vue项目中路由懒加载的三种方式

1 . vue异步组件技术 ==== 异步加载

vue-router配置路由 , 使用vue的异步组件技术 , 可以实现按需加载 .

但是,这种情况下一个组件生成一个js文件

/* vue异步组件技术 */

{ path: '/home', name: 'home',component: resolve =>require(['@/components/home'],resolve)},{ path: '/index', name: 'Index', component: resolve => require(['@/components/index'],resolve) },{ path: '/about', name: 'about', component: resolve => require(['@/components/about'],resolve) }

2.组件懒加载方案二 路由懒加载(使用import)

const 组件名=() => import('组件路径');// 下面2行代码，没有指定webpackChunkName，每个组件打包成一个js文件。/* const Home = () => import('@/components/home')const Index = () => import('@/components/index')const About = () => import('@/components/about') */// 下面2行代码，指定了相同的webpackChunkName，会合并打包成一个js文件。把组件按组分块const Home = () => import(/* webpackChunkName: 'ImportFuncDemo' */ '@/components/home')const Index = () => import(/* webpackChunkName: 'ImportFuncDemo' */ '@/components/index')const About = () => import(/* webpackChunkName: 'ImportFuncDemo' */ '@/components/about'){ path: '/about', component: About }, { path: '/index', component: Index }, { path: '/home', component: Home }

3.webpack提供的require.ensure()

vue-router配置路由，使用webpack的require.ensure技术，也可以实现按需加载。这种情况下，多个路由指定相同的chunkName，会合并打包成一个js文件。/* 组件懒加载方案三: webpack提供的require.ensure() */{ path: '/home', name: 'home', component: r => require.ensure([], () => r(require('@/components/home')), 'demo') },{ path: '/index', name: 'Index', component: r => require.ensure([], () => r(require('@/components/index')), 'demo') },{ path: '/about', name: 'about', component: r => require.ensure([], () => r(require('@/components/about')), 'demo-01') }// r就是resolveconst list = r => require.ensure([], () => r(require('../components/list/list')), 'list');// 路由也是正常的写法 这种是官方推荐的写的 按模块划分懒加载const router = new Router({routes: [{ path: '/list/blog', component: list, name: 'blog'}]})