Javascript警报窗口重定向到另一个网页
Javascript Alert Window Redirects to Another Webpage
<?php
session_start();
include_once "connect.php";
$fullName = $_POST['fullname'];
$userName = $_POST['username'];
$emailAdd = $_POST['email'];
$passWord = $_POST['password'];
$query = mysql_query("SELECT * FROM users where USERNAME = '$username' ");
$result = mysql_fetch_array($query);
if($fullName == "")
{
?>
<script>
alert("Full Name is required!");
window.location.href = "registeruser.php";
</script>
<?php
}
else
{
if ($userName == "")
{
?>
<script>
alert("Invalid username!");
window.location.href = "registeruser.php";
</script>
<?php
}
else
{
if($userName == $result['USERNAME'])
{
?>
<script>
alert("Username already exists!");
window.location.href = "registeruser.php";
</script>
<?php
}
else
{
if ($emailAdd == $result['EMAIL'])
{
?>
<script>
alert("Email address is required!");
window.location.href = "registeruser.php";
</script>
<?php
}
else
{
if ($passWord == "")
{
?>
<script>
alert("Username is required!");
window.location.href = "registeruser.php";
</script>
<?php
}
else
{
if($_POST['password']==$_POST['confirmpass'])
{
mysql_query("INSERT INTO users (FULLNAME, USERNAME, EMAIL, PASSWORD)
VALUES ('$fullName', '$userName', '$emailAdd', '$passWord')" );
mysql_close();
?>
<script>
alert("Registered Successfully!");
window.location.href = "index.php";
</script>
<?php
}
else
{
?>
<script>
alert("Password and Confirm Password do not match");
window.location.href = "registeruser.php";
</script>
<?php
}
}
}
}
}
}
?>
很好。但问题是:警报窗口显示到另一个网页，而不是在网页这是可以的，但它看起来很糟糕，直接用户到另一个网页没有内容在那里。如果你能帮助我请如何解决这个问题，使javascript警报窗口只显示在同一网页上。事实上，我已经尝试了一些这样的解决方案。
if($fullName == "")
{
echo '<script>';
echo 'alert("Full Name is required!")';
echo 'window.location.href = "registeruser.php"';
echo '</script>';
}
您好，您是否尝试使用ajax与jquery
现在是你的脚本只是返回一个json对象说，如果一切正常//reg.php
session_start();
header('Content-type: application/json');
include_once "connect.php";
// result we return to the user
$response = ['error' => false, 'message' => ''];
$fullName = $_POST['fullname'];
$userName = $_POST['username'];
$emailAdd = $_POST['email'];
$passWord = $_POST['password'];
$query = mysql_query("SELECT * FROM users where USERNAME = '$username' ");
$result = mysql_fetch_array($query);
if($fullName == "") {
$response['message'] = 'Full Name is required!';
$response['error'] = true;
} else {
if ($userName == "") {
$response['message'] = 'Invalid username!';
$response['error'] = true;
} else {
if($userName == $result['USERNAME']) {
$response['message'] = 'Username already exists!';
$response['error'] = true;
} else {
if ($emailAdd == $result['EMAIL']) {
$response['message'] = 'Email address is required!';
$response['error'] = true;
} else {
if ($passWord == "") {
$response['message'] = 'Username is required!';
$response['error'] = true;
} else {
if($_POST['password']==$_POST['confirmpass']) {
mysql_query("INSERT INTO users (FULLNAME, USERNAME, EMAIL, PASSWORD) VALUES ('$fullName', '$userName', '$emailAdd', '$passWord')" );
mysql_close();
$response['message'] = 'OK';
$response['error'] = false;
} else {
$response['message'] = 'Password and Confirm Password do not match';
$response['error'] = true;
}
}
}
}
}
}
die(json_encode($response));
和//registration.php
<form method=POST action="reg.php" id="myForm">
<!--input goes here-->
</form>
<script src="//path to jquery"></script>
<script>
$(document).ready(() => {
$('#myForm').on('submit', function (e) {
e.preventDefault();
$.post('reg.php', $(this).serialize())
.done((datas) => {
if(datas.erreur) {
alert(datas.message);
} else {
alert('registration succesfully');
}
}).fail(() => {
alert('connect error !!!');
});
});
});
</script>
使用基础url，然后将您的自定义路径粘贴到您的页面，如:
<?php
if($fullName == "")
{
?>
<script>
var MyBaseURL = <?php echo BASE_URL_CONSTANT?>
var customURL = MyBaseURL."/registeruser.php";
alert("Full Name is required!");
window.location.href = customURL;
</script>
<?php
}
?>
和你应该避免回显脚本，使用常规的脚本块带php标签。
也许尝试在session_start()之后呈现一些html。例如
<html>
<head>
</head>
<body>
<h1>Login Message</h1>
</body>
</html>
应该为消息提供要显示的页面。不过，在我看来，更好的做法是:完全不要跳出php，使用php header()函数将您带到所需的适当页面。
试着这样使用:
if($fullName == "")
{
echo "<script language='javascript'>alert('Full Name is required!')</script>";
echo "<script language='javascript'>window.location.replace('page.php?id=".$crmId."'); </script>";
}
正如其他人所说，您需要将逻辑移到HTML的末尾。其次，您需要在希望加载的页面上实现此逻辑，而不是在重定向的页面上。这是一个两步逻辑。例如:
你需要实现window。当前脚本的位置
然后，在你希望用户被重定向的页面标签前:
<?php
if($fullName == "")
{
echo '<script>';
echo 'alert("Full Name is required!")';
echo '</script>';
}
?>
</body>
所以，这样做，在页面加载后，它会正确提示
您应该将警告放在registeruser.php页面上。让PHP脚本这样做:
header("Location: registeruser.php?message=" . urlencode("Invalid username"));
那么registeruser.php可以做:
<?php
if (isset($_GET['message'])) {
?>
<script>
alert(<?php echo json_encode($_GET['message']); ?>);
</script>
<?php
}
您的位置href语法错误。应该是这样的:
if($fullName == "")
{
echo '<script>';
echo 'alert("Full Name is required!")';
echo 'window.location.href = SITE_URL."registeruser.php"';
echo '</script>';
}
这里SITE_URL是你的项目根路径，如http://localhost/yourproject/
此脚本将在同一页面上执行，但您必须使用这样的形式
<form method=POST action="">
<!--input goes here-->
</form>
<?php
session_start();
include_once "connect.php";
if(isset($_POST[submit])){
$fullName = $_POST['fullname'];
$userName = $_POST['username'];
$emailAdd = $_POST['email'];
$passWord = $_POST['password'];
$query = mysql_query("SELECT * FROM users where USERNAME = '$username' ");
$result = mysql_fetch_array($query);
if($fullName == "")
{
echo ' <script>
alert("Full Name is required!");
window.location.href = "registeruser.php";
</script>';
}
else
{
if ($userName == "")
{
echo ' <script>
alert("Invalid username!");
window.location.href = "registeruser.php";
</script>';
}
else
{
if($userName == $result['USERNAME'])
{
echo ' <script>
alert("Username already exists!");
window.location.href = "registeruser.php";
</script>';
}
else
{
if ($emailAdd == $result['EMAIL'])
{
echo '<script>
alert("Email address is required!");
window.location.href = "registeruser.php";
</script>';
}
else
{
if ($passWord == "")
{
echo ' <script>
alert("Username is required!");
window.location.href = "registeruser.php";
</script>';
}
else
{
if($_POST['password']==$_POST['confirmpass'])
{
mysql_query("INSERT INTO users (FULLNAME, USERNAME, EMAIL, PASSWORD)
VALUES ('$fullName', '$userName', '$emailAdd', '$passWord')" );
mysql_close();
echo ' <script>
alert("Registered Successfully!");
window.location.href = "index.php";
</script>';
}
else
{
echo ' <script>
alert("Password and Confirm Password do not match");
window.location.href = "registeruser.php";
</script>';
}
}
}
}
}
}
}
?>
或者你可以像这样使用 registration.php
<?php
if(isset($_GET[fname]) && $_GET[fname]==1)
echo ' <script>
alert("Full Name is required!");
</script>';
if(isset($_GET[uname]) && $_GET[uname]==1 )
echo ' <script>
alert("Invalid username!");
</script>';
if(isset($_GET[uname]) && $_GET[uname]==2 )
echo ' <script>
alert("Username already exists!");
</script>';
if(isset($_GET[pwrd]) && $_GET[pwrd]==2 )
echo ' <script>alert("Password and Confirm Password do not match");
</script>';
if(isset($_GET[pwrd]) && $_GET[pwrd]==1 )
echo ' <script>alert("Password is invalid");
</script>';
if(isset($_GET[mail]) && $_GET[mail]==1 )
echo ' <script>alert("invalid mailid");
</script>';
?>
<form method=POST action="reg.php">
<!--input goes here-->
</form>
reg.php
<?php
session_start();
include_once "connect.php";
if(isset($_POST[submit])){
$fullName = $_POST['fullname'];
$userName = $_POST['username'];
$emailAdd = $_POST['email'];
$passWord = $_POST['password'];
$query = mysql_query("SELECT * FROM users where USERNAME = '$username' ");
$result = mysql_fetch_array($query);
if($fullName == "")
{
header('Location:registration.php?fname=1');
}
else
{
if ($userName == "")
{
header('Location:registration.php?uname=1');
}
else
{
if($userName == $result['USERNAME'])
{
header('Location:registration.php?uname=2');
}
else
{
if ($emailAdd == $result['EMAIL'])
{
header('Location:registration.php?mail=1');
}
else
{
if ($passWord == "")
{
header('Location:registration.php?pwrd=1');
}
else
{
if($_POST['password']==$_POST['confirmpass'])
{
mysql_query("INSERT INTO users (FULLNAME, USERNAME, EMAIL, PASSWORD)
VALUES ('$fullName', '$userName', '$emailAdd', '$passWord')" );
mysql_close();
echo ' <script>
alert("Registered Successfully!");
window.location.href = "index.php";
</script>';
}
else
{
header('Location:registration.php?pwrd=2');
}
}
}
}
}
}
}
?>
可以使用以下代码
<?php
session_start();
include_once "connect.php";
$fullName = $_POST['fullname'];
$userName = $_POST['username'];
$emailAdd = $_POST['email'];
$passWord = $_POST['password'];
$query = mysql_query("SELECT * FROM users where USERNAME = '$username' ");
$result = mysql_fetch_array($query);
if($fullName == "")
{
?>
<script>
if(alert("Full Name is required!"))
{
window.location.href = "registeruser.php";
}
</script>
<?php
}
else
{
if ($userName == "")
{
?>
<script>
if(alert("Invalid username!"))
{
window.location.href = "registeruser.php";
}
</script>
<?php
}
else
{
if($userName == $result['USERNAME'])
{
?>
<script>
if(alert("Username already exists!"))
{
window.location.href = "registeruser.php";
}
</script>
<?php
}
else
{
if ($emailAdd == $result['EMAIL'])
{
?>
<script>
if(alert("Email address is required!"))
{
window.location.href = "registeruser.php";
}
</script>
<?php
}
else
{
if ($passWord == "")
{
?>
<script>
if(alert("Username is required!"))
{
window.location.href = "registeruser.php";
}
</script>
<?php
}
else
{
if($_POST['password']==$_POST['confirmpass'])
{
mysql_query("INSERT INTO users (FULLNAME, USERNAME, EMAIL, PASSWORD)
VALUES ('$fullName', '$userName', '$emailAdd', '$passWord')" );
mysql_close();
?>
<script>
if(alert("Registered Successfully!"))
{
window.location.href = "index.php";
}
</script>
<?php
}
else
{
?>
<script>
if(alert("Password and Confirm Password do not match"))
{
window.location.href = "registeruser.php";
}
</script>
<?php
}
}
}
}
}
}
?>
此代码在用户单击ok按钮时重定向页面。提示按摩显示前页面重定向
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