表单消息警报

HTML代码——

<p style="display:none">Mail Send Successfully </p>
<form method="post" action="contactus.php" name="myForm" autocomplete="off">
            <label for="Name">Name:</label>
            <input type="text" name="Name" id="Name" maxlength="60" required/>
            <label for="email">Email:</label>
            <input type="text" name="email" id="email" maxlength="120" required/>
            <label for="message">Message:</label><br />
            <textarea name="message" rows="20" cols="20" id="message" required></textarea>
            <input id="submit-btn" type="submit" name="submit" value="Submit" class="submit-button" />
        </form>

AJAX代码——

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
        <script type="text/javascript">
        $(document).ready(function(){
            $('#submit-btn').click(function(){
                var name = $('#name').val();
                var email = $('#email').val();
                var message = $('#message').val();
                $.ajax({
                type: "POST",
                url: "form-submit.php", // in this file we will put the code of send email and also we will return a response
                data:"name="+name+"&email="+email+"&message="+message,
                success: function(response) // we will get response
                    {
                        $('p').show(); // here message will show after send email
                    }
              }); 
        });
        });
        </script>

如果发送邮件的PHP在同一页上，我假设有这样的结构：

<?php
if (isset($_POST['email']) && strlen($_POST['email') {
    mail("name@example.com", "subject", "text");
}
?>

我建议你在那里添加一个变量，像这样：

<?php
if (isset($_POST['email']) && strlen($_POST['email') {
    mail("name@example.com", "subject", "text");
    $sent_mail = true; // so we know later
}
?>

然后在页面的某个地方，这样做：

<?php
if (isset($sent_mail)) {
    echo 'Success!';
}
?>

不需要javascript：(