addEventListener .then code example

Example 1: js addeventlistener

var element=document.getElementById("some_id");
var listener=element.addEventListener('click',function(event){                          
            
 });

Example 2: event listener function called parameters

var someEventHander=function(event,param1,param2){
	console.log(event,param1,param2);
}
//add listener
document.getElementById("someid").addEventListener('click',someEventHander.bind(event,'param1','param2'), false);