vue左侧菜单,树形图递归实现代码

import Vue from 'vue'
export default new Vue

<ul v-for="menuItem in theModel">
<my-tree :model="menuItem"></my-tree>
</ul>

theModel:[{
 'id': '1',
 'menuName': '导航1',
 'menuCode': '10',
'menuUrl':'',
 'childMenus': [
 {
 'menuName': '用户管理',
 'menuCode': '11',
'menuUrl':'/home',
'menuPath':'',
'childMenus':[{
 'menuName': '11111',
 'menuCode': '12',
'menuUrl':'/systemjuri',
'menuPath':'',
 'childMenus': []
 }]
 },
 {
 'menuName': '角色管理',
 'menuCode': '12',
'menuUrl':'/systemjuri',
'menuPath':'',
 'childMenus': []
 },
 {
 'menuName': '菜单管理',
'menuUrl':'/systemmenu',
 'menuCode': '13',
'menuPath':'http://10.63.195.214:8080/menuManage/html/index_3.html',
'childMenus':[]
 }]
 },{
'id': '1',
 'menuName': '导航2',
 'menuCode': '10',
 'childMenus':[]
}],

import myTree from './treeMenu.vue'
export default {
  components: {
  myTree
  },
}

<template>
<li>
<span @click="toggle(model.menuName,model.menuUrl,model.menuPath)">
<i v-if="!isFolder" class="icon file-text">●</i>
{{ model.menuName }}
<i v-if="isFolder" class="icon" :class="[open ? 'folder-open': 'folder']"></i>
</span>
<ul v-show="open" v-if="isFolder">
<tree-menu v-for="item in model.childMenus" :model="item" :key="item.menuId"></tree-menu>
</ul>
</li>
</template>
<script>
import bus from "./../../../static/js/bus";
export default {
name: 'treeMenu',
props: ['model'],
data() {
return {
open: false,
}
},
computed: {
isFolder() {
return this.model.childMenus && this.model.childMenus.length
}
},
methods: {
toggle(msg,menuUrl,menuPath) {
if (this.isFolder) {
this.open = !this.open
}
var json = { msg: msg, menuUrl: menuUrl,menuPath:menuPath };
bus.$emit("childEvent", json)
},
}
}
</script>
<style>
ul {
list-style: none;
}
i.icon {
display: inline-block;
width: 15px;
height: 15px;
background-repeat: no-repeat;
vertical-align: middle;
float: right;
margin-top: 17px;
margin-right:30px;
}
.icon.folder {
background-image: url('./homeimg/left_1.png');
}
.icon.folder-open {
background-image: url('./homeimg/dowm_1.png');
}
.icon.file-text {
}
ul li ul li .icon.folder {
background-image: url('./homeimg/left_2.png');
}
ul li ul li .icon.folder-open {
background-image: url('./homeimg/down_2.png');
}
.tree-menu li {
line-height: 50px;
}
span{
display: block;
width: 100%;
height: 100%;
}
ul{
padding-left:10px;
}
ul li span{
text-indent: 10px;
}
ul li ul{
background:#ebf1f8;
color:#1457a7;
}
li:hover{
cursor:pointer;
}
</style>