<table id="tb1">
<tr>
<td id="td0">a</td>
<td id="Td1">b</td>
<td id="Td2">c</td>
<td id="Td3">d</td>
<td id="Td4">e</td>
<td id="Td5">f</td>
</tr>
<tr>
<td id="td6">a1</td>
<td id="Td7">b1</td>
<td id="Td8">c1</td>
<td id="Td9">d1</td>
<td id="Td10">e1</td>
<td id="Td11">f1</td>
</tr>
</table>
我要选中所有<tr>下的第一个<td>应该怎么写?
<tr>
<td id="td0">a</td>
<td id="Td1">b</td>
<td id="Td2">c</td>
<td id="Td3">d</td>
<td id="Td4">e</td>
<td id="Td5">f</td>
</tr>
<tr>
<td id="td6">a1</td>
<td id="Td7">b1</td>
<td id="Td8">c1</td>
<td id="Td9">d1</td>
<td id="Td10">e1</td>
<td id="Td11">f1</td>
</tr>
</table>
我要选中所有<tr>下的第一个<td>应该怎么写?
来个笨方法吧<!doctype html>
<html>
<head>
<meta charset="utf-8" />
</head>
<body>
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<table id="tb1">
<tr>
<td id="td0">a</td>
<td id="Td1">b</td>
<td id="Td2">c</td>
<td id="Td3">d</td>
<td id="Td4">e</td>
<td id="Td5">f</td>
</tr>
<tr>
<td id="td6">a1</td>
<td id="Td7">b1</td>
<td id="Td8">c1</td>
<td id="Td9">d1</td>
<td id="Td10">e1</td>
<td id="Td11">f1</td>
</tr>
</table>
<script type="text/javascript">
$("#tb1 tr").each(function(index,element){
alert($(element).find("td:first").html());
});
</script>
</body>
</html>
都不记得有first-child了
如果是获取任意一个,nth-child这个完全能满足你的需求啊
http://www.ostools.net/apidocs/apidoc?api=jquery