代码如下：
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8"/>
<title> table test</title>
</head>
<body>
<table id="test" border="1px">
<tr>
<th>fisrt name</th>
<th>last name</th>
</tr>
<tr>
<td>Burning</td>
<td>Teng</td>
</tr>
<tr>
<td>Zhou</td>
<td>Yi</td>
</tr>
<tr>
<td><input type="button" onclick="test(this)"></td>
<td>alert()</td>
</tr>
</table>
<script>
function test(ele)//注意这里this的使用
{
var eleTable = document.getElementById("test");
var eleTr = eleTable.getElementsByTagName("tr");
var firstRow = eleTr[1];
alert(firstRow == ele.parentNode.parentNode);
//alert(ele.parentNode.parentNode);
alert(ele);
}
</script>
<body>
</html>
