如何在 Javascript 中比较密码
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How to compare passwords in Javascript
提问by user2110655
I have a registration page and I want to compare two passwords (input fields) to be equal before writing it to a websql database. I cannot seem to get it to work. Any ideas?
我有一个注册页面，我想在将它写入 websql 数据库之前比较两个密码（输入字段）是否相等。我似乎无法让它工作。有任何想法吗？
function addTodo() {
var todo = document.getElementById("todo");
var todo2 = document.getElementById("todo2");
if(todo != todo2) {
alert("Yours passwords do not match");
} else {
curatio.webdb.addTodo(todo.value);
todo.value = "";
alert("Your Registration was successfull");
setTimeout(function () {
window.location.href = "login.html";
}, 1000);
}
}
<div data-role="fieldcontain" >
<label for="todo">
Password
</label>
<input name="" id="todo" placeholder="" value="" type="password" required>
</div>
<div data-role="fieldcontain" >
<label for="todo2">
Retype your Password
</label>
<input name="" id="todo2" placeholder="" value="" type="password" required>
</div>
回答by Marty
You're comparing the elements instead of their values.
您正在比较元素而不是它们的值。
var todo = document.getElementById("todo");
var todo2 = document.getElementById("todo2");
if(todo != todo2) { // Oops
todoand todo2are 2 different<input>elements.
todo并且todo2是 2 个不同的<input>元素。
Try using .value:
尝试使用.value：
if(todo.value !== todo2.value) {
回答by Cilan
You're comparing the actual elements, which will always be true(because they are both TextFields). Compair their values, like so:
您正在比较实际元素，这将始终是true（因为它们都是 TextFields）。比较它们的值，如下所示：
var todo = document.getElementById("todo").value;
var todo2 = document.getElementById("todo2").value;
Either this or change
要么这个要么改变
if(todo != todo2)
to
到
if(todo.value != todo2.value)
