问题:

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.

回答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.

回答2:

You can do of course - you prevent your form from submitting as usual, you take its data and perform a POST via jQuery:

$(form).submit(function(event){

    // prevents default behaviour, i.e. reloading the page
    event.preventDefault();

    $.post(

        $(this).attr('action'), // the form's action
        $(this).serializeArray(),   // the form data serialized
        function(data)
        {

            // what you are supposed to do with POST response from server

        }

    )

});