//CMD Common Module Definition define(function(require, exports, module) { var a = require('./a') a.doSomething() //... var b = require('./b') // 依赖可以就近书写 b.doSomething() // ... }) //AMD Asynchronous Module Definition define(['./a', './b'], function(a, b) { // 依赖必须一开始就写好 a.doSomething() //... b.doSomething() //... })