[英]Data send to ajax by php are undefined after ajax success call
我在顯示表單的響應警報時遇到了一些問題。
$(function () {
// when the form is submitted
$('#contact-form').on('submit', function (e) {
// if the validator does not prevent form submit
if (!e.isDefaultPrevented()) {
var url = "contact.php";
// POST values in the background the the script URL
$.ajax({
type: "POST",
url: url,
data: $(this).serialize(),
success: function (data)
{
// we recieve the type of the message: success x danger and apply it to the
var messageAlert = 'alert-' + data.type;
var messageText = data.message;
// let's compose Bootstrap alert box HTML
var alertBox = '<div class="alert ' + messageAlert + ' alert-dismissable"><button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>' + messageText + '</div>';
// If we have messageAlert and messageText
if (messageAlert && messageText) {
// inject the alert to .messages div in our form
$('#contact-form').find('.messages').html(alertBox);
// empty the form
$('#contact-form')[0].reset();
// }
}
});
return false;
}
})
});
php文件看起來像這樣
try
{
if(count($_POST) == 0) throw new \Exception('Form is empty');
$emailText = "You have a new message from your contact form\n=============================\n";
foreach ($_POST as $key => $value) {
// If the field exists in the $fields array, include it in the email
if (isset($fields[$key])) {
$emailText .= "$fields[$key]: $value\n";
}
}
// All the neccessary headers for the email.
$headers = array('Content-Type: text/plain; charset="UTF-8";',
'From: ' . $from,
'Reply-To: ' . $from,
'Return-Path: ' . $from,
);
// Send email
mail($sendTo, $subject, $emailText, implode("\n", $headers));
$responseArray = array('type' => 'success', 'message' => $okMessage);
}
catch (\Exception $e)
{
$responseArray = array('type' => 'danger', 'message' => $errorMessage);
}
事實是,如果(messageAlert && messageText)永遠都不為TRUE,因為那時變量未定義。 盡管電子郵件發送成功,並且js文件中的console.log(data)會打印所需的數據。
您能幫我解決問題嗎?
您發送電子郵件,創建響應數組,但沒有將其傳遞給ajax調用。 responseArray的回顯在哪里? 我建議您最好的方法是將其作為json數據傳遞:
echo json_encode($responseArray);
然后閱讀javascript函數
var json = $.parseJSON(data);
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