通过点击按钮缩进列表项标记 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function displayResult() {
      document.getElementById("ul1").style.listStylePosition = "inside";
    }
  </script>
</head>
<body>

  <ul id="ul1">
    <li>Coffee</li>
    <li>Tea</li>
    <li>Water</li>
    <li>Soda</li>
  </ul>
  <br>
  <button type="button" onclick="displayResult()">缩进列表项的标记</button>

</body>
</html>
        