How to get class attribute details using JQuery ?

How to get class attribute details using JQuery ?

Hi All,
 
 
I'm using below code.
 
 

<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  });
</script>
<style type="text/css">
.blue
{
color:blue;
font-size:xx-large;












}
</style>
</head>
<body>


<h1 class="blue">Heading 1</h1>
</body>
</html>

 
 
How to get blue class attribute names and values using JQuery
 
 
Thanks,
Nazeer