vue组件懒加载三种方式及区别

1、vue异步组件
2、es6中import懒加载
3、require.ensure()


const Home = () => import(/*webpackChunkName:'home'*/'../components/home');
const Home1 = ()=> import(/*webpackChunkName:'home'*/'../components/home1')
const Login = r => require.ensure([],()=>r(require('../components/login'),'login')
new Router({
	routes:[
		{
			name:"index",
			path:"/index",
			component:resolve => require([''../components/index"], resolve)
			// 第一种 : 异步组件将每一个组件生成一个js文件
		},
		{
			name:"home",
			path:"/home",
			component:Home 
		},
		{
			name:"home1",
			path:"/home1",
			component:Home 
		},
		// 第二种 : 会将webpackChunkName名字相同的生成一个js文件		
		{
			name:"login",
			path:"/login",
			component:Login 
		}
		// 第三种 : 和第二种方法类似但是可以单独引入依赖会将名字相同的生成一个js文件	
	]
})

require.ensure(dependencies: String[], callback: function(require), chunkName: String)

resolve => require([’’],resolve)
import(/* webpackChunkName:’‘chunkname */ ‘’)
r => require.ensure([],() => r(require(’’)),‘chunkname’)

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