Featured image of post 【JavaScript 模組】匯出模組、匯出部分函式、匯出函式並重新命名

【JavaScript 模組】匯出模組、匯出部分函式、匯出函式並重新命名

【JavaScript 模組】匯出模組、匯出部分函式、匯出函式並重新命名

Photo by Mohammad Rahmani on Unsplash

匯出模組

// math.js
const add = (a, b) => a + b;
const subtract = (a, b) => a - b;
const multiply = (a, b) => a * b;
const divide = (a, b) => a / b;

module.exports = {add, subtract, multiply, divide}

匯出整個模組

// test.js
const math = require('./math');

console.log(math.add(3,5));

匯出部分函式

// test.js
const {add, subtract} = require('./math');

console.log(add(3,5));
console.log(subtract(3,5));

匯出函式並重新命名

// 將 v4 函式重新命名為 uuid
const { v4 : uuid } = require('uuid');

console.log(uuid());

匯入模組

import {myModule} from 'myModule'
import {Method1, Method2} from 'myModule'

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