JavaScript Modules 101: import & export Without Confusion

As JavaScript project grows managing code become more important than just writing it. Modules provide a simple way to organize, reuse and maintain code efficiently. In this blog we will cover : Why modules are needed Exporting functions or values Importing modules Default vs named exports Benefits of modular code Modules Before modules JavaScript don't have a proper way to organize code. Everything lived in global scope which often caused conflicts and messy code. Developers used tricks like global variables or IFFE to manage this. // Global variable (problem: can be overwritten) var count = 0; function increment() { count++; } // IIFE (used to avoid global pollution) (function(){ var count = 0 function increment(){ count++ console.log(count()) increment() })() But these were just workarounds, not a real solution. Here comes the modules A module is simply a separate piece of code with its own scope. It helps to keep the code organized , reusable and avoid conflicts that used to happen