vue实现多级菜单效果

<template>
 <div class="layout">
 <Layout>
  <Header>
  <Menu mode="horizontal" theme="dark" active-name="1">
   <div class="layout-logo"></div>
   <div class="layout-nav">
   <MenuItem name="1">
    <Icon type="ios-navigate"></Icon>
    Item 1
   </MenuItem>
   <MenuItem name="2">
    <Icon type="ios-keypad"></Icon>
    Item 2
   </MenuItem>
   <MenuItem name="3">
    <Icon type="ios-analytics"></Icon>
    Item 3
   </MenuItem>
   <MenuItem name="4">
    <Icon type="ios-paper"></Icon>
    Item 4
   </MenuItem>
   </div>
  </Menu>
  </Header>
 </Layout>
 <Layout style="height: 100%;width: 100%;">
  <Sider hide-trigger breakpoint="md" width="200" :value=true>
   //方法一使用Tree树控件,绑定点选事件
   <Tree :data="data1" @on-select-change="selectChange"></Tree>
   //方法二使用menu导航菜单和递归
   <!--<SubItem :model="item" :sindex="index" v-for="(item,index) in data1" :key="index"></SubItem>-->
  </Sider>
  <Layout >
  <router-view></router-view>
  </Layout>
 
 </Layout>
 
 </div>
 
</template>
<script>
 import SubItem from './SubItemm.vue'
 export default {
  ponents:{
   SubItem
  },
  data () {
   return {
    data1: [
     {
      title: 'parent 1',
      expand: true,
      url:null,
      children: [
       {
        title: 'parent 1-1',
        url:null,
        children: [
         {
          title: 'leaf 1-1-1',
          url:'/chpo/chpo/chpoShow'
         },
         {
          title: 'leaf 1-1-2',
          url:'/chpo/chpoCollection/chpocollectionshow'
         }
        ]
       },
       {
        title: 'parent 1-2',
        url:null,
        children: [
         {
          title: 'leaf 1-2-1',
          url:'/pany/course/courseshow'
         },
         {
          title: 'leaf 1-2-1',
          url:'/system/sysgamutgame/gamutgameshow'
         }
        ]
       }
      ]
     }
    ]
   }
  }，
  methods:{
   selectChange(node,curr){
    //node 当前已选中的节点数组
    //curr 当前项,这里可是拿到当前项的数据，这样可以拿到跳转的URL
    if(curr.url)
    this.$router.push(curr.url)
   }
  }
 }
</script>

import Vue from 'vue'
import Router from 'vue-router'
import ponent1 from '@/ponents/ponent1'
import ponent2 from '@/ponents/ponent2'
import ponent3 from '@/ponents/ponent3'
import ponent4 from '@/ponents/ponent4'
import Index from '../view/Index'
 
Vue.use(Router)
 
export default new Router({
 routes: [
 {
  path: '/',
  name:'Index',
  ponent: Index,
  children:[
  {
   path: '/chpo/chpo/chpoShow',
   name:'ponent1',
   ponent: ponent1
  },
  {
   path: '/chpo/chpoCollection/chpocollectionshow',
   name:'ponent2',
   ponent: ponent2
  },
  {
   path: '/pany/course/courseshow',
   name:'ponent3',
   ponent: ponent3
  },
  {
   path: '/system/sysgamutgame/gamutgameshow',
   name:'ponent4',
   ponent: ponent4
  },
  ]
 },
 
 ]
})

<template>
 <Submenu :name="model.title" style="width: 200px">
 <template slot="title" style="width: 200px">
  {{model.title}}
 </template>
 // v-if判断是否为最终的子项，如果是则进行MenuItem渲染，否则进行递归调用
 <MenuItem :name="item.title" v-for="item in model.children" :to="item.url" v-if="!item.children || item.children.length==0" :key="item.index" style="width: 200px">{{item.title}}</MenuItem>
  //递归调用
 <SubItem :model="item" v-if="item.children&&item.children.length!==0" v-for="(item,index) in model.children" :key="index"></SubItem> 
 
 </Submenu>
</template>
 
<script>
 export default {
  name: "SubItem", //至关重要的一步，一定要写name，递归的时候使用
  props:['model'],
 }
</script>