Object doesn't support this action IE9 with CustomEvent Initialization

Question

I am getting the following error in IE9:

\"Object doesn\'t support this action\".

There are various question about this, but mine is specifically for the followi

Answer 1

Try this polyfill which doesn't replace a native (and functional) CustomEvent method.

(function () {
  try {
    new CustomEvent('test');
    return;
  } catch(e) {
    // ignore this error and continue below
  }

  function CustomEvent ( event, params ) {
    params = params || { bubbles: false, cancelable: false, detail: undefined };
    var evt = document.createEvent( 'CustomEvent' );
    evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
    return evt;
  };

  CustomEvent.prototype = window.Event.prototype;
  window.CustomEvent = CustomEvent;
})();