Modular JavaScript
Modular JavaScript is a software design pattern that involves breaking down JavaScript code into independent, reusable modules, each with a specific functionality. It promotes separation of concerns, improves code organization, and enhances maintainability by allowing developers to import and export functionality between files. This approach is fundamental in modern web development, especially with tools like ES6 modules, CommonJS, or AMD.
Developers should learn Modular JavaScript to build scalable and maintainable applications, as it reduces code duplication and makes debugging easier by isolating functionality. It is essential for large-scale projects, such as single-page applications (SPAs) or complex web apps, where managing dependencies and code structure is critical. Using modular patterns like ES6 modules also aligns with modern JavaScript standards and tooling like Webpack or Rollup.