1.vue的异步组件:resolve=>require(['需要异步加载的组件'],resolve)
2.es6的import方法:()=>import(需要异步加载的组件)
3.webpack的 require.ensure: r => require.ensure([],()=>r( require(需要异步加载的组件)),chunkName)

1.vue的异步组件:resolve=>require(['需要异步加载的组件'],resolve)
2.es6的import方法:()=>import(需要异步加载的组件)
3.webpack的 require.ensure: r => require.ensure([],()=>r( require(需要异步加载的组件)),chunkName)