Modern JavaScript and ES6+ Features

Modern JavaScript introduces powerful features and syntax that simplify code and enhance readability. These features are essential for working with React, where modular code, safe property access, and concise conditional rendering are frequent practices.

Modules and the import/export syntax

Modules allow us to organize code into smaller, reusable files. Instead of managing everything in a single file, we can split functionality into modules and use import and export statements to share them across the application. This is a key practice in modern JavaScript development, supported by all major JavaScript frameworks and libraries, including React. By using modules, we can create cleaner, more maintainable, and scalable codebases, making collaboration and debugging much easier.

Exporting and importing modules

Modules allow functions, variables, or classes to be exported from one file and imported into another for reuse. In JavaScript, we have three types of exports: named exports, default exports, and mixed exports.

Named exports