https://blog.csdn.net/cc_fys/article/details/81284638
树形菜单示例：
<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>树形菜单示例</title>
<style type="text/css">
ul>li{
list-style: none;
}
/* 可展开*/
.switch-open
{
margin-left:-12px;
border:6px solid transparent;
display:inline-block;
width:0px;
height:0px;
border-top-color: black;
}
/* 展开完毕*/
.switch-close
{
margin-left:-12px;
border:6px solid transparent;
display:inline-block;
width:0px;
height:0px;
border-left-color: black;
margin-bottom: 2px;
}
/* 改变CheckBox样式*/
input[type='checkbox']{
width: 20px;
height: 20px;
-webkit-appearance:none;
-moz-appearance: none;
border: 1px solid #c9c9c9;
border-radius: 3px;
outline: none;
color:white;
text-align: center;
}
input[type='checkbox']:before
{
content: '√ ';
color:transparent;
}
input[type=checkbox]:checked{
background-color: #30add6;
}
input[type=checkbox]:checked:before{
content: '√';
color:white;
font-weight: bold;
}
</style>
</head>
<body>
<div class="warp">
<ul id="container">
</ul>
</div>
<script type="text/javascript">
//结构
var json={
'0-0':{
'0-0-0':null,
'0-0-1':{
'0-0-1-0':null,
'0-0-1-1':null,
'0-0-1-2':null
},
'0-0-2':null
},
'0-1':{
'0-1-0':null,
'0-1-1':null
},
'0-2':null
};
//这里生成DOM
function generate(json,par)
{
for(var attr in json)
{
var ele=document.createElement('li');
if(!json[attr])
ele.innerHTML=' <input type="checkbox"></input>'+attr;
else
{
ele.innerHTML='<span><span class="switch-open" onclick="toggle(this)"></span><input type="checkbox" onclick="checkChange(this)"></input>'+attr+'</span>';
var nextpar=document.createElement('ul');
ele.appendChild(nextpar);
generate(json[attr],nextpar);
}
par.appendChild(ele);
}
}
generate(json,document.getElementById('container'));
//处理展开和收起
function toggle(eve)
{
var par=eve.parentNode.nextElementSibling;
if(par.style.display=='none')
{
par.style.display='block';
eve.className='switch-open';
}
else
{
par.style.display='none';
eve.className='switch-close';
}
}
//处理全部勾选和全部不选
function checkChange(eve)
{
var oul=eve.parentNode.nextElementSibling;
if(eve.checked)
{
for(var i=0;i<oul.querySelectorAll('input').length;i++)
{
oul.querySelectorAll('input')[i].checked=true;
}
}
else
{
for(var i=0;i<oul.querySelectorAll('input').length;i++)
{
oul.querySelectorAll('input')[i].checked=false;
}
}
}
</script>
</body>
</html>
实现效果：