React Developer Interview Questions

3,476 react developer interview questions shared by candidates

1. How you maintain the centralize data storage in react ? 2. Write an array of numbers, print the unique values of array 3. Write a program to Sum all the numbers of array, 4. How to fetch the values from the store 5. Tell me about some hooks 6. #id_abc{color:yellow } .abc{color: red} div{color:blue} Which CSS will be applicable for div. <div id="id_abc" class="abc">Test</div> 7. One Javascript question on button click. 8. Error boundaries in component.
Apr 21, 2022

1. How you maintain the centralize data storage in react ? 2. Write an array of numbers, print the unique values of array 3. Write a program to Sum all the numbers of array, 4. How to fetch the values from the store 5. Tell me about some hooks 6. #id_abc{color:yellow } .abc{color: red} div{color:blue} Which CSS will be applicable for div. <div id="id_abc" class="abc">Test</div> 7. One Javascript question on button click. 8. Error boundaries in component.

Basic questions included: introduction, overall experience, and project count. Technical/ Theoretical Questions included: •Fundamentals of React Native concepts. •What is a Virtual DOM? •What does HOC (Higher Order Component) stand for, and how is it used? •Differentiate between state and prop. •Explain the process of updating the state in functional components. •When and why is SafeAreaView used? •Discuss storage mechanisms in React Native. •What is the role of Fiber in React Native? •Elaborate on the Interaction Manager's function. Coding question based on Array: •Write a JavaScript program for the intersections of an Array:- Inputs: A = [3, 4, 5, 6, 4, 5]; B = [3, 5, 4, 6, 9, 11, 12]; Output: C = [3, 4, 5, 6]
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React Native Developer

Interviewed at SquareBoat

4
Sep 21, 2023

Basic questions included: introduction, overall experience, and project count. Technical/ Theoretical Questions included: •Fundamentals of React Native concepts. •What is a Virtual DOM? •What does HOC (Higher Order Component) stand for, and how is it used? •Differentiate between state and prop. •Explain the process of updating the state in functional components. •When and why is SafeAreaView used? •Discuss storage mechanisms in React Native. •What is the role of Fiber in React Native? •Elaborate on the Interaction Manager's function. Coding question based on Array: •Write a JavaScript program for the intersections of an Array:- Inputs: A = [3, 4, 5, 6, 4, 5]; B = [3, 5, 4, 6, 9, 11, 12]; Output: C = [3, 4, 5, 6]

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