Attaching a click event to multiple elements at once? [duplicate]

Answer 1

Suppose you want to add click event to multiple elements, then set their class name as for example demo

demos= document.getElementsByClassName('demo');
for (var i = 0; i < demos.length; i++) {
    demos[i].addEventListener('click',redirect,false);
}
function redirect(){
    alert(this.id);
}

WORKING FIDDLE