预选中拨动开关 - JQuery UI中文在线手册

<!DOCTYPE HTML>
<html>
<head>
<link rel="stylesheet" href="Http://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.CSS">
<script src="//apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="//apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.js"></script>
</head>
<body>

<div data-role="page">
  <div data-role="content">
    <form method="post" action="demoform.asp">
      <div data-role="fieldcontain">
        <label for="switch">切换开关：</label>
        <select name="switch" id="switch" data-role="slider">
          <option value="on">On</option>
          <option value="off" selected>Off</option>
        </select>
      </div>
      <input type="submit" data-inline="true" value="提交">
    </form>
  </div>
</div>

</body>
</html>