​x
 
<!DOCTYPE html>
<html>
<head>
<style>
table, td {
  border: 1px solid black;
}
</style>
</head>
<body>
​
<p>单击按钮可为表创建和删除行。</p>
​
<table id="myTable">
  <tr>
    <td>行1 单元格1</td>
    <td>行1 单元格2</td>
  </tr>
  <tr>
    <td>行2 单元格1</td>
    <td>行2 单元格2</td>
  </tr>
  <tr>
    <td>行3 单元格1</td>
    <td>行3 单元格2</td>
  </tr>
</table>
<br>
​
<button onclick="myCreateFunction()">创建行</button>
<button onclick="myDeleteFunction()">删除行</button>
​
<script>
function myCreateFunction() {
  var table = document.getElementById("myTable");
  var row = table.insertRow(0);
  var cell1 = row.insertCell(0);
  var cell2 = row.insertCell(1);
  cell1.innerHTML = "新单元格1";
  cell2.innerHTML = "新单元格2";
}
​
function myDeleteFunction() {
  document.getElementById("myTable").deleteRow(0);
}
</script>
​
</body>
</html>
​