Forms ajax submit

gistfile1.js

$('input[type=submit]').not('.cancel').click(function (evt) {
           evt.preventDefault();
           var self = $(this);
           var frm = self.closest('form');
           frm.validate();
           if (frm.valid()) {
              
               $.ajax({
                   cache: false,
                   async: true,
                   type: "POST",
                   url: frm .attr('action'),
                   data: frm.serialize(),
                   success: function (data) {
                       alert(data);
                       //show success message
                   }
               });
               self.attr('disabled', 'disabled');

           }
       });