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                # Commonjs模塊化教程 ## 基本語法 ``` 1. 定義暴露模塊: module.exports = value; exports.xxx = value; 2. 引入模塊: var module = require(模塊名或模塊路徑); ``` ## 創建項目結構 ``` |-modules |-module1.js |-module2.js |-module3.js |-app.js |-package.json { "name": "commonJS-node", "version": "1.0.0" } ``` ## 下載第三方模塊 ``` npm install uniq --save ``` ### 模塊化編碼 module1.js ``` module.exports = { foo() { console.log('moudle1 foo()') } } ``` module2.js ``` module.exports = function () { console.log('module2()') } ``` module3.js ``` exports.foo = function () { console.log('module3 foo()') } exports.bar = function () { console.log('module3 bar()') } ``` app.js ``` "use strict"; //引用模塊 let module1 = require('./modules/module1') let module2 = require('./modules/module2') let module3 = require('./modules/module3') let uniq = require('uniq') let fs = require('fs') //使用模塊 module1.foo() module2() module3.foo() module3.bar() console.log(uniq([1, 3, 1, 4, 3])) fs.readFile('app.js', function (error, data) { console.log(data.toString()) }) ``` ### 通過node運行app.js ``` 命令: node app.js 工具: 右鍵-->運行 ```
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