我有一个时事通讯注册表单,我很高兴。我在下面有这个 jQuery 脚本:
$(document).ready(function(){
$('#newsletter-signup').submit(function(){
//setup variables
var form = $(this),
formData = form.serialize(),
formUrl = form.attr('action'),
formMethod = form.attr('method'),
responseMsg = $('#signup-response');
//show response message - waiting
responseMsg.hide()
.addClass('response-waiting')
.text('Please Wait...')
.fadeIn(200);
//send data to server for validation
$.ajax({
url: formUrl,
type: formMethod,
data: formData,
success:function(data){
//setup variables
var responseData = jQuery.parseJSON(data),
klass = '';
//response conditional
switch(responseData.status){
case 'error':
klass = 'response-error';
break;
case 'success':
klass = 'response-success';
break;
}
//show reponse message
responseMsg.fadeOut(200,function(){
$(this).removeClass('response-waiting')
.addClass(klass)
.text(responseData.message)
.fadeIn(200,function(){
//set timeout to hide response message
setTimeout(function(){
responseMsg.fadeOut(200,function(){
$(this).removeClass(klass);
});
},3000);
});
});
}
});
//prevent form from submitting
return false;
});
});
如果您有兴趣,这里是我的 PHP 的一个片段(删除了数据库凭据):
<?php
if(isset($_GET['action'])&& $_GET['action'] == "signup"){
mysql_connect(***REMOVEDforprivacy*******);
mysql_select_db(***REMOVEDforprivacy*******);
//sanitize data
$email = mysql_real_escape_string($_POST['signup-email']);
$to ='***REMOVEDforprivacy*******';
$subject = '***REMOVEDforprivacy*******';
$body = "The email address ". $email. " has been added to the email database.";
$headers = 'From: ***REMOVEDforprivacy*******' . "\r\n" .
'Reply-To: ***REMOVEDforprivacy*******' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
//validate email address - check if input was empty
if(empty($email)){
$status = "error";
$message = "You did not enter an email address!";
}
else if(!filter_var($email, FILTER_VALIDATE_EMAIL)){ //validate email address - check if is a valid email address
$status = "error";
$message = "You have entered an invalid email address!";
}
else {
$existingSignup = mysql_query("SELECT * FROM signups WHERE email_address='$email'");
if(mysql_num_rows($existingSignup) < 1){
$insertSignup = mysql_query("INSERT INTO signups (email_address) VALUES ('$email')");
if($insertSignup){
$status = "success";
$message = "You have been signed up!";
mail($to, $subject, $body, $headers);
}
else {
$status = "error";
$message = "Oops, There has been a technical error!";
}
}
else {
$status = "error";
$message = "Looks like you have already registered this email address with us. Thank you for your support!";
}
}
//return json response
$data = array(
'status' => $status,
'message' => $message
);
echo json_encode($data);
exit;
}
?>
一切顺利,直到这里:
//show reponse message
responseMsg.fadeOut(200,function(){
$(this).removeClass('response-waiting')
.addClass(klass)
.text(responseData.message)
.fadeIn(200,function(){
//set timeout to hide response message
setTimeout(function(){
responseMsg.fadeOut(200,function(){
$(this).removeClass(klass);
});
},3000);
});
});
我不明白这里有什么问题。但是,当我尝试删除大部分语法并仅使用时,语法似乎很好responseMsg.fadeOut(200);
responseMsg 不会褪色(因此您可以忘记它删除类并添加新类)。我已经用 Firebug 对此进行了检查,并且 POST 响应确实显示了正确的错误并且正在返回成功消息......(并且确实检查了我的数据库,添加了条目并发送了一封警报电子邮件)......所以除了花哨的 schnazzy JQuery 效果外,一切都在工作。我短暂地认为我与页面上的另一个元素发生了 JQuery 冲突,所以我删除了它,并且没有任何变化。我尝试使用 $.noconflict()、$.noconflict(true),并用 JQuery 替换所有 $ 实例(但是,页面上的其他项目无论如何都不冲突)。我尝试删除添加“响应等待”类的调用,并在数据的 JSON 解析后添加响应消息类,但这不起作用。这个很棒的教程,所以我不知道为什么它不起作用。有人有线索吗?
更新
这里的 FWIW 是一个JSFiddle,尽管如果没有 PHP DB 的东西它绝对无法工作......不知道我该如何解决这个问题,伙计们......
更新 让它工作,将我的 PHP 代码放在我的 html 标题上方的愚蠢错误......一旦我被允许,将作为答案发布。