<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap 示例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.cn/lib/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.5.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://www.w3schools.cn/lib/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>表单控件：复选框</h2>
<p>下面的表单包含三个复选框。 默认选中第一个选项，禁用最后一个选项：</p>
<form action="/action_page.php">
<div class="form-check">
<label class="form-check-label" for="check1">
<input type="checkbox" class="form-check-input" id="check1" name="option1" value="something" checked>选项 1
</label>
</div>
<div class="form-check">
<label class="form-check-label" for="check2">
<input type="checkbox" class="form-check-input" id="check2" name="option2" value="something">选项 2
</label>
</div>
<div class="form-check">
<label class="form-check-label">
<input type="checkbox" class="form-check-input" disabled>选项 3
</label>
</div>
<button type="submit" class="btn btn-primary">提交</button>
</form>
</div>
</body>
</html>