js how to target event code example

Example 1: JAVASCRIPT EVENT.TARGET

event.target returns the node that was targeted by the function. 
This means you can do anything you would do with any other node like one
you'd get from document.getElementById

Example 2: event target javascript

Using the event.target property together with the element.tagName property to find out which element triggered a specified event:

<body onclick="myFunction(event)">
<p>Click on any elements in this document to find out which element triggered the onclick event.</p>
<h1>This is a heading</h1>
<button>This is a button</button>
<p id="demo"></p>

<script>
function myFunction(event) { 
  var x = event.target;
  document.getElementById("demo").innerHTML = "Triggered by a " + x.tagName + " element";
}
</script>