React.js Mastery

From React basics to advanced patterns, hooks, state management, and Next.js.

Overview

A focused roadmap to master React.js for production applications and technical interviews. This roadmap covers the complete React ecosystem from core concepts and hooks through state management, testing, performance optimization, and the Next.js meta-framework. It is designed for both newcomers to React and experienced developers who want to fill knowledge gaps and prepare for interviews.

React is the most widely used frontend framework in the industry, powering applications at Meta, Airbnb, Netflix, Uber, Stripe, and thousands of other companies. Over 60% of frontend job listings mention React specifically, making it the highest-leverage framework to learn. Its component-based architecture and hooks system have influenced every other modern framework, so the patterns you learn here transfer broadly.

This roadmap differentiates itself by focusing on how React actually works under the hood, not just how to use it. Understanding the virtual DOM, reconciliation algorithm, fiber architecture, and rendering behavior gives you the ability to debug performance issues and answer advanced interview questions that stump developers who only learned React superficially. You will know not just what a hook does, but why it works, when it re-renders, and how to optimize it.

By the end of this roadmap, you will be able to build complex React applications with TypeScript, implement custom hooks for reusable logic, manage state effectively at any scale, write comprehensive tests, optimize rendering performance, and confidently discuss React internals in interviews.

Interview questions

Class components or functional components?
Do I need to learn Next.js?
How long does it take to learn React well enough for interviews?
Redux or something simpler?
What React concepts do interviewers test most?
Should I learn React with JavaScript or TypeScript?

React.js Mastery

Overview

Interview questions

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