WorkerGlobalScope.close()

Deprecated
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The close() method of the WorkerGlobalScope interface discards any tasks queued in the WorkerGlobalScope's event loop, effectively closing this particular scope.

Syntax

self.close();

Example

If you wanted to close your worker instance from inside the worker itself, you could call the following:

close();

close() and self.close() are effectively equivalent — both represent close() being called from inside the worker's inner scope.

Note: there is also a way to stop the worker from the main thread: the Worker.terminate method.

Specifications

Specification	Status	Comment
HTML Living Standard The definition of 'close()' in that specification.	Living Standard

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`close` DeprecatedNon-standard	Chrome Full support 4	Edge ?	Firefox Full support 3.5	IE Full support Yes	Opera Full support 11.5	Safari Full support 4	WebView Android Full support 37	Chrome Android Full support Yes	Firefox Android Full support 4	Opera Android ?	Safari iOS ?	Samsung Internet Android Full support Yes
`close()` moved to `DedicatedWorkerGlobalScope` and `SharedWorkerGlobalScope`	Chrome Full support 52	Edge ?	Firefox Full support 54	IE ?	Opera ?	Safari ?	WebView Android Full support 52	Chrome Android Full support 52	Firefox Android Full support 54	Opera Android ?	Safari iOS ?	Samsung Internet Android Full support 6.0

Legend

Full support: Full support
Compatibility unknown: Compatibility unknown
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.