gpt4 book ai didi

javascript - 为什么我的 javascript DOM 不起作用?

转载 作者:可可西里 更新时间:2023-10-31 23:46:38 27 4
gpt4 key购买 nike

这是我的整个页面。我不知道出了什么问题。这太令人沮丧了,因为它太简单了。

当我尝试获取输入字段的值时,它什么也没返回。即使我在 AJAX 之前发出警报,它也不会写出任何内容。我复制了一个输入 dom get 在我的下面,它是完全一样的。

怎么了?

注册.php:

<?php
if(isset($_POST["php_username"]) && isset($_POST["php_password"]) && isset($_POST["php_password2"]) && isset($_POST["php_email"])){
$error = "";
if(strlen($_POST["php_username"]) < 8){
$error = $error."Username has to be at least 8 characters.<br>";
}
if(strlen($_POST["php_password"]) < 8){
$error = $error."password has to be at least 8 characters.<br>";
}
if(strlen($_POST["php_username"]) > 16){
$error = $error."Username can't be more than 16 characters.<br>";
}
if(strlen($_POST["php_password"]) < 16){
$error = $error."Password can't be more than 16 characters.<br>";
}
if(strcmp($_POST["php_password"],$_POST["php_password2"])){
$error = $error."Password confirmation falied.<br>";
}
echo($error);

}else{
echo('
<div id="register-form">
<form>
<h2 style="text-decoration: underline; margin-bottom: 10px;">Registration</h2><br><br>
Username:<br>
<input type="text" maxlength="16" id="username" value="asd" /><br>
Password:<br>
<input type="password" maxlength="16" id="password" /><br>
Confirm password:<br>
<input type="password" maxlength="16" id="password2" /><br>
E-mail address:<br>
<input type="email" id="email" /><br><br>
<input type="button" id="registration-submit" value="Signup"><br>
<div id="registration-response">
</div>
</form>
</div>
<script>
$("#registration-submit").click(function(){
var username = document.getElementById("username").value;
var password = document.getElementById("password").value;
var password2 = document.getElementById("password2").value;
var email = document.getElementById("email").value;

$.post("registration.php",{
"php_username": username,
"php_password": password,
"php_password2": password2,
"php_email": email
},
function(data, status){
$("#registration-response").html(data);
$("#registration-response").fadeIn(750);
});

});
</script>
');
}
?>

最佳答案

只需将您的 javascript 放在 echo 语句之外,并将其包装在 $(document).ready();

        <?php
if(isset($_POST["php_username"]) && isset($_POST["php_password"]) && isset($_POST["php_password2"]) && isset($_POST["php_email"])){
$error = "";
if(strlen($_POST["php_username"]) < 8){
$error = $error."Username has to be at least 8 characters.<br>";
}
if(strlen($_POST["php_password"]) < 8){
$error = $error."password has to be at least 8 characters.<br>";
}
if(strlen($_POST["php_username"]) > 16){
$error = $error."Username can't be more than 16 characters.<br>";
}
if(strlen($_POST["php_password"]) < 16){
$error = $error."Password can't be more than 16 characters.<br>";
}
if(strcmp($_POST["php_password"],$_POST["php_password2"])){
$error = $error."Password confirmation falied.<br>";
}
echo($error);

}else{
echo('
<div id="register-form">
<form>
<h2 style="text-decoration: underline; margin-bottom: 10px;">Registration</h2><br><br>
Username:<br>
<input type="text" maxlength="16" id="username" value="asd" /><br>
Password:<br>
<input type="password" maxlength="16" id="password" /><br>
Confirm password:<br>
<input type="password" maxlength="16" id="password2" /><br>
E-mail address:<br>
<input type="email" id="email" /><br><br>
<input type="button" id="registration-submit" value="Signup"><br>
<div id="registration-response">
</div>
</form>
</div>');


<script>

$(document).ready(function(){
$("#registration-submit").click(function(){
var username = document.getElementById("username").value;
var password = document.getElementById("password").value;
var password2 = document.getElementById("password2").value;
var email = document.getElementById("email").value;

$.post("registration.php",{
"php_username": username,
"php_password": password,
"php_password2": password2,
"php_email": email
},
function(data, status){
$("#registration-response").html(data);
$("#registration-response").fadeIn(750);
});

});
});

</script>

}
?>

关于javascript - 为什么我的 javascript DOM 不起作用?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33582626/

27 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com