使用vue+elementui实现 顶部导航栏并实现动态路由

首先，在Vue项目中安装ElementUI，可以使用npm命令：

npm install element-ui --save

然后在main.js中引入并使用ElementUI：

import Vue from 'vue'
import ElementUI from 'element-ui'
import 'element-ui/lib/theme-chalk/index.css'
import App from './App.vue'
import router from './router'

Vue.use(ElementUI)

new Vue({
  router,
  render: h => h(App),
}).$mount('#app')

接下来，我们可以在App.vue中添加顶部导航栏，结合ElementUI的el-menu组件实现：

<template>
  <div>
    <el-menu :default-active="$route.path" mode="horizontal" @select="handleSelect">
      <el-menu-item index="/">首页</el-menu-item>
      <el-submenu index="/about">
        <template slot="title">关于我们</template>
        <el-menu-item index="/about/company">公司简介</el-menu-item>
        <el-menu-item index="/about/team">团队介绍</el-menu-item>
      </el-submenu>
      <el-menu-item index="/contact">联系我们</el-menu-item>
    </el-menu>
    <router-view/>
  </div>
</template>

<script>
export default {
  methods: {
    handleSelect(key, keyPath) {
      this.$router.push(key)
    }
  }
}
</script>

然后，在router.js中定义路由，并将其动态添加至el-menu中：

import Vue from 'vue'
import Router from 'vue-router'
import Home from './views/Home.vue'

Vue.use(Router)

const routes = [
  {
    path: '/',
    name: 'home',
    component: Home
  },
  {
    path: '/about',
    name: 'about',
    component: () => import('./views/About.vue'),
    redirect: '/about/company',
    children: [
      {
        path: 'company',
        name: 'company',
        component: () => import('./views/Company.vue')
      },
      {
        path: 'team',
        name: 'team',
        component: () => import('./views/Team.vue')
      }
    ]
  },
  {
    path: '/contact',
    name: 'contact',
    component: () => import('./views/Contact.vue')
  }
]

const router = new Router({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

router.beforeEach((to, from, next) => {
  document.title = to.meta.title || 'My Website'
  next()
})

export default router

在这里，我们实现了顶部导航栏和动态路由。当用户点击菜单项时，会通过handleSelect方法来更新路由路径，然后通过vue-router来渲染对应的组件。