Most Asked React JS Interview Questions 🔥
Basic Questions
1. What is React?
2. What are the advantages of using React?
3. What is JSX?
4. What is the virtual DOM?
5. What are components in React?
State and Props
6. What is the difference between state and props?
7. How do you create a React component?
8. How do you handle events in React?
9. What is the purpose of the setState function?
10. What are the lifecycle methods of a React component?
Advanced Topics
11. What are hooks in React?
12. What is the useState hook?
13. What is the useEffect hook?
14. What is the difference between controlled and uncontrolled components?
15. What is Redux, and how does it relate to React?
Miscellaneous
16. What are Higher-Order Components (HOCs)?
17. What is the purpose of React Router?
18. What is Context API?
19. How do you optimize performance in a React application?
20. What are keys in React, and why are they important?
Code Questions
21. How do you conditionally render components in React?
22. How do you handle forms in React?
23. What is the difference between useCallback and useMemo?
24. How do you fetch data from an API in React?
25. How do you share state between components in React?
