React Interview Question

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React Topics

1. React Context
2. Hooks:
   • useState
   • useEffect
   • useReducer
3. Basics of React Router:
   • Understanding React Router v6
   • How does React handle routing and what are some popular routing libraries for React?
4. Memoization Hooks:
   • useMemo
   • useCallback
5. Redux:
   • Setting up Redux
   • Implementing Redux Dev Toolkit
6. API Integration
7. Peer Dependencies:
   • What are they?

Advanced Questions

1. What is a pure function?

2. What is a Higher-Order Component (HOC)?

   • Examples of HOCs you have used.
   • Can you explain the concept of Higher Order Components (HOC) in React?

3. What is render props?

4. Custom Hooks:

   • Difference between custom hooks, functions, and components.

5. How does the Virtual DOM work in React?

6. What is reconciliation in React?

7. Controlled vs. Uncontrolled Components:

   • Which one is better and why?

8. What is memoization and how can it be achieved in React?

9. How do you handle asynchronous data loading in React?

   • What is a async in React?

10. Code Splitting in React:

    • How to achieve it?

11. What is package manager?

    • What is NPM?
    • Can we add multiple version of NPM on system?
    • Can we implement React without NPM?

12. React Props:

    • What is the children prop?

13. React Portals:

    • What are they and why are they useful?

14. Performance Optimization in React:

    • Common techniques.

15. Refs in React:

    • How to create refs.

16. Spread Operator (...) in React:

    • What do these three dots do?

17. Client Side Vs Server Side

    • What is the difference between server-side rendering and client-side rendering in React?

18. React Routers

    • How does React handle routing and what are some popular routing libraries for React?

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