<!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/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.5.1.min.js"></script>
<script src="https://www.w3schools.cn/lib/bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>表单控件：单选按钮</h2>
<p>下面的表单包含三个单选按钮。 最后一个选项被禁用：</p>
<form>
<div class="radio">
<label><input type="radio" name="optradio" checked>选项 1</label>
</div>
<div class="radio">
<label><input type="radio" name="optradio">选项 2</label>
</div>
<div class="radio disabled">
<label><input type="radio" name="optradio" disabled>选项3 </label>
</div>
</form>
</div>
</body>
</html>