HTML+CSS+JS用户管理（可储存用户数据）

使用cookies记录账号密码信息，可以注册、登录、注销账号。 点赞❤️收藏⭐️关注😍

效果图源代码在效果图后面

源代码

HTML

<!DOCTYPE html>

<head>

<title>注册登录系统</title>

</head>

<body>

</select>

<button id="toggle-btn">切换到注册</button>

<button id="logout-toggle-btn">切换到注销</button>

</div>

</body>

</html>

JavaScript script.js

document.addEventListener('DOMContentLoaded', () => {

const formTitle = document.getElementById('form-title');

const usernameInput = document.getElementById('username');

const passwordInput = document.getElementById('password');

const typeSelect = document.getElementById('type');

const toggleBtn = document.getElementById('toggle-btn');

const submitBtn = document.getElementById('submit-btn');

const logoutToggleBtn = document.getElementById('logout-toggle-btn');

let mode = 'login'; // 可为 'login', 'register', 'logout'

toggleBtn.addEventListener('click', () => {

if (mode === 'login') {

mode = 'register';

updateForm();

} else if (mode === 'register') {

mode = 'login';

updateForm();

}

});

logoutToggleBtn.addEventListener('click', () => {

mode = 'logout';

updateForm();

});

submitBtn.addEventListener('click', () => {

const username = usernameInput.value.trim();

const password = passwordInput.value.trim();

const type = typeSelect.value;

if (username === '' || (mode !== 'logout' && password === '')) {

alert('请填写所有字段');

return;

}

if (mode === 'login') {

} else if (mode === 'register') {

} else if (mode === 'logout') {

logout(username);

}

});

function updateForm() {

if (mode === 'login') {

formTitle.textContent = '登录';

submitBtn.textContent = '登录';

toggleBtn.textContent = '切换到注册';

logoutToggleBtn.textContent = '切换到注销';

typeSelect.style.display = 'none';

passwordInput.style.display = 'block';

} else if (mode === 'register') {

formTitle.textContent = '注册';

submitBtn.textContent = '注册';

toggleBtn.textContent = '切换到登录';

logoutToggleBtn.textContent = '切换到注销';

typeSelect.style.display = 'block';

passwordInput.style.display = 'block';

} else if (mode === 'logout') {

formTitle.textContent = '注销';

submitBtn.textContent = '注销';

toggleBtn.textContent = '切换到登录';

logoutToggleBtn.textContent = '切换到登录';

typeSelect.style.display = 'none';

passwordInput.style.display = 'none';

}

function getCookie(name) {

const value = `; ${document.cookie}`;

const parts = value.split(`; ${name}=`);

if (parts.length === 2) return parts.pop().split(';').shift();

}

function setCookie(name, value, days) {

let expires = '';

if (days) {

const date = new Date();

date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));

expires = `; expires=${date.toUTCString()}`;

}

document.cookie = `${name}=${value || ''}${expires}; path=/`;

}

function deleteCookie(name) {

document.cookie = `${name}=; Max-Age=-99999999;`;

}

function register(username, password, type) {

if (getCookie(username)) {

alert('该账号已被注册');

return;

}

const userData = JSON.stringify({ username, password, type });

setCookie(username, userData, 7);

alert('注册成功！请登录。');

toggleBtn.click(); // 自动切换到登录

}

function login(username, password) {

const userData = getCookie(username);

if (!userData) {

alert('账号不存在');

return;

}

const user = JSON.parse(userData);

if (user.password === password) {

window.location.href = `ruso.html?username=${username}`;

} else {

alert('密码错误');

}

function logout(username) {

const userData = getCookie(username);

if (!userData) {

alert('账号不存在');

return;

}

deleteCookie(username);

alert('账号已注销');

toggleBtn.click(); // 自动切换到登录

}

});

CSS styles.css

body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-color: #f2f2f2;
margin: 0;
font-family: Arial, sans-serif;
}

.container {
display: flex;
justify-content: center;
align-items: center;
width: 100%;
}

#form-container {
background-color: #fff;
padding: 20px;
border-radius: 10px;
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
width: 300px;
text-align: center;
}

#form-title {
margin-bottom: 20px;
color: #e74c3c;
}

input, select {
width: 100%;
padding: 10px;
margin: 10px 0;
border: 1px solid #ccc;
border-radius: 5px;
}

button {
width: 100%;
padding: 10px;
margin-top: 10px;
border: none;
border-radius: 5px;
cursor: pointer;
}

#toggle-btn, #logout-toggle-btn {
background-color: #3498db;
color: white;
}

#submit-btn {
background-color: #e74c3c;
color: white;
}

button:hover {
opacity: 0.9;
}

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