<table id="we" border="1" name="we" style="width:333px; background:gray">
<tr id="tr1">
<td id="tb1" >
<input type="button" id="iptBtn" value="取值" onclick="alert(this.parentElement.parentElement.parentElement.id)" />
</td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
</table>奇怪了 啊 大家能帮忙看下吗
<tr id="tr1">
<td id="tb1" >
<input type="button" id="iptBtn" value="取值" onclick="alert(this.parentElement.parentElement.parentElement.id)" />
</td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
</table>奇怪了 啊 大家能帮忙看下吗
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title></head>
<body>
<table id="we" border="1" name="we" style="width:333px; background:gray">
<tr id="tr1">
<td id="tb1" >
<input type="button" id="iptBtn" value="取值" onclick="alert(this.parentNode.parentNode.parentNode.parentNode.id)" />
</td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
</table>
</body>
</html>
再parentNode一次就是table标签了