React Interview Questions
Check out 30 of the most common React interview questions and take an AI-powered practice interview
What is React and how does it work?
How do you create components in React?
What is the virtual DOM in React?
How do you handle events in React?
What are props and how do you use them in React?
How do you manage state in React components?
What is the component lifecycle in React?
How do you style components in React?
What are hooks/directives in React?
How do you handle forms in React?
What is conditional rendering in React?
How do you work with lists and keys in React?
How do you manage globalThis state in React?
What is routing in React applications?
How do you optimize React performance?
What is server-side rendering in React?
How do you handle API calls in React?
What is code splitting in React?
How do you test React applications?
What are custom hooks/directives in React?
How do you handle authentication in React?
What is lazy loading in React?
How do you manage side effects in React?
What are performance optimization techniques in React?
How do you handle error boundaries in React?
How do you implement micro-frontends with React?
What are advanced performance patterns in React?
How do you handle complex state machines in React?
What is the internal architecture of React?
How do you build custom renderers in React?
Frequently Asked Questions
What is React used for?
React is widely used for building modern, interactive user interfaces and single-page applications. It's valued for its performance, reliability, and extensive ecosystem.
How long does it take to learn React?
Learning React basics typically takes 1-3 months of dedicated study. Achieving proficiency requires 6-12 months of practice and real-world projects. Mastery comes with years of experience and continuous learning.
What are the job prospects for React developers?
React developers are in high demand across industries. With strong React skills, you can pursue roles in frontend development, UI/UX engineering, with competitive salaries ranging from ₹6-22 LPA.
What prerequisites are needed for learning React?
HTML, CSS, and JavaScript fundamentals are helpful prerequisites for learning React.
Which companies use React?
Major companies using React include Google, Amazon, Microsoft, Meta, Netflix, and many more. React is adopted across startups to enterprise organizations.
Introduction
Preparing for a React frontend developer interview? React has become essential for building modern, interactive web applications that users love.
React is widely adopted by companies building scalable, performant user interfaces. Understanding its core concepts, patterns, and best practices is key to landing your dream frontend role.
We've compiled the most frequently asked React interview questions, covering component architecture, state management, performance optimization, and more.
Whether you're a beginner or experienced developer, this guide will help you master React interview questions and showcase your frontend expertise.
