​x
 
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
  border: 1px solid black;
}
</style>
</head>
<body>
​
<h1>演示如何访问 TR 元素</h1>
​
<table>
  <tr id="myRow">
    <td>First cell</td>
    <td>Second cell</td>
    <td>Third cell</td>
  </tr>
</table>
​
<p>单击此按钮可从表格行中删除第一个单元格。</p>
​
<button onclick="myFunction()">试一试</button>
​
<script>
function myFunction() {
  var row = document.getElementById("myRow");
  row.deleteCell(0);
}
</script>
​
</body>
</html>
​