React

What is React?

React is a JavaScript library created by Meta for building user interfaces from reusable components, used by Facebook, Netflix, Airbnb and a huge share of modern web apps.

Its component model and virtual DOM let developers build complex, fast, interactive UIs while keeping code organized and maintainable.

Why employers value it

React dominates front-end job postings. Employers value it because component-based UIs scale across large teams and codebases, and the massive ecosystem (Next.js, React Native) lets the same mental model power websites and mobile apps.

How to learn it

Be comfortable with JavaScript first, then learn components, props and state. Modern React is built around hooks (useState, useEffect), so focus there rather than older class components.

• Get solid with JavaScript (ES6+) before starting React
• Learn components, props, JSX and state management
• Master hooks: useState, useEffect and custom hooks
• Build a real app and add routing, data fetching and a framework like Next.js

Careers that use it

React is core to front-end developers, full-stack developers and React Native mobile developers. It is one of the most in-demand specific technologies in web engineering.

Market outlook

React has been the leading front-end library for years and continues to evolve with server components and frameworks like Next.js, keeping demand high and durable.