vue router-view的嵌套显示实现

一、路由配置

const routes = [
  {
    path: '/',
    name: '导航1',
    component: Home,
    children:[
      {
        path: '/customer',
        name: 'Customer',
        // route level code-splitting
        // this generates a separate chunk (about.[hash].js) for this route
        // which is lazy-loaded when the route is visited.
        component: () => import(/* webpackChunkName: "about" */ '../views/Customer.vue')
      },
      {
        path: '/pageOne',
        name: '页面1',
        component: PageOne,

      },
      {
        path: '/pageTwo',
        name: '页面2',
        component: PageTwo,
    },
    ]
  },
  {
    path: '/navigation',
    name: '导航2',
    component: Home,
    children:[
      {
        path: '/pageThree',
        name: '页面3',
        component: PageThree,

      },
      {
        path: '/pageFour',
        name: '页面4',
        component: PageFour
      },
    ]
  },

二、vue页面嵌套

App.vue先配置第一个router-view

// An highlighted block
 <router-view></router-view>

Home.vue配置第二个router-view

// An highlighted block
<template>
  <div>
  <el-container style="height: 500px; border: 1px solid #eee">
    <el-aside width="200px" style="background-color: rgb(238, 241, 246)">

      <el-menu>
        <el-submenu v-for="(item,index) in $router.options.routes" :index="index+''">
        <template slot="title"><i class="el-icon-sell"></i>{{item.name}}</template>
          <el-menu-item v-for="(item2,index2) in item.children" :index="index+'-'+index2">{{item2.name}}</el-menu-item>
        </el-submenu>
      </el-menu>
    </el-aside>

    <el-container>
      <el-header style="text-align: right; font-size: 12px">
        <el-dropdown>
          <i class="el-icon-setting" style="margin-right: 15px"></i>
          <el-dropdown-menu slot="dropdown">
            <el-dropdown-item>查看</el-dropdown-item>
            <el-dropdown-item>新增</el-dropdown-item>
            <el-dropdown-item>删除</el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>
        <span>王小虎</span>
      </el-header>

      <el-main>
        <router-view></router-view>

      </el-main>
    </el-container>

  </el-container>

</div>
</template>

<style>
.el-header {
  background-color: #B3C0D1;
  color: #333;
  line-height: 60px;
}

.el-aside {
  color: #333;
}
</style>

<script>
export default {

};
</script>

三、嵌套联系

首先，在访问http://localhost:8181/时会进入第一层嵌套，此时进入第一个router-view：Home.vue。然后当访问pageone时，会连带Home.vue继续访问。

因为router-view的嵌套显示和路由路基的嵌套有关，可以看到，在路由里面，导航一的路径底下分别是页面一以及页面二的路由路径。所以当访问页面一pageone时，会先访问上级路径Home.vue页面。加入Home.vue页面没有放置router-view，那么下级页面将无法显示

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