写一个简单的登录界面html+css3+js代码实现
时间: 2023-04-09 20:03:20 浏览: 171
好的,以下是一个简单的登录界面的 HTML、CSS3 和 JS 代码实现:
HTML 代码:
```
<!DOCTYPE html>
<html>
<head>
<title>登录界面</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div class="container">
<h1>登录</h1>
<form>
<label for="username">用户名</label>
<input type="text" id="username" name="username" required>
<label for="password">密码</label>
<input type="password" id="password" name="password" required>
<button type="submit" id="login-btn">登录</button>
</form>
</div>
<script src="script.js"></script>
</body>
</html>
```
CSS3 代码:
```
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background-color: #f2f2f2;
font-family: Arial, sans-serif;
}
.container {
width: 400px;
margin: 50px auto;
background-color: #fff;
padding: 20px;
border-radius: 5px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}
h1 {
text-align: center;
margin-bottom: 20px;
}
form {
display: flex;
flex-direction: column;
}
label {
margin-bottom: 10px;
}
input {
padding: 10px;
margin-bottom: 20px;
border: none;
border-radius: 5px;
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}
button {
padding: 10px;
background-color: #007bff;
color: #fff;
border: none;
border-radius: 5px;
box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
cursor: pointer;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #0069d9;
}
```
JS 代码:
```
const form = document.querySelector('form');
const usernameInput = document.querySelector('#username');
const passwordInput = document.querySelector('#password');
const loginBtn = document.querySelector('#login-btn');
form.addEventListener('submit', (e) => {
e.preventDefault();
const username = usernameInput.value.trim();
const password = passwordInput.value.trim();
if (username === '' || password === '') {
alert('用户名和密码不能为空!');
} else {
// 这里可以添加登录逻辑
alert(`欢迎,${username}!`);
}
});
```
希望这个简单的登录界面的代码能够帮到你!