Ajax Form

// Type a code for easy use of contact form details.
window.$config {
    succes: {
        message: 'Succes send your message, thank you.'
    },
    error: {
        message: 'Oops! An error occured and your message could not be sent.'
    }
};

/*
* Ajax form submit php method form, is for stefanpatrascu.com
* http://www.extrem-tutorials.com
* Copyright (c) 2015 Mr Stark. All right reserved !
*/
$(function(j) {
    // Form data
    var $form = j('form#contactForm'),

    // Get the messages div.
    $formMessage = j('textarea#message', $form);

    // Stop submit form data
    j($form).on("submit", function(function(event) {
        event.preventDefault();
    });

    // Serialize the form data.
    var $formData = $($form).serialize();

    // Submit the form using AJAX.
    $.ajax({
    type: 'POST',
    url: $(form).attr('action'),
    data: formData
    }).done(function(response) {
        j($form).addClass('succes'); j($form).removeClass('error');
        j($form).before('<div id="succes-send">'+ $config.succes.message +'</div>');
        $($formMessages).text(response);

        // Clear the form.
    j('#firstname').val('');
        j('#lastname').val('');
    j('#email').val('');
    j('#message').val('');
    }).fail(function(data) {
        j($form).addClass('error'); j($form).removeClass('succes');
        j($form).before('<div id="error-send">'+ $config.error.message +'</div>');
        $($formMessages).text(response);


    // Set the message text.
    if (data.responseText !== '') {
        $($formMessages).text(data.responseText);
    } else {
        $($formMessages).text($config.error.message);
    }

        // Clear the form.
    j('#firstname').val('');
        j('#lastname').val('');
    j('#email').val('');
    j('#message').val('');
    });
});