vue设置导航栏、侧边栏为公共页面的例子

<template>
 <div id="app">
  <!-- 其他页 -->
  <el-container >
   <el-header>
    <!-- 导航栏 -->
     <header-nav></header-nav>
   </el-header>
  <el-container>
   <el-aside width="250px">
    <!-- 侧边栏 -->
     <left></left>
   </el-aside>
   <el-main>
    <!-- Body -->
     <router-view></router-view>
   </el-main>
  </el-container>
  </el-container>
 
  <!-- 登录页 -->
  <router-view ></router-view>
  </div>
</template>
 
<script>
import header from './components/Header.vue';
import left from './components/Left.vue';
 
export default{
  components: {
    headerNav: header,
    left: left
   }
}
 
</script>
 
<style>
 
</style>

<template>
 <div id="app">
  <!-- 其他页 -->
  <el-container v-if="$route.meta.keepAlive">
   <el-header>
    <keep-alive>
    <!-- 导航栏 -->
     <header-nav></header-nav>
    </keep-alive>
   </el-header>
  <el-container>
   <el-aside width="250px">
    <!-- 侧边栏 -->
    <keep-alive>
     <left></left>
    </keep-alive>
   </el-aside>
   <el-main>
    <!-- Body -->
     <router-view></router-view>
   </el-main>
  </el-container>
  </el-container>
 
  <!-- 登录页 -->
  <router-view v-if="!$route.meta.keepAlive"></router-view>
  </div>
</template>
 
<script>
import header from './components/Header.vue';
import left from './components/Left.vue';
 
export default{
  components: {
    headerNav: header,
    left: left
   }
}
 
</script>
 
<style>
 
</style>

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
 
import Login from '@/views/Login'
import index from '@/views/index'
import versionList from '@/views/versionList'
 
Vue.use(Router)
 
export default new Router({
 routes: [
  {
   path: '/',
   name: 'login',
   component: Login,
   meta: {
    keepAlive: false
   }
  },
  {
   path: '/index',
   name: 'index',
   component: index,
   meta: {
    keepAlive: true
   }
  },
  {
   path: '/versionList',
   name: 'versionList',
   component: versionList,
   meta: {
    keepAlive: true
   }
  },
 ]
})