Map value with index and value
<html> <head> <script type="text/javascript" src="js/jquery-1.3.2.js"></script> <script type="text/javascript"> $(document).ready(function(){ var arr = [ "a", "b", "c", "d", "e" ] arr = jQuery.map(arr, function(n, i){ return (n.toUpperCase() + i); }); alert(arr); }); </script> </head> <body> <body> <p></p><p></p><p></p> </body> </html>