<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>selectAll</title> <style type="text/css"> table { border: 1px solid red; border-collapse:collapse; 300px; margin :auto; text-align:center; } </style> <script src="js/jquery-1.7.1.js"></script> <script type="text/javascript"> $(function () { $(".all").click(function () { if ($(".all").attr("checked")) {//全选 $(".cc").attr("checked", true); } else {//取消全选 $(".cc").removeAttr("checked"); } }) $(".cc").click(function () { SelectAll(); }) }) function SelectAll() { if (!$(".cc").attr("checked")) {//未选中 $(".all").attr("checked",false) } else {//全部选中 $(".all").attr("checked", true) } } </script> </head> <body> <table id="tb" border="1"> <tr> <td>序列</td> </tr> <tr> <td> <input type="checkbox" class="cc"/></td> </tr> <tr> <td><input type="checkbox" class="cc"/></td> </tr> <tr> <td><input type="checkbox" class="cc"/></td> </tr> <tr> <td><input type="checkbox" class="cc"/></td> </tr> <tr> <td><input type="checkbox" class="all" />all</td> </tr> </table> </body> </html>