<ul><li>React.js is an open-source JavaScript library for building user interfaces (UIs). It follows a component-based architecture, where UI is divided into reusable components.</li><li>React uses a declarative approach, simplifying debugging and reducing the need for manual DOM manipulation. It introduces the Virtual DOM concept for faster updates and rendering.</li><li>JSX syntax allows developers to write HTML-like code within JavaScript, making the code more readable.</li><li>React enforces unidirectional data flow and provides powerful tools in its ecosystem, including React Router, Redux, and Next.js.</li></ul>

React.js Explained: A Comprehensive Guide to Building Modern Web Applications

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