React (also known as React.js or ReactJS) is a popular open-source JavaScript library used for building dynamic and responsive user interfaces based on reusable components. It is maintained by Meta (formerly Facebook) and a large community of developers.
React is widely used to develop single-page applications (SPA), mobile apps (with React Native), or server-rendered apps (with frameworks like Next.js). While React focuses solely on the view layer, it can be extended with additional libraries for routing, state management, and other client-side features.
🔧 Core benefits: