cant remove event handler of null code example
Example: javascript remove event listener not working
var someEventHander=function(){
console.log("do something");
}
var handlerCopy=someEventHandler.bind(var1,var2)
//add listener
document.getElementById("someid").addEventListener('click',handlerCopy,true);
//remove listener
document.getElementById("someid").removeEventListener('click',handlerCopy,true);