WorkerGlobalScope.onclose

Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Summary

The onclose property of the WorkerGlobalScope interface represents an EventHandler to be called when the close event occurs and bubbles through the Worker.

This non-standard event handler was only implemented by a few browsers and has been removed from all or nearly all of them.

Syntax

self.onclose = function() { ... };

Example

The following code snippet shows an onclose handler set inside a worker:

self.onclose = function() {
  console.log('Your worker instance has been closed');
}

Specifications

This feature is no longer defined in any specifications.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support4 ?3.5 — 50 Yes11.54
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ?40 No4 — 50 Yes5.14.0

See also

Document Tags and Contributors

Contributors to this page: fscholz, DomenicDenicola, Sheppy, teoli, chrisdavidmills, kscarfone
Last updated by: fscholz,