GlobalEventHandlers.onclose

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The onclose property of the GlobalEventHandlers mixin is an event handler for processing close events sent to a <dialog> element.

The close event fires when the user closes a <dialog>.

Note: To handle the closing of a window, use onbeforeunload or onunload.

Syntax

target.onclose = functionRef;

Value

functionRef is a function name or a function expression. The function receives an Event object as its sole argument.

Only one onclose handler can be assigned to an object at a time. You may prefer to use the EventTarget.addEventListener() method instead, since it's more flexible.

Specifications

Specification
HTML Standard (HTML)
# handler-onclose

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
onclose
32
79
53
No
19
No
4.4.3
32
53
19
No
2.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onclose