纯JS实现无限极分类
<!DOCTYPE html>
<html>
<head>
<title></title>
//引入Jquery
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js"></script>
<style type="text/css">
.one{
background: red; } .two{
background-color: green;
margin-left: 30px;
} .three{
background-color: yellow;
margin-left: 60px;
} li{
list-style: none;
border: 1px red solid;
margin-top:10px;
width: 200px;
} </style>
</head>
<body> <div id="add"> <!-- <li class="one">上衣</li>
<li class="two">男装</li>
<li class="three">男西装</li> --> </div> </body>
<script type="text/javascript">
//首先定义一个数组，分类是按照父级分类pid来判断的
var arr=[
{id:1,name:"上衣",pid:0},
{id:2,name:"裤子",pid:0},
{id:3,name:"鞋子",pid:0},
{id:9,name:"电子",pid:0},
{id:4,name:"男装",pid:1},
{id:5,name:"男皮衣",pid:4},
{id:6,name:"男西装",pid:4}, {id:7,name:"休闲裤",pid:2}, {id:8,name:"手机",pid:9}, ]
//用的是3层foreach循环 arr.forEach(function(value, index, array) {
// console.log(value.name+"-----"+index+"----"+array);
if (value.pid==0) {
// console.log(value.name);
//如果是顶级分类的话，就用class=one的li标签
var one="<li class='one'>"+value.name+"</li>";
$("#add").append(one); arr.forEach(function(value1,index1){ if(value1.pid==value.id){
//如果是二级分类,就用class=two 的li标签
var two="<li class='two'>"+value1.name+"</li>";
$("#add").append(two);
arr.forEach(function(value2,index2){ if(value2.pid==value1.id){
//如果是三级分类,就用class=three的li标签
var three="<li class='three'>"+value2.name+"</li>";
$("#add").append(three); }
}) } })
}
}); </script>
</html>