<body>
<table style="width: 200px;">
<tr>
<td>姓名</td>
<td>分數</td>
</tr>
<tr>
<td>小明</td>
<td>100</td>
</tr>
<tr>
<td>小張</td>
<td>99</td>
</tr>
<tr>
<td>小方</td>
<td>98</td>
</tr>
<tr>
<td>小圓</td>
<td>97</td>
</tr>
<tr>
<td>小壯</td>
<td>96</td>
</tr>
<tr>
<td>小張</td>
<td>95</td>
</tr>
</table>
</body>
首先我們要明確，gt，lt計數都是下標從0開始，而且不論大小小於，都不包括它自己本身。
①$("tr:lt(3)").css("backgroundColor", "yellow");
姓名,小明,小張(0,1,2)三行黃
②$("tr:gt(0):lt(3)").css("backgroundColor", "yellow");
我們要注意的是，gt(0)以後，索引為0的已經被排除了，那麼剩下的有重新計數，下標又從0開始。
小明,小張,小方(0,1,2)三行黃
③$("tr:gt(3):lt(2)").css("backgroundColor", "yellow");
1 大於3，找到小圓。
2 小圓，小壯，小張(0,1,2)，
3 小於2，小圓，小壯(0,1)黃。
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
