$(function() {
    // Get the form.
    var form = $('#contact-form');
    // Get the messages div.
    var formMessages = $('.form-messege');
    // Set up an event listener for the contact form.
    $(form).submit(function(e) {
        // Stop the browser from submitting the form.
        e.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) {
                // Make sure that the formMessages div has the 'success' class.
                $(formMessages).removeClass('error');
                $(formMessages).addClass('success');

                // Set the message text.
                $(formMessages).text(response);

                // Clear the form.
                $('#contact-form input,#contact-form textarea').val('');
            })
            .fail(function(data) {
                // Make sure that the formMessages div has the 'error' class.
                $(formMessages).removeClass('success');
                $(formMessages).addClass('error');

                // Set the message text.
                if (data.responseText !== '') {
                    $(formMessages).text(data.responseText);
                } else {
                    $(formMessages).text(
                        'Oops! An error occured and your message could not be sent.'
                    );
                }
            });
    });
});