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React Interview Questions | FineFrontend

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React

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React interview questions

Components, hooks, rendering, state, and performance patterns.

20 of 37 questions loaded

01Question 1: What is React?

02Question 2: Why do developers use React?

03Question 3: What is JSX?

04Question 4: What is a React component?

05Question 5: What is the difference between a component and an element?

06Question 6: What are props in React?

07Question 7: What is state in React?

08Question 8: What is the difference between props and state?

09Question 9: What is one-way data flow?

10Question 10: What is the virtual DOM?

11Question 11: How do you render a list in React?

12Question 12: Why does React need keys in lists?

13Question 13: What is conditional rendering?

14Question 14: What is a fragment in React?

15Question 15: What does useState do?