export 重命名 及默认导出

babel babel-polyfile jspm

//a.js

let food = “苹果”

let fruits = "香蕉"

function dinner() {

　　return "11111"

}

export {food,fruits,dinner as supper}

 

//

import {food, fruits, supper as dinner} from a.js

 

//默认导出有两种方法

//script.js

'use strict';

方法一： export default funtion dinner(a,b){

　　console.log(`${a},${b}`)

}

方法二：

function dinner(a,b){

  console.log(a,b)

}

export {dinner as default}

//main.js

import food from script.js

food(1,2)