Question

我添加了一个使用ajax到我网站的联系表单。我从2014年3月起获得Matt West撰写的Treehouse博客文章中的代码。代码如下。

总的来说，表单效果很好，但我有两个问题无法解决。第一个似乎是次要的。在mailer.php发送邮件之后，我收到了来自＆＃34; http_response_code（200）＆＃34;说有一个不明功能。我只是通过评论http_response_code行来解决这个问题，但我不知道是否需要做些什么来使其正常运行。

另一个问题是UX问题。发送邮件后，将显示成功消息，表单中的所有字段周围都会出现红色边框。这似乎不是由CSS处理的，所以它必须在jquery中。我认为红色边框应该表示不良数据，但我不希望它们在用户成功发送消息时出现。对此的任何帮助将不胜感激。

的index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>AJAX Contact Form Demo</title>
    <link rel="stylesheet" href="css/style.css">
</head>
<body>
    <div id="page-wrapper">
      <h1>AJAX Contact Form Demo</h1>
      <div id="form-messages"></div>
        <form id="ajax-contact" method="post" action="bat/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" id="btns">
                <button type="clear">Clear</button>
                <button type="submit">Send</button>
            </div>
        </form>
    </div>
    <script src="js/jquery-2.1.0.min.js"></script>
    <script src="js/app.js"></script>
</body>
</html>

的style.css

*, *:before, *:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

html {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 100%;
  background: #333;
  -webkit-font-smoothing: antialiased;
}

#page-wrapper {
  width: 640px;
  background: #FFFFFF;
  padding: 1em;
  margin: 1em auto;
  border-top: 5px solid #69c773;
  box-shadow: 0 2px 10px rgba(0,0,0,0.8);
}

h1 {
  margin-top: 0;
}

.field {
  margin: 1em 0;
}

label {
  display: block;
  margin-top: 2em;
  margin-bottom: 0.5em;
  color: #999999;
}

input {
  width: 100%;
  padding: 0.5em 0.5em;
  font-size: 1.2em;
  border-radius: 3px;
  border: 1px solid #D9D9D9;
}

textarea {
  width: 100%;
  height: 200px;
  padding: 0.5em 0.5em;
  font-size: 1.2em;
  border-radius: 3px;
  border: 1px solid #D9D9D9;
}

#btns {
  text-align: right;
  padding-top: 2.3em;
  font-size: 0;
  line-height: 0;
}

button {
  display: inline-block;
  border-radius: 3px;
  border: none;
  font-size: 0.9rem;
  padding: 0.5rem 0.8em;
  background: #69c773;
  border-bottom: 1px solid #498b50;
  color: white;
  -webkit-font-smoothing: antialiased;
  font-weight: bold;
  margin: 0;
  width: 27%;
  text-align: center;
}



button+button {
  margin-left: 1em;
}

button:hover, button:focus {
  opacity: 0.75;
  cursor: pointer;
}

button:active {
  opacity: 1;
  box-shadow: 0 -3px 10px rgba(0, 0, 0, 0.1) inset;
}

.success {
  padding: 1em;
  margin-bottom: 0.75rem;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
  color: #468847;
  background-color: #dff0d8;
  border: 1px solid #d6e9c6;
  -webkit-border-radius: 4px;
     -moz-border-radius: 4px;
          border-radius: 4px;
}

.error {
  padding: 1em;
  margin-bottom: 0.75rem;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
  color: #b94a48;
  background-color: #f2dede;
  border: 1px solid rgba(185, 74, 72, 0.3);
  -webkit-border-radius: 4px;
     -moz-border-radius: 4px;
          border-radius: 4px;
}

的jquery-2.1.0.min.js

app.js

$(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 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.
            $('#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.');
            }
        });

    });

});

mailer.php

<?php
    // My modifications to mailer script from:
    // http://blog.teamtreehouse.com/create-ajax-contact-form
    // Added input sanitizing to prevent injection

    // Only process POST reqeusts.
    if ($_SERVER["REQUEST_METHOD"] == "POST") {
        // Get the form fields and remove whitespace.
        $name = strip_tags(trim($_POST["name"]));
                $name = str_replace(array("\r","\n"),array(" "," "),$name);
        $email = filter_var(trim($_POST["email"]), FILTER_SANITIZE_EMAIL);
        $message = trim($_POST["message"]);

        // Check that data was sent to the mailer.
        if ( empty($name) OR empty($message) OR !filter_var($email, FILTER_VALIDATE_EMAIL)) {
            // Set a 400 (bad request) response code and exit.
            //http_response_code(400);
            echo "Oops! There was a problem with your submission. Please complete the form and try again.";
            exit;
        }

        // Set the recipient email address.
        // FIXME: Update this to your desired email address.
        $recipient = "recipient@email.com";

        // Set the email subject.
        $subject = "New contact from $name";

        // Build the email content.
        $email_content = "Name: $name\n";
        $email_content .= "Email: $email\n\n";
        $email_content .= "Message:\n$message\n";

        // Build the email headers.
        $email_headers = "From: $name <$email>";

        // Send the email.
        if (mail($recipient, $subject, $email_content, $email_headers)) {
            // Set a 200 (okay) response code.
            //http_response_code(200);
            echo "Thank You! Your message has been sent.";
        } else {
            // Set a 500 (internal server error) response code.
            //http_response_code(500);
            echo "Oops! Something went wrong and we couldn't send your message.";
        }

    } else {
        // Not a POST request, set a 403 (forbidden) response code.
        //http_response_code(403);
        echo "There was a problem with your submission, please try again.";
    }

?>

Answer 1

红色边框可能正在出现，因为一旦Ajax调用完成，您将清除所有字段。由于字段具有required属性集，因此您使用的任何浏览器都使用红色边框标记它们以显示它们应该具有值。它根本不在您的CSS或JavaScript中。

您可以尝试这样的事情：

$("#name, #email, #message").removeAttr("required").val("").attr("required");

取代这个：

// Clear the form.
$('#name').val('');
$('#email').val('');
$('#message').val('');

我只看到它发生在Firefox中，这似乎阻止它发生。它会在清除值之前删除required属性，然后将其添加回来。

使用Ajax联系表单问题

1 个答案: