React.js, often shortened to React, is a powerful and popular JavaScript library for building user interfaces (UIs) for web applications. Here’s a breakdown of what React offers:
Core Concepts:
- Components: React applications are built using reusable components. These components are like Lego bricks – you can combine smaller components to create complex UIs. Each component has its own logic and controls how it appears on the screen.
- JSX: React uses JSX, a syntax extension for JavaScript that allows you to write HTML-like structures within your JavaScript code. This makes it easier to visualize and build UI elements.