[英]ajax login success data but not redirect to index page
我想使用Ajax成功響應來驗證登錄表單是否有效,但是如果所有商品都應重定向到索引頁面但不起作用,我不知道怎么了,請幫忙。 提前致謝..
$(document).ready(function(){
var response;
$('#submit').click(function(e){
e.preventDefault();
$('.alert-box').html('<div id="loading" style="margin: 0 auto;" >
</div>');
var action = 'ajax_validation';
var username = $('#username').val();
var password = $('#password').val();
$.ajax({
url:"do_login.php",
method:"POST",
data:{action:action, username:username, password:password},
success:function(data){
response = data;
if(response === 1){
window.location.href = "http://stackoverflow.com";
}else{
$('.alert-box').addClass("alert alert-warning");
$('.alert-box').html(response);
}
}
});
});
});
在這些ajax請求之上,這是操作頁面代碼include('includes / db.php');
if(isset($_POST["action"])){
$check_username = $_POST['username'];
$check_password = $_POST['password'];
if(empty($check_username) && empty($check_password)){
echo "Please fill all field";
}else{
$query = "SELECT * FROM user WHERE email = '{$check_username}' AND password = '{$check_password}' ";
$select_query=mysqli_query($connection,$query);
if(!$select_query){
die("QUERY FAILED".mysqli_error($select_query));
}
if(mysqli_num_rows($select_query)==0){
echo "Username or password are incorrect!";
}else{
while ($row=mysqli_fetch_assoc($select_query)) {
$_SESSION['username'] = $row['email'];
echo $row['email'];
}
}
}
}
在您的回應中,您正在回聲
echo $row['email'];
應該是:
echo 1;
您的問題是您要檢查ajax中的value是否為1:
success:function(data){
response = data;
if(response === 1){ //<- there you are checking if your echo is 1 but you are trying to echo $row['email'];
window.location.href = "http://stackoverflow.com";
}else{
$('.alert-box').addClass("alert alert-warning");
$('.alert-box').html(response);
}
}
將您的回聲從$row['email']
更改為1
我認為問題在於ajax成功中的響應檢查條件。 您正在檢查字符串(電子郵件或錯誤消息)是否相等並且類型相同(為1)。
...
dataType: 'json',
success:function(data){
response = data;
if(response === 1){
...
您可以使用帶有狀態/錯誤代碼的json響應:
...
success:function(data){
response = JSON.parse(data);
if(response.status === 1){
window.location.href = "http://stackoverflow.com";
}else{
$('.alert-box').addClass("alert alert-warning");
$('.alert-box').html(response.data);
}
}
...
$check_username = $_POST['username'];
$check_password = $_POST['password'];
$res = array('status'=> 0, 'data' => '');
if(empty($check_username) && empty($check_password)){
$res['status'] = 0;
$res['data'] = "Please fill all field";
}else{
$query = "SELECT * FROM user WHERE email = '{$check_username}' AND password = '{$check_password}' ";
$select_query=mysqli_query($connection,$query);
if(!$select_query){
$res['status'] = 0;
$res['data'] = "QUERY FAILED".mysqli_error($select_query);
echo json_encode($res);
return;
}
if(mysqli_num_rows($select_query)==0){
$res['status'] = 0;
$res['data'] = "Username or password are incorrect!";
}else{
while ($row=mysqli_fetch_assoc($select_query)) {
$_SESSION['username'] = $row['email'];
$res['status'] = 1;
$res['data'] = "".$row['email'];
}
}
}
echo json_encode($res);
另外,我建議僅在查詢條件的地方輸入用戶名,並檢查密碼是否與php匹配。
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