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javascriptdom-events

Trigger (dispatchEvent) the 'onerror' with javascript?

In my code I did: element.onerror = my_function;

I am wondering how to forcefully trigger this event so I can test it?

Can someone show me how to use the dispatchEvent flow to do this?

Solution

  • OKAY I figured it out!

    var evt = document.createEvent('HTMLEvents');
evt.initEvent('error', false, false);
element.dispatchEvent(evt);

    I figured out that onerror is an 'HTMLEvents' according to google. Since the event name is error, the event is error, and I knew that error doesn't bubble, hence the false in the second parameter of initEvent.