.addClass() method is used to add class to some elements.
Example :-
<style>
.myclass { color:red; font-size:25px; }
.paragraph { color:blue; font-size:20px; }
</style>
<script type=”text/javascript” src=”http://code.jquery.com/jquery-1.5.js”></script>
<script type=”text/javascript”>
$(document).ready(function (){
$(‘div’).addClass(‘myclass’);
$(‘p’).addClass(‘paragraph’);
});
</script>
<div align=”center”>I am div1</div>
<p align=”center”>I am paragraph</div>
<div align=”center”>I am div2</div>