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

Draft
This page is not complete.

The onabort property of the GlobalEventHandlers mixin is the EventHandler for processing abort events sent to the window.

While the standard for aborting a document load is defined, HTML issue #3525 suggests that browsers should not currently fire the abort event on a Window that would trigger onabort to be called.

TODO: define what "abort" is. Closing the window via window manager? Stopping the load of the page? By which means and reasons (user, network/server)? At which stages would it fire / be caught? For IE, onabort is only available with <img> tags.

Syntax

window.onabort = functionRef;

Value

functionRef is a function name or a function expression.

Example

window.onabort = function() {
  alert('Load aborted.');
}

Specification

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
onabortChrome Full support YesEdge ? Firefox ? IE ? Opera ? Safari ? WebView Android Full support YesChrome Android Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

This property is not available with Firefox 2 or Safari.

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