在php中单击提交按钮时提交选择框值

下面是表单代码

<form id="ajax-contact" method="post" action="mailer.php">
            <div class="field">
                <label for="name">Name:</label>
                <input type="text" id="name" name="name" required>
            </div>
            <div class="field">
                <label for="email">Email:</label>
                <input type="email" id="email" name="email" required>
            </div>
            <div class="field">
                <label for="message">Message:</label>
                <textarea id="message" name="message" required></textarea>
            </div>
<div class="field">
                <label for="Select">Select</label>
                <select id="Select" name="Selct" required>
                <option value="1">bad</option>
                <option value="2">good</option>
                <option value="3">excellent</option>
                <option value="4">Gorgrous</option>
                </select>
            </div>
            <div class="field">
                <button type="submit">Send</button>
            </div>
        </form>

ajax调用脚本

$(function() {
    // Get the form.
    var form = $('#ajax-contact');
    // Get the messages div.
    var formMessages = $('#form-messages');
    // Set up an event listener for the contact form.
    $(form).submit(function(e) {
        // Stop the browser from submitting the form.
        e.preventDefault();
        // Serialize the form data.
var name=$('#name').val();
var email=$('#email').val();
            var message=$('#message').val();
var message=$('#select').val();
        var formData = $(form).serialize();
        alert(formData);
        $.ajax({
            type: 'POST',
            url: $(form).attr('action'),
            data: formData,name,email,message,select
        })
        .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.
            $('#name').val('');
            $('#email').val('');
            $('#message').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.');
            }
        });
    });
});

我试图提交表单条目点击提交按钮，在表单中我提交的名称，电子邮件，消息和评级值，我能够通过名称，电子邮件，消息与ajax调用，但选择框值没有通过。我不知道它到底是如何通过的，请检查代码中有什么问题。请帮忙改正