添加行 - 在线编辑器

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function insCell() {
      var x = document.getElementById('tr1').insertCell(0);
      x.innerHTML = "The famous";
    }
  </script>
</head>
<body>

  <table border="1">
    <tr id="tr1">
      <td>Peter</td>
      <td>Griffin</td>
    </tr>
  </table>
  <br>
  <input type="button" onclick="insCell()" value="插入单元格">

</body>
</html>
​x
 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function insCell() {
      var x = document.getElementById('tr1').insertCell(0);
      x.innerHTML = "The famous";
    }
  </script>
</head>
<body>
​
  <table border="1">
    <tr id="tr1">
      <td>Peter</td>
      <td>Griffin</td>
    </tr>
  </table>
  <br>
  <input type="button" onclick="insCell()" value="插入单元格">
​
</body>
</html>