Master React
Get Hired.

React is a JavaScript library for building user interfaces, created by Facebook (now Meta) in 2013 and open-sourced in the same year. The key word is 'library' — React deliberately solves one problem and solves it extremely well: how to build reusable UI components and efficiently update the DOM when application state changes. Everything else — routing, data fetching, state management, form handling, testing — is handled by the ecosystem of libraries built around React. This philosophy of doing one thing well and delegating the rest is both React's greatest strength and its steepest onboarding curve.

React introduced two ideas that changed frontend development permanently. First, the component model: UIs are built from isolated, composable, reusable pieces of code that combine data (props) and behavior (state) into a single unit. Second, the declarative rendering model: instead of manually manipulating the DOM ('find element with id X and change its text to Y'), you describe what the UI should look like given the current state, and React figures out the minimal DOM changes needed. These two ideas — components and declarative rendering — are now universal across every modern frontend framework. Angular, Vue, Svelte, and Solid all implement variations of these ideas. Understanding React teaches you the foundation of all modern frontend development.

In India's developer market, React is the frontend skill with the widest applicability. Product companies building consumer apps (Swiggy, Zepto, Meesho), fintech platforms (Razorpay, Zerodha, Groww), SaaS companies building B2B tools (Freshworks, Chargebee, Postman), and even IT service companies with modern frontend practices all hire React developers. The global remote job market is even more skewed toward React — platforms like Toptal, Andela, and Arc.dev list React as the required skill in the majority of senior frontend and full-stack positions. In 2026, React knowledge is table stakes for any serious frontend developer role in India, and deep React knowledge — hooks, performance optimization, state management patterns, testing — is what differentiates a ₹8 LPA developer from a ₹25 LPA one.