<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <script src="jquery-1.9.1/jquery-1.9.1/jquery.js"></script> <script type="text/javascript"> $().ready(function () { $("#table1 tr:even").addClass("back_red"); $("#table1 tr:odd").addClass("back_green"); //鼠标点击变色 $("#table1 tr").click(function () { $(this).addClass("back_blue"); $(this).siblings().removeClass("back_blue"); }); }); </script> <style type="text/css"> .back_red { background-color:red; } .back_green { background-color:green; } .back_blue { background-color:blue; } #table1 { border-collapse:collapse; } #table1 td { 80px; height:30px; border:1px solid green; } </style> </head> <body> <table id="table1"> <tr> <td></td> <td></td> <td></td> <td></td> </tr> <tr> <td></td> <td></td> <td></td> <td></td> </tr> <tr> <td></td> <td></td> <td></td> <td></td> </tr> <tr> <td></td> <td></td> <td></td> <td></td> </tr> <tr> <td></td> <td></td> <td></td> <td></td> </tr> </table> </body> </html>