React is a JavaScript library for building user interfaces. It allows developers to create reusable UI components and manage the state of their applications efficiently.

React works by using a virtual DOM to efficiently update and render components. When the state of a component changes, React re-renders only the affected parts of the UI.

React hooks are functions that let you use state and other React features in functional components. Examples include useState, useEffect, and useContext.

JSX is a syntax extension for JavaScript that allows you to write HTML-like code in your React components. It makes the code more readable and easier to write.