菜鸟教程在线编辑器

AI 编程工具
 
                <!DOCTYPE html>
<html>
<head>
  <title>Bootstrap5 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.staticfile.net/twitter-bootstrap/5.1.1/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.staticfile.net/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>禁用下拉菜单</h2>
  <p>disabled 属性可以禁止下拉菜单被选择：</p>
  <form action="">
    <label for="sel" class="form-label">禁用下拉菜单：</label>
    <select class="form-select" id="sel" name="sellist" disabled>
      <option>1</option>
      <option>2</option>
      <option>3</option>
      <option>4</option>
      <option>5</option>
    </select>
    <button type="submit" class="btn btn-primary mt-3">Submit</button>
  </form>
</div>

</body>
</html>
              