<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>引入jQuery库</title> <script type="text/javascript" language="javascript" src="jquery-3.2.1.js"></script> <script> $(document).ready(function(){ $("tr:odd").addClass("odd"); $("tr:even").addClass("even") }) </script> <style type="text/css"> .odd{ background-color: red; } .even{ background-color: blue; } </style> </head> <body> <table border="1"> <tr><td>学号</td><td>姓名</td><td>班级</td></tr> <tr><td>2015180001</td><td>张三</td><td>15信管本科班</td></tr> <tr><td>2015181001</td><td>李四</td><td>16信管本科班</td></tr> </table>
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原文：http://www.cnblogs.com/qfdy123/p/7753100.html