JavaScript Modules and Modern Practices

Intermediate

📦 Modular JavaScript & ✅ Best Practices

As JavaScript applications grow, modular code becomes essential for maintainability. ES6 modules enable developers to split code into reusable pieces.

🔁 Export and Import Syntax

// math.js
export function add(a, b) {
  return a + b;
}

// main.js
import { add } from './math.js';
console.log(add(2, 3)); // Output: 5

🧠 Modern JavaScript Best Practices

  • 🧾 Using let and const for variable declarations
  • 🛡️ Employing strict mode ('use strict') for safer code
  • 🔄 Utilizing transpilers like Babel to ensure compatibility
  • 🧱 Adopting frameworks and libraries for structured development

📈 Keeping code modular and adhering to best practices leads to scalable and robust applications.