子开关全部开启或者关闭，总开关联动开或者关，最后一个为总开关,图片在底部。谢！
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>开关</title>
<style type="text/css">
*{
margin:0;
padding:0;
}
.switch{
float: left;
}
.swich{
width:41px;
height:47px;
margin:20px;
cursor: pointer;
}
.on,.off{
width:41px;
height:23px;
background: url(icon.png) no-repeat;
}
.on{
background-position: 0 0;
}
.off{
background-position: 0 -24px;
}
</style>
</head>
<body>
<p class="switch">
<p class="all">
<p class="swich off"></p>
<p class="swich off"></p>
<p class="swich on"></p>
<p class="swich on"></p>
<p class="swich on"></p>
<p class="swich off"></p>
<p class="swich on"></p>
<p class="swich on"></p>
</p>
<p class="swich off swichAll"></p>
</p>
<p class="switch">
<p class="all">
<p class="swich off"></p>
<p class="swich on"></p>
<p class="swich off"></p>
<p class="swich off"></p>
<p class="swich on"></p>
<p class="swich off"></p>
<p class="swich off"></p>
<p class="swich on"></p>
</p>
<p class="swich off swichAll"></p>
</p>
<p class="switch">
<p class="all">
<p class="swich on"></p>
<p class="swich on"></p>
<p class="swich off"></p>
<p class="swich on"></p>
<p class="swich on"></p>
<p class="swich off"></p>
<p class="swich on"></p>
<p class="swich off"></p>
</p>
<p class="swich off swichAll"></p>
</p>
<script type="text/javascript" src="http://cdn.bootcss.com/jquery/3.1.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
// 开关控制
$(".swich").click(function(){
if($(this).hasClass("off")){
$(this).attr("class","swich on");
}else{
$(this).attr("class","swich off");
}
});
// 开关全选/反选
$(".swichAll").click(function(){
if($(this).hasClass("off")){
$(this).prev().children("p").attr("class","swich off");
}else{
$(this).prev().children("p").attr("class","swich on");
}
});
});
</script>
</body>
</html>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
很久没写这种强耦合的面条代码了