Worker: terminate() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Note: This feature is available in Web Workers, except for Service Workers.

The terminate() method of the Worker interface immediately terminates the Worker. This does not offer the worker an opportunity to finish its operations; it is stopped at once.

Syntax

js
terminate()

Parameters

None.

Return value

None (undefined).

Examples

The following code snippet shows creation of a Worker object using the Worker() constructor, which is then immediately terminated.

js
const myWorker = new Worker("worker.js");

myWorker.terminate();

Note: DedicatedWorkers and SharedWorkers can also be stopped from the Worker instance using the DedicatedWorkerGlobalScope.close() or SharedWorkerGlobalScope.close() methods.

Specifications

Specification
HTML
# dom-worker-terminate-dev

Browser compatibility

desktop mobile server
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Bun
Deno
Node.js
terminate
Chrome – Full support
Chrome 2 (Release date: 2009-05-21)
footnote Full support
Edge – Full support
Edge 12 (Release date: 2015-07-29)
footnote Full support
Firefox – Full support
Firefox 3.5 (Release date: 2009-06-30)
footnote Full support
Opera – Full support
Opera 10.6 (Release date: 2010-07-01)
footnote Full support
Safari – Full support
Safari 4 (Release date: 2009-06-08)
footnote Full support
Chrome Android – Full support
Chrome Android 18 (Release date: 2012-06-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 4 (Release date: 2011-03-29)
footnote Full support
Opera Android – Full support
Opera Android 11 (Release date: 2011-03-22)
footnote Full support
Safari on iOS – Full support
Safari on iOS 5 (Release date: 2011-10-12)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1 (Release date: 2013-04-27)
footnote Full support
WebView Android – Full support
WebView Android 4.4 (Release date: 2013-12-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 5 (Release date: 2011-10-12)
footnote Full support
Bun – Full support
Bun 1 (Release date: 2023-09-08)
footnote Full support
Deno – Full support
Deno 1 (Release date: 2020-05-13)
footnote Full support
Node.js – Partial support
Node.js 11.7 – 12 (Release date: 2019-01-18)
footnote Partial support
footnote Takes an optional callback parameter to be executed when the worker has terminated.
Node.js – Partial support
Node.js 12.5 (Release date: 2019-06-27)
footnote Partial support
footnote Returns a Promise.

Legend

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

Full support
Full support
Partial support
Partial support
Has more compatibility info.

See also