43 interview questions on React ⚛️ for developers (2024)

26 votes5166 runs0 comment

Victor Sabatierat Jan 4, 2022

20 votes5172 runs1 comment

Victor Sabatierat Jan 4, 2022

13 votes5257 runs0 comment

12 votes3955 runs1 comment

10 votes5217 runs1 comment

9 votes3455 runs1 comment

Vincent Cotroat Jan 4, 2022

8 votes2964 runs0 comment

Vincent Cotroat Jan 4, 2022

7 votes3752 runs0 comment

Clément DEVOSat Jan 4, 2022

7 votes1410 runs0 comment

6 votes3934 runs1 comment

6 votes3660 runs1 comment

Vincent Cotroat Jan 4, 2022

6 votes2708 runs0 comment

6 votes1188 runs2 comments

5 votes3868 runs1 comment

5 votes997 runs1 comment

3 votes2606 runs2 comments

Vincent Cotroat Jan 4, 2022

3 votes639 runs0 comment

3 votes585 runs0 comment

Emilieat May 4, 2023

2 votes1602 runs0 comment

concurrent mode

2 votes1392 runs0 comment

functional components

Philippeat Mar 9, 2022

43 interview questions on React ⚛️for developers (2024)

Test your technical skills before an interview of React ⚛️ with 43 corrected questions. Beginner, Intermediate or Expert level.

43 interview questions on React ⚛️for developers (2024)

Test your technical skills before an interview of React ⚛️ with 43 corrected questions. Beginner, Intermediate or Expert level.

Write the non-JSX equivalent of the following code:

Write the missing code to render the children of the UserProfile component.

Write a React component as a function

Call a function on the first render of a React component

Save the state used to display the selected page in a React component.

UseState and useEffect in React

Write a React component that displays the sum of two numbers

Which statement(s) are true about hooks?

Write a React component that updates the document title with each click and resets to 'React App' when the component unmounts.

Find the issue with this React code:

Write a React component that displays the number 2

How to optimize a React component to improve its performance?

Use the `useContext` hook to render a button with a dark theme.

Use useCallback to optimize rendering in React

Change the style of a button using the `useState` hook in React.

What are the advantages of SSR(server side rendering)?

Which of these concepts can define React?

Render a list of string from an array in React

What is the Concurrent Mode feature introduced in React?

Explain how the `memo` hook works in React