#### 1.ES6模块化 ```js export function import {} export default import ``` #### 2.CommonJs commonJS是node的规范 ```js module.exports = { } exports.a = const a = require('./a.js') ``` #### 3.AMD (requireJs提出) ```js define(['./a', './b'], funciont(a,b) { a.do() b.d() }) ```