W3cubDocs

/DOM

GlobalEventHandlers.onclose

An event handler for close events sent to the window. (Not available with Firefox 2 or Safari)

Syntax

window.onclose = funcRef;

Parameters

  • funcRef is a reference to a function.

Example

window.onclose = resetThatServerThing;

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'onclose' in that specification.		 Living Standard

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support Yes ? Yes ? ? No
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support Yes Yes ? Yes ? No ?

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https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onclose