implementation notes.
: Has more compatibility info.