createEvent

gistfile1.js

function onInitPage(){
  document.querySelector('#btn').addEventListener('click', handler, false)

	var obj = document.querySelector('#btn');
	var evt = document.createEvent('MouseEvents');
	evt.initMouseEvent('click',true,true,window,10000,1000000000,0,0,0,false,false,false,false,0,null);
	obj.dispatchEvent(evt);
}
function handler(evt){
	console.dir(evt)
}


if(document.createEvent) {
	event = document.createEvent("HTMLEvents");
	event.initEvent("endofchart", true, true);
	cs.target.dispatchEvent(event);
} else {
	event = document.createEventObject();
	event.eventType = "endofchart";
	cs.target.fireEvent("on" + event.eventType, event);
}