Event Delegation

Event Bubbling
When a child element is clicked, the event bubbles all the way up the dom. This means that you can capture the child element that was activated through the bubbling up effect from the parent.
You can capture the event by passing the even to the function and capturing the target

var myfun = function(event){
console.log(event.target)
} // the 'event' text could be anything 'e' etc..

To traverse the DOM one parent up you you use

event.target.parentNode

To go up several parent up:

event.target.parentNode.parentNode.parentNode  /// etc..