<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="jQueryNote/jquery-1.8.2.js" type="text/javascript"></script>
<script type="text/javascript">
// $(document).ready(function () {
// $("#tbl tr :lt(3)").css('font-size','30px') ;
// });
$(function () {
$('#tbl tr :lt(3)').css('font-size', '20px');
//偶数行样式设置.
$('tr :even').css('backgroundColor', 'red').siblings('tr').css('','');
});
</script>
</head>
<body>
<table id="tbl" border="1" cellpadding="0" cellspacing="0">
<tr>
<td> 姓名</td>
<td> 成绩</td>
</tr>
<tr>
<td> 曦曦</td>
<td> 90</td>
</tr>
<tr>
<td>东东 </td>
<td> 89</td>
</tr>
<tr>
<td> 平均分</td>
<td> 89.5</td>
</tr>
</table>
</body>
</html>