jQuery实现复选框的全选和反选：
截图如下：
代码如下：
index.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>列表框的综合应用</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(function(){
$("#checkAll").click(function(){
$('[name=checkbox]:checkbox').attr("checked",true);
});
$("#checkNO").click(function(){
$('[name=checkbox]:checkbox').attr("checked",false);
});
});
</script>
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td>
<div align="left">
<p>
<input type="checkbox" name="checkbox" value="checkbox"/>上网
<input type="checkbox" name="checkbox" value="checkbox"/>旅游
<input type="checkbox" name="checkbox" value="checkbox"/>交友
<input type="checkbox" name="checkbox" value="checkbox"/>逛街
<input type="checkbox" name="checkbox" value="checkbox"/>逛街
</p>
<p>
<input type="checkbox" name="checkbox" value="checkbox"/>看书
<input type="checkbox" name="checkbox" value="checkbox"/>书法
<input type="checkbox" name="checkbox" value="checkbox"/>游戏
<input type="checkbox" name="checkbox" value="checkbox"/>球类
</p>
<p align="right">
<input type="button" name="Submit" value="全选"/>
<input type="button" name="Submit2" value="全不选"/>
</p>
</div>
</td>
</tr>
</table>
</body>
</html>