改变表格单元格的内容 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function changeContent() {
      var x = document.getElementById('myTable').rows[0].cells;
      x[0].innerHTML = "新内容";
    }
  </script>
</head>
<body>

  <table id="myTable" border="1">
    <tr>
      <td>行1 列1</td>
      <td>行1 列2</td>
    </tr>
    <tr>
      <td>行2 列1</td>
      <td>行2 列2</td>
    </tr>
    <tr>
      <td>行3 列1</td>
      <td>行3 列2</td>
    </tr>
  </table>
  <form>
    <input type="button" onclick="changeContent()" value="修改内容">
  </form>

</body>
</html>
        