📘named export

JS ⟩ module ⟩ ES ⟩ export ⟩ named export

// export variables declared elsewhere
export { f1, f2 };    

// export declarations
export let a = Math.sqrt(2);
export function f() { ... };

💈 範例

• replit：named exports

// math.js

// ⭐️ named exports
export function add(a, b) { return a + b }
export function subtract(a, b) { return a - b }
export function multiply(a, b) { return a * b }
export function divide(a, b) { return a / b }

📁 index.js

// ⭐️ import "named exports"
import { add, subtract, multiply, divide } from './math.js';

[
    add(1, 2),         // 3
    subtract(1, 2),    // -1
    multiply(1, 2),    // 2
    divide(1, 2),      // 0.5
    
].forEach(x => console.log(x));

👥 相關

• ⛔ SyntaxError：Named export 'xxx' not found❗

📗 參考

• MakeUseOf ⟩ How to Import and Export Functions in JavaScript

📘 手冊

• export