详解Nuxt内导航栏的两种实现方式

{
  path: "/",
  component: _93624e48,
  children: [{
   path: "",
   component: _7ba30c26,
   name: "index"
  }, {
   path: "user",
   component: _6934afa7,
   name: "index-user"
  }]
 }

<template>
 <div class="container">
  <div>
   <logo />
   <h1 class="title">
    nuxt-demo
   </h1>
   // 直接访问路由
   <!-- <nuxt-link to="/users">用户列表</nuxt-link> -->
   // 通过push的方式直接访问路由路径
   <!-- <el-button @click="$router.push('/users')">用户列表</el-button> -->
   // 通过push的方式，同时用对象的方式访问路由
   <el-button @click="$router.push({name: 'index'})">首页</el-button>
   <el-button @click="$router.push({name: 'index-user'})">用户详情</el-button>
  </div>
  // nuxt规定的子路由插槽
  <nuxt-child></nuxt-child>
 </div>
</template>

<template>
 <div id="nav-wrapper">
  <el-menu :default-active="activeIndex" class="el-menu-demo" mode="horizontal" @select="handleSelect">
   <el-menu-item index="1" @click="$router.push({name: 'index'})">首页</el-menu-item>
   <el-menu-item index="3" @click="$router.push({name: 'users'})">用户页面</el-menu-item>
   <el-menu-item index="4" @click="$router.push({name: 'active'})">活动页面</el-menu-item>
  </el-menu>
 </div>
</template>

<template>
 <div class="container">
  <div>
   <logo />
   <h1 class="title">
    nuxt-demo
   </h1>
   <navBar />
  </div>
 </div>
</template>

<script>
import Logo from '~/components/Logo.vue'
import navBar from '~/components/nav.vue'

export default {
 components: {
  Logo,
  navBar
 }
}
</script>

<style>

store/index.js should export a method that returns a Vuex

<template>
 <div id="nav-wrapper">
  <el-menu :default-active="activeIndex" class="el-menu-demo" mode="horizontal" @select="handleSelect">
   <el-menu-item index="1" @click="$router.push({name: 'index'})">首页</el-menu-item>
   <el-menu-item index="3" @click="$router.push({name: 'users'})">用户页面</el-menu-item>
   <el-menu-item index="4" @click="$router.push({name: 'active'})">活动页面</el-menu-item>
  </el-menu>
 </div>
</template>

<script>
 import {mapGetters, mapMutations} from 'vuex'
 export default{
  data() {
   return {
    activeIndex: '1',
    activeIndex2: '1'
   };
  },
  computed: {
   ...mapGetters([
    'barIndex'
   ])
  },
  methods: {
   ...mapMutations({
    'change_index': 'CHANGE_INDEX'
   }),
   handleSelect(key, keyPath) {
    console.log(key, keyPath);
    this.activeIndex = key
    // 每次切换导航栏，会把当前状态同步到vuex中
    this.change_index(this.activeIndex)
   }
  },
  created() {
   if (this.barIndex) { // 判断vuex内是否有上一次存储的数据，有就同步到当前状态
    this.activeIndex = this.barIndex
   }
   console.log('vuex', this.activeIndex)
  }
 }
</script>