Learn React

React is a JavaScript library for building user interfaces. This Codecademy course introduces the core ideas you need to create interactive web pages. You start by understanding key React concepts such as JSX, props, and state. JSX lets you write HTML-like syntax inside JavaScript, while props pass data between components. State lets a component remember information and update the UI when it changes.

The course moves from static components to interactive ones. You learn how components interact by passing props and using hooks. Hooks such as useState and useEffect let you manage state and side effects directly in function components. You also explore React programming patterns, including how to structure reusable code and handle forms.

By the end you can build a small React application that renders a list, handles user input, and updates the screen without a page refresh. The skills you gain map directly to front‑end web development roles. The course takes 13 hours and is self‑paced, so you can spread the work across your schedule.

This course is free and open to anyone who knows basic HTML and JavaScript. It does not cover React Router or mobile development with React Native; those topics appear in later courses. Learners who want a structured path toward full‑stack work may also consider the alternatives listed on the React courses hub.