Intercept form POST string and send via AJAX instead

Question

Is it possible to intercept a form's POST string and send it via AJAX instead? I could use $('form').submit() to intercept the POST event, but I don't see where I can get the POST string from. I could reproduce the string from the form's inputs, but this seems dubious.

Answer 1

// capture submit
$('form').submit(function() {
     var $theForm = $(this);

     // send xhr request
     $.ajax({
         type: $theForm.attr('method'),
         url: $theForm.attr('action'),
         data: $theForm.serialize(),
         success: function(data) {
             console.log('Yay! Form sent.');
         }
     });

     // prevent submitting again
     return false;
});

Note that as Phil stated in his comment that .serialize() doesn't include the submit button. If you also need to value of the submit buton you would have to add it manually.