显示第二行表头 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function displayResult() {
      var table = document.getElementById("myTable");
      for (var i = 0; i < table.rows[1].cells.length; i++) {
        alert(table.rows[1].cells[i].headers);
      }
    }
  </script>
</head>
<body>

  <table id="myTable" border="1" width="100%">
    <tr>
      <th id="name">名称</th>
      <th id="email">Email</th>
      <th id="phone">电话</th>
      <th id="addr">地址</th>
    </tr>
    <tr>
      <td headers="name">John Doe</td>
      <td headers="email">someone@example.com</td>
      <td headers="phone">+45342323</td>
      <td headers="addr">Rosevn 56,4300 Sandnes,Norway</td>
    </tr>
  </table>
  <br>
  <button type="button" onclick="displayResult()">获取第二行的单元格表头</button>

</body>
</html>
        