send form data via ajax to php script

gistfile1.js

(function(){
/* Script that compiles values of form
 * the sends them via ajax to php script
 * php script will send back json after validation process
 * use the console logs for debugging
 */

// you might need a better selector -> select your form
var form = $('form'),
    // compile all values
    compile = function(){
        var values = [], selected;
        form.find('input').each(function(){
            values.push($(this).attr('name') + '=' + $(this).val());
        });

        form.find('select').each(function(){
            selected = $(this).find('option:selected');
            values.push($(this).attr('name') + '=' + selected.val());
        });

        return values.join('&');

    },
    //send values via ajax
    send = function(){
        var compiled_values = compile(),
            loading = $('.loading_reg');

            form.find('input').add('select').removeClass('error_');
            //hide the error message
            //errorMsg.hide();
        //loading show
        //loading.show();

        $.ajax({
            url : 'path-to/mail-script.php',
            dataType: 'json',
            data: compiled_values,
            type: 'POST',
            error: function(err){

              //console.log(err);

              //Show an error prompt

            },
            success: function(res){

                //console.log(res);
                // loading hide
                //loading.hide();
                //console.log(res);
                if(res.status === 'success'){
                    // replace form content with success msg
                    form.html(res.message);
                }else{
                    var i = 0;
                    while(i < res.message.length){

                        $('.' + res.message[i]).addClass('error_');

                        i += 1;
                    }
                    // show the error
                    //errorMsg.show();
                }


            }
        });
        return false;
    };

   // attach to the submit button
    form.find('input[type=submit]').bind('click', function(){
        send();
    });
}(jQuery));