XMLHttpRequestEventTarget

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.

XMLHttpRequestEventTarget is the interface that describes the event handlers shared on XMLHttpRequest and XMLHttpRequestUpload.

You don't use XMLHttpRequestEventTarget directly; instead you interact with the sub classes.

Events

The following events are made available to XMLHttpRequest and XMLHttpRequestUpload:

abort: Fired when a request has been aborted, for example because the program called XMLHttpRequest.abort(). Also available via the onabort event handler property.
error: Fired when the request encountered an error. Also available via the onerror event handler property.
load: Fired when a request transaction completes successfully. Also available via the onload event handler property.
loadend: Fired when a request has completed, whether successfully (after load) or unsuccessfully (after abort or error). Also available via the onloadend event handler property.
loadstart: Fired when a request has started to load data. Also available via the onloadstart event handler property.
progress: Fired periodically when a request receives more data. Also available via the onprogress event handler property.
timeout: Fired when progress is terminated due to preset time expiring. Also available via the ontimeout event handler property.

Specification
XMLHttpRequest # xmlhttprequesteventtarget

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`XMLHttpRequestEventTarget`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 1 (Release date: 2004-11-09) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 1 (Release date: 2003-06-23) 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 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 1 (Release date: 2007-06-29) 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 1 (Release date: 2007-06-29) footnote Full support

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