弹出表格的摘要 - 在线编辑器

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

  <table id="myTable" border="1" summary="例如表中的员工">
    <tr>
      <th>Firstname</th>
      <th>Lastname</th>
    </tr>
    <tr>
      <td>Peter</td>
      <td>Griffin</td>
    </tr>
    <tr>
      <td>John</td>
      <td>Doe</td>
    </tr>
  </table>
  <br>
  <button type="button" onclick="displayResult()">显示表格描述</button>

</body>
</html>
        