这里使用的Element文档版本是2.13.1。
路由文件index.js：
import Vue from ‘vue‘
import Router from ‘vue-router‘
import Login from ‘@/components/Login‘
import Main from ‘@/components/Main‘
import Form from ‘@/components/Form‘
import Data from ‘@/components/Data‘
import Radio from ‘@/components/Radio‘
import Checkbox from ‘@/components/Checkbox‘
import Table from ‘@/components/Table‘
import Tag from ‘@/components/Tag‘
import Button from ‘@/components/Button‘
import Tabs from ‘@/components/Tabs‘
import Echarts from ‘@/components/Echarts‘
import Dialog from ‘@/components/Dialog‘
import Tree from ‘@/components/Tree‘
Vue.use(Router);
let router = new Router({
mode: ‘hash‘,
routes: [
{
path: ‘/‘,
name: ‘index‘,
redirect: ‘/login‘
},
{
path: ‘/login‘,
name: ‘login‘,
component: Login,
meta: {
title: ‘Login‘
}
},
{
path: ‘/main‘,
alias: ‘/main‘,
name: ‘main‘,
component: Main,
meta: {
title: ‘Main‘
},
children: [
{
path: ‘/main/form‘,
alias: ‘/form‘,
name: ‘form‘,
component: Form,
meta: {
title: ‘Form‘,
icon: ‘el-icon-eleme‘,
requireAuth: true
},
children: [
{
path: ‘/main/form/radio‘,
alias: ‘/radio‘,
name: ‘radio‘,
component: Radio,
meta: {
title: ‘Radio‘,
requireAuth: true
}
},
{
path: ‘/main/form/checkbox‘,
alias: ‘/checkbox‘,
name: ‘checkbox‘,
component: Checkbox,
meta: {
title: ‘Checkbox‘,
requireAuth: true
}
}
]
},
{
path: ‘/main/data‘,
alias: ‘/data‘,
name: ‘data‘,
component: Data,
meta: {
title: ‘Data‘,
icon: ‘el-icon-upload‘,
requireAuth: true
},
children: [
{
path: ‘/main/data/table‘,
alias: ‘/table‘,
name: ‘table‘,
component: Table,
meta: {
title: ‘Table‘,
requireAuth: true
}
},
{
path: ‘/main/data/tag‘,
alias: ‘/tag‘,
name: ‘tag‘,
component: Tag,
meta: {
title: ‘Tag‘,
requireAuth: true
}
}
]
},
{
path: ‘/main/button‘,
alias: ‘/button‘,
name: ‘button‘,
component: Button,
meta: {
title: ‘Button‘,
icon: ‘el-icon-s-order‘,
requireAuth: true
}
},
{
path: ‘/main/tabs‘,
alias: ‘/tabs‘,
name: ‘tabs‘,
component: Tabs,
meta: {
title: ‘Tabs‘,
icon: ‘el-icon-s-flag‘,
requireAuth: true
}
},
{
path: ‘/main/echarts‘,
alias: ‘/echarts‘,
name: ‘echarts‘,
component: Echarts,
meta: {
title: ‘Echarts‘,
icon: ‘el-icon-s-data‘,
requireAuth: true
}
},
{
path: ‘/main/dialog‘,
alias: ‘/dialog‘,
name: ‘dialog‘,
component: Dialog,
meta: {
title: ‘Dialog‘,
icon: ‘el-icon-phone‘,
requireAuth: true
}
}
]
},
{
path: ‘/tree‘,
alias: ‘/tree‘,
name: ‘tree‘,
component: Tree,
meta: {
title: ‘Tree‘,
icon: ‘el-icon-s-marketing‘,
requireAuth: true
}
}
]
});
export default router
router.beforeEach((to, from, next) => {
let islogin = localStorage.getItem("islogin");
islogin = Boolean(Number(islogin));
if(to.path == "/login"){
if(islogin){
next("/main/form/radio");
}else{
next();
}
}else{
// requireAuth:可以在路由元信息指定哪些页面需要登录权限
if(to.meta.requireAuth && islogin) {
next();
}else{
next("/login");
}
}
})
关键：除了login之外，其它都加上alias属性。
Main.vue：
<template>
<div id="app">
<el-container style="height: 100%;">
<el-header style="height: 80px;" :style="topBg">
<Header />
</el-header>
<el-container>
<el-aside width="210px" :style="leftBg">
<el-row class="tac">
<el-col :span="24">
<el-menu
:default-active="$route.path"
class="el-menu-vertical-demo"
@open="handleOpen"
@close="handleClose"
background-color="none"
text-color="#fff"
active-text-color="#ff0000"
>
<template v-for="route in this.$router.options.routes[2].children">
<!-- 循环有子目录的菜单 -->
<el-submenu
:key="route.alias"
:index="route.alias"
v-if="route.children && route.children.length"
>
<template slot="title">
<i :class="route.meta.icon"></i>
<span>{{route.meta.title}}</span>
</template>
<el-menu-item-group>
<router-link
:to="subroute.alias"
:key="subroute.alias"
v-for="subroute in route.children"
>
<el-menu-item :index="subroute.alias">{{subroute.meta.title}}</el-menu-item>
</router-link>
</el-menu-item-group>
</el-submenu>
<!-- 循环有子目录的菜单 -->
<!-- 循环没有子目录的菜单 -->
<router-link
:to="route.alias"
:key="route.alias"
v-else-if="!route.children && route.alias != ‘/‘ && route.alias != ‘/login‘"
>
<el-menu-item :index="route.alias">
<i :class="route.meta.icon"></i>
<span slot="title">{{route.meta.title}}</span>
</el-menu-item>
</router-link>
<!-- 循环没有子目录的菜单 -->
</template>
</el-menu>
</el-col>
</el-row>
</el-aside>
<el-main>
<router-view></router-view>
</el-main>
</el-container>
</el-container>
</div>
</template>
<script>
import Header from "@/components/Header";
export default {
name: "App",
data() {
return {
leftBg: {
background:
"#235d8b url(" +
require("../assets/left-bg.png") +
") no-repeat scroll 0 bottom"
},
topBg: {
background:
"#235d8b url(" +
require("../assets/top-bg.png") +
") no-repeat scroll right 0",
height: "80px",
fontSize: "32px",
color: "#ffffff"
}
};
},
components: {
Header
},
methods: {
handleOpen(key, keyPath) {
console.log(key, keyPath);
},
handleClose(key, keyPath) {
console.log(key, keyPath);
}
}
};
</script>
<style>
#app {
font-family: "Avenir", Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
color: #2c3e50;
height: 100%;
}
.el-header,
.el-footer {
background-color: #b3c0d1;
color: #333;
line-height: 80px;
}
.el-aside {
background-color: #d3dce6;
color: #333;
}
.el-aside a{
text-decoration: none;
}
.el-menu {
background: none;
border-right: 0;
}
.el-menu-item-group .el-menu-item{
padding-left: 52px !important;
}
.el-menu-item.is-active {
color: #409EFF;
background: #ffffff;
}
.el-main {
background-color: #ffffff;
color: #333;
padding: 0;
}
body > .el-container {
margin-bottom: 40px;
}
.el-container:nth-child(5) .el-aside,
.el-container:nth-child(6) .el-aside {
line-height: 260px;
}
.el-container:nth-child(7) .el-aside {
line-height: 320px;
}
</style>其中关键是：
根据路由高亮list、刷新自动展开定位路由由这个来控制：
:default-active="$route.path"循环路由：
<template v-for="route in this.$router.options.routes[2].children">......</template>另一个关键：
‘<el-menu>‘中的‘<router-link></router-link>‘，不然没法导航到相关组件。
Form.vue、Data.vue组件模板中需要添加‘<router-view></router-view>‘。
Vue+Element-ui实现左侧二级导航（可配置路由、所有路由层级可统一、可根据路由高亮菜单项、刷新时可自动展开定位到当前路由）
原文：https://www.cnblogs.com/samve/p/13325159.html