<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>选择器实现各行变色</title> <link href="../../CSS/2-2.css" rel="stylesheet" /> <script src="../../JQuery/jquery-1.4.2.min.js"></script> <script type="text/javascript"> $(function () { $("#tbStu tr:nth-child(even)").addClass("trOdd"); }) </script> </head> <body> <table id="tbStu"> <tbody> <tr> <th>学号</th><th>姓名</th><th>性别</th><th>总分</th> </tr> <tr> <td>1001</td><td>张小明</td><td>男</td><td>320</td> </tr> <tr> <td>1002</td><td>李明琪</td><td>女</td><td>350</td> </tr> </tbody> </table> </body> </html>