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Top 50 react interview questions in 2023

  1. What is React and why is it used?
  2. Can you explain the difference between a declarative and a imperative approach to programming?
  3. What is the virtual DOM and how does it work in React?
  4. Can you explain the difference between state and props in React?
  5. How do you pass data between different components in React?
  6. Can you explain the difference between a controlled and uncontrolled component in React?
  7. How do you handle events in React?
  8. Can you explain the difference between a functional and class-based component in React?
  9. What is the purpose of the React developer tools browser extension?
  10. Can you explain the difference between inline and external styles in React?
  11. How do you optimize performance in a React application?
  12. Can you explain the difference between a presentation and a container component in React?
  13. How do you implement routing in a React application?
  14. Can you explain the difference between a pure and impure function in React?
  15. How do you handle asynchronous tasks in a React application?
  16. Can you explain the difference between a stateful and stateless component in React?
  17. How do you implement localization in a React application?
  18. Can you explain the difference between a higher-order and a regular component in React?
  19. How do you implement server-side rendering in a React application?
  20. Can you explain the difference between a weak and a strong reference in React?
  21. How do you handle forms in a React application?
  22. Can you explain the difference between a static and a dynamic component in React?
  23. How do you handle errors in a React application?
  24. Can you explain the difference between a synthetic and a native event in React?
  25. How do you implement animations in a React application?
  26. Can you explain the difference between a memoized and a non-memoized component in React?
  27. How do you implement drag-and-drop functionality in a React application?
  28. Can you explain the difference between a presentational and a smart component in React?
  29. How do you handle accessibility in a React application?
  30. Can you explain the difference between a context and a prop in React?
  31. How do you implement offline functionality in a React application?
  32. Can you explain the difference between a shallow and a deep rendering in React?
  33. How do you implement real-time updates in a React application?
  34. Can you explain the difference between a static and a dynamic query in React?
  35. How do you implement pagination in a React application?
  36. Can you explain the difference between a container and a leaf component in React?
  37. How do you implement a search feature in a React application?
  38. Can you explain the difference between a synchronous and an asynchronous action in React?
  39. How do you implement a sorting feature in a React application?
  40. Can you explain the difference between a monolithic and a modular architecture in React?
  41. How do you implement a filtering feature in a React application?
  42. Can you explain the difference between a one-way and a two-way binding in React?
  43. How do you implement a mapping feature in a React application?
  44. Can you explain the difference between a middleware and a store enhancer in React?
  45. How do you implement a debouncing feature in a React application?
  46. Can you explain the difference between a mutable and an immutable object in React?
  47. How do you implement a throttling feature in a react js

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