这适用于Firefox： p>

  var DOMContentLoaded_event = document.createEvent（Event）
 DOMContentLoaded_event.initEvent（DOMContentLoaded，true，true）
 window.document.dispatchEvent（DOMContentLoaded_event）
 

Is there any way to manually fire the DOMContentLoaded event? I'm trying to write a unit-test for some client-side javascript which does some stuff on the DOMContentLoaded event.

The following did not work: document.dispatchEvent("DOMContentLoaded") or document.body.dispatchEvent("DOMContentLoaded");

This works for me in Firefox:

var DOMContentLoaded_event = document.createEvent("Event")
DOMContentLoaded_event.initEvent("DOMContentLoaded", true, true)
window.document.dispatchEvent(DOMContentLoaded_event)