bootstrap模态框下拉demo

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>文档标题</title>
<link href="//cdn.staticfile.org/twitter-bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet">
<script src="//cdn.staticfile.org/jquery/1.11.3/jquery.min.js"></script>
<script src="//cdn.staticfile.org/twitter-bootstrap/3.3.5/js/bootstrap.min.js"></script>
</head>
<body>
    <!-- Large modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bs-example-modal-lg">Large modal</button>
​
<div class="modal fade bs-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
  <div class="modal-dialog modal-lg">
    <div class="modal-content">
      <select>
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
      </select>
    </div>
  </div>
</div>
​
​
</body>
</html>
HTML