How to programmatically fire a dblclick event defined with addEventListener?

Question

For JS Unit test, I need to check that a double-click behaves as expected. The issue is that the event was registered via element.addEventListener. And for some reason, in t

Answer 1

This should work:

var doubleClickEvent = document.createEvent('MouseEvents');
doubleClickEvent.initEvent('dblclick', true, true);
e.currentTarget.dispatchEvent(doubleClickEvent); // inside method

Answer 2

You can use dispatchEvent to programatically trigger events:

var event = new MouseEvent('dblclick', {
    'view': window,
    'bubbles': true,
    'cancelable': true
  });
document.getElementById('aa').dispatchEvent(event);

See the section "Triggering built-in events" on MDN.

Here is a fiddle of the code in action.