43 interview questions on React ⚛️ for developers (2024)

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Victor Sabatierat Jan 4, 2022

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Victor Sabatierat Jan 4, 2022

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Vincent Cotroat Jan 4, 2022

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Vincent Cotroat Jan 4, 2022

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Clément DEVOSat Jan 4, 2022

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Vincent Cotroat Jan 4, 2022

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Vincent Cotroat Jan 4, 2022

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Emilieat May 4, 2023

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concurrent mode

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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