jQuery练习2表格隔行变色

 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 2 <html>
 3   <head>
 4     <title>exe_1.html</title>
 5     <meta http-equiv="content-type" content="text/html; charset=UTF-8">
 6     <script type="text/javascript" src="../js/jquery-1.9.1.js"></script>
 7     <style type="text/css">
 8          .jishu{
 9              background:#0000ff;
10          }
11      .ershu{
12          background:#ffff00;
13      }
14     </style>
15   </head>
16   <body>
17       <!--表格隔行变色-->
18     <table border="1" align="center">
19         <tr>
20             <th>用户名</th>
21             <th>密码</th>
22         </tr>
23         <tr>
24             <td>张三</td>
25             <td>123456</td>
26         </tr>
27         <tr>
28             <td>李四</td>
29             <td>654321</td>
30         </tr>
31         <tr>
32             <td>王五</td>
33             <td>162534</td>
34         </tr>
35     </table> 
36     <script type="text/javascript">
37         
38         //取得大于2行
39         //alert($("tr:gt(0)").html());
40         
41         $("tr:eq(0)").css({background:"blue"});
42         $("tr:gt(0):even").css("background","red");
43         $("tr:gt(0):odd").css("background","yellow");
44         
45     </script>
46   </body>
47 </html>