On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Bun version 1.0.0 on 2023-09-08
In Chrome version 1 on 2008-12-11
In Chrome Android version 18 on 2012-06-27
In Deno version 1.0 on 2020-05-13
In Edge version 12 on 2015-07-29
In Firefox version 1 on 2004-11-09
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer version 6 on 2001-08-27
In Node.js version 15.0.0 on 2020-10-20 Note: Only available as an internal instance.
In Quest Browser version 5.0 on undefined
In Opera version 7 on 2003-01-28
In Opera Android version 10.1 on 2010-11-09
In Safari version 1 on 2003-06-23 Note: window.EventTarget did not exist on versions of Safari before 10.1.
In Safari on iOS version 1 on 2007-06-29 Note: window.EventTarget did not exist on versions of Safari iOS before 10.3.
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 1 on 2008-09-23
In WebView on iOS version 1 on 2007-06-29 Note: window.EventTarget did not exist on versions of Safari iOS before 10.3.