How to add a onclick event to an element using javascript

Question

I have created an element using document.getElementsByClassname, and would like to add a onclick event to this element, so that when someone clicks on this element onclick f

Answer 1

I was able to add an onclick event to an element using following javascript code

list_title = document.createElement('UL');
list_title.onclick=function() {

    // place your code here
};