jQuery Hello World

For start , first include  jQuery library in you page. <script src=”jquery-1.3.2.min.js” type=”text/javascript”></script> or Another option is to reference jQuery library directly from google code. Then use below code in your page. <script type=”text/javascript”>   (function(){     alert(“HELLO WORLD!”);     });   </script> On load this script  display a alert box showing message “Hello World”.