JavaScript Modules: Import and Export Explained

JavaScript modules, using the import and export keywords, allow developers to break code into smaller, reusable files, promoting better organisation, maintainability, and encapsulation. This system, introduced in ES6, is the standard for modern JavaScript development. 🚧 Why JavaScript Modules Are Needed: As JavaScript applications grow, writing all your code in a single file (or loosely connected files) quickly leads to serious problems. Modules were introduced to solve these issues and bring structure to your code base. Global scope pollution: JavaScript applications without modules often suffer from global scope pollution, where variables and functions are defined in the global space and become accessible from anywhere in the code. This creates a high risk of name collisions, especially in larger projects where multiple developers are working simultaneously. 💥 Example var user = " Alice " ; var user = " Bob " ; console . log ( user ); Hard-to-maintain code: Another major issue is har