On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 53 on 2016-08-31 Note: The onerror event handler property is not supported.
In Chrome Android version 53 on 2016-09-07 Note: The onerror event handler property is not supported.
In Edge version 17 on 2018-04-30 Note: The onerror event handler property is not supported.
In Firefox version 42 on 2015-11-03
In Firefox for Android version 42 on 2015-11-03
In Internet Explorer version 11 on 2013-10-17 Note: Only works on Windows 8+.
In Quest Browser version 5.0 on undefined
In Opera version 40 on 2016-09-20 Note: The onerror event handler property is not supported.
In Opera Android version 41 on 2016-10-25 Note: The onerror event handler property is not supported.
In Safari version 10.1 on 2017-03-27 Note: The onerror event handler property is not supported.
In Safari on iOS version 13 on 2019-09-19 Note: Exposed in Mobile Safari on iPad but not on iPhone.
In Samsung Internet version 6.0 on 2017-08-23 Note: The onerror event handler property is not supported.
In WebView Android version 53 on 2016-09-07 Note: The onerror event handler property is not supported.
Not in WebView on iOS