vue router按需加载

import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router);
//按需加载,当渲染其他页面时才加载其组件,并缓存,减少首屏加载时间
const Index = resolve => require(['@/views/Index.vue'], resolve)
const Category = resolve => require(['@/views/Category.vue'], resolve)
const CategoryMain = resolve => require(['@/components/category/main.vue'], resolve)
const Car = resolve => require(['@/views/Car.vue'],resolve)
const User = resolve => require(['@/views/User.vue'], resolve)
const Detail = resolve => require(['@/views/Detail.vue'], resolve)
const Search = resolve => require(['@/views/Search.vue'], resolve)
const Pay = resolve => require(['@/components/car/pay/pay.vue'], resolve)
const Login = resolve => require(['@/views/login.vue'], resolve)


export default new Router({
  routes: [{
      path: '/',
      name: '首页',
      component: Index
    }, {
      path: '/category',
      name: '分类页',
      redirect: '/category/all',
      component: Category,
      children: [{
        path: '/category/:tab',
        component:CategoryMain
      }]
    }, {
      path: '/car',
      name: '购物车页',
      component: Car
    }, {
      path: '/car/pay',
      name: '支付页',
      component: Pay
    },
    {
      path: '/user',
      name: '用户页',
      component: User,
      meta: {
           requireAuth: true,  // 添加该字段，表示进入这个路由是需要登录才能进入的
       },
    }, {
      path: '/detail',
      name: '详情页',
      component: Detail
    }, {
      path: '/search',
      name: '搜索页',
      component: Search
    },{
      path: '/login',
      name: '登录页',
      component: Login
    }
  ]
})

import Vue from 'vue'
import Router from 'vue-router'

// import Index from '@/components/index/index'
// import Find from '@/components/find/find'
// import Order from '@/components/order/order'
// import Mine from '@/components/mine/mine'
// import RestaurantDetail from '@/components/index/restaurant-detail/restaurant-detail'
// import RestaurantList from '@/components/index/restaurant-list/restaurant-list'
// import Goods from '@/components/index/restaurant-detail/goods/goods'
// import Ratings from '@/components/index/restaurant-detail/ratings/ratings'
// import Seller from '@/components/index/restaurant-detail/seller/seller'
// import login from '@/components/login/login'

Vue.use(Router)

// 路由懒加载
const Index = (resolve) => {
  import('@/components/index/index').then((module) => {
    resolve(module)
  })
}
const Find = (resolve) => {
  import('@/components/find/find').then((module) => {
    resolve(module)
  })
}
const Order = (resolve) => {
  import('@/components/order/order').then((module) => {
    resolve(module)
  })
}
const Mine = (resolve) => {
  import('@/components/mine/mine').then((module) => {
    resolve(module)
  })
}
const RestaurantDetail = (resolve) => {
  import('@/components/index/restaurant-detail/restaurant-detail').then((module) => {
    resolve(module)
  })
}
const RestaurantList = (resolve) => {
  import('@/components/index/restaurant-list/restaurant-list').then((module) => {
    resolve(module)
  })
}
const Goods = (resolve) => {
  import('@/components/index/restaurant-detail/goods/goods').then((module) => {
    resolve(module)
  })
}
const Ratings = (resolve) => {
  import('@/components/index/restaurant-detail/ratings/ratings').then((module) => {
    resolve(module)
  })
}
const Seller = (resolve) => {
  import('@/components/index/restaurant-detail/seller/seller').then((module) => {
    resolve(module)
  })
}
const login = (resolve) => {
  import('@/components/login/login').then((module) => {
    resolve(module)
  })
}

export default new Router({
  routes: [
    // 根路径
    {
      path: '/',
      redirect: '/index',
      component: Index
    },
    // 首页
    {
      path: '/index',
      component: Index
    },
    // 登录
    {
      path: '/login',
      component: login
    },
    // 商家列表
    {
      path: '/restaurant_list',
      component: RestaurantList
    },
    // 商家模块
    {
      path: '/restaurant',
      redirect: '/restaurant/goods',
      component: RestaurantDetail,
      children: [
        {
          path: 'goods',
          component: Goods
        },
        {
          path: 'ratings',
          component: Ratings
        },
        {
          path: 'seller',
          component: Seller
        }
      ]
    },
    // 发现
    {
      path: '/find',
      component: Find
    },
    // 订单
    {
      path: '/order',
      component: Order
    },
    // 我的
    {
      path: '/mine',
      component: Mine
    }
  ]
})