export-import那些事

1. export default

export default class App extends Component {
    render (){ ...

import App from './component/app'; //其实App不需要和export一直,import本身就默认是App导入了,此处只是自定一个引用名

2. export

export function counter(state =0, action){
...

import {INCREASE,DECREASE,INCREASASYCN} from "./action-types";

3. import * as

export function increaseCreator(num){
...

import * as actionCreator from '../redux/action-creator'
actionCreator.increaseCreator(num)