<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="${ pageContext.request.contextPath }/js/jquery-1.8.3.js"></script>
<title>Insert title here</title>
<script type="text/javascript">
$(function(){
//全选
$("#selAll").click(function(){
//获取所有复选框，设置checked属性
$("input[type=\'checkbox\']").attr("checked","checked");
});
//全不选
$("#selNo").click(function(){
$("input[type=\'checkbox\']").removeAttr("checked");
});
//在boxId上绑定点击的事件，判断当前复选框是否被选中，如果被选中，3个爱好都被选中
$("#boxId").click(function(){
//判断当前复选框是否被选中
if($(this).attr("checked")=="checked"){
$("input[type=\'checkbox\']").attr("checked","checked");
}else{
$("input[type=\'checkbox\']").removeAttr("checked");
}
});
//在爱好上绑定事件
$("input[name=\'hobby\']").click(function(){
//判断3个爱好被选中的个数
if($("input[name=\'hobby\']:checked").size()==3){
//全被选中了
$("#boxId").attr("checked","checked");
}else{
$("#boxId").removeAttr("checked");
}
});
});
</script>
</head>
<body>
<h3>全选全不选</h3>
<input type="checkbox" id="boxId" />全选/全不选<br/>
<input type="checkbox" name="hobby" />抽烟<br/>
<input type="checkbox" name="hobby" />喝酒<br/>
<input type="checkbox" name="hobby" />烫头<br/>
<input type="button" value="全选" id="selAll"/>
<input type="button" value="全不选" id="selNo"/>
</body>
</html>