jQuery append Method

<!DOCTYPE html>
<html>
<head>
<title>jQuery Demo example</title>
 <script type="text/javascript" src="http://code.jquery.com/jquery-2.1.4.min.js">
 </script>
<script type="text/javascript">
         $(document).ready(function(){ 
              $( "#appendExample" ).on( "click", function(event) {             
                $("div").append("<h3>Append text.......</h3>");               
              });
               
          });
</script>
<style>
div{
margin:10px;
min-height:300px;
min-width:300px;
border:1px solid blue;
float:left;

}
</style>

</head>	
<body>
<h4 ><a href="javascript:void(0);" id="appendExample">Click to run .append() Example </a></h4> 
<div  style="background:yellow;border:1px solid green;padding:0px;" >

<p style="margin:10px;border:1px solid red;">Demo div..........................content will be added after me.................</p>
</div>
</body>
</html>