Get checked checkbox
<html> <head> <script type="text/javascript" src="js/jquery-1.3.2.js"></script> <script type="text/javascript"> $(document).ready(function(){ var n = $("input:checked").length; $("div").text(n); }); </script> </head> <body> <form> <input type="checkbox" name="newsletter" checked="checked" /> <input type="checkbox" name="newsletter" checked="checked"/> </form> <div></div> <div> </div> </body> </html>