React Native is an open-source UI software framework web developers typically use to develop applications for Android, Android TV, iOS, macOS and Windows using only JavaScript. Preparing for an information technology job interview requires you to have an understanding of computer software applications and related business language. Learning React Native interview questions can help increase your chances of being hired for the job. In this article, Pritish Kumar Halder review possible questions and answers the interviewer may ask in your interview.

16 React Native interview questions

Here are 16 potential React Native interview questions that your interviewer may ask you during a programming interview:

1. Describe React Native to someone who has never programmed before.

The interviewer can ask this question to assess your comprehension of React Native and your ability to convey it outside of your sector. Showcase your knowledge by defining it and explaining how to apply it in the workplace. Effectively demonstrating this knowledge can help employers better understand how skilled and knowledgeable you are in the industry.

Sample answer: “React Native is an open-source JavaScript framework. It allows you to create a truly native mobile application for the iOS and Android operating systems. It creates a mobile application entirely in JavaScript. It is similar to React, except that it makes use of native components rather than web components as building blocks. It is cross-platform, which means that you can write code only once and it can operate on any platform.”

2. What are some frameworks that are comparable to React?

The interviewer is typically attempting to find out your knowledge of related programming topics by asking this question. Your response can show your familiarity with other frameworks and their relationship to React.

Sample answer: “Although Angular and Vue are structurally and functionally identical, Angular operates as a framework that aids in the building of single-page apps, while Vue is used to create sophisticated single-page applications. Vue’s efficient design enables it to swiftly construct interactive interfaces.”

3. What is Redux, and how is it constructed?

Your interviewer may be attempting to find out your familiarity with this sort of library by asking this question. Your response can go beyond a simple explanation of Redux and describe how it interacts with React and other industry-related concepts.

Sample answer: “Redux is a popular front-end development library. It has no dependencies and is frequently used to assist in the development of JavaScript apps. Three components comprise Redux: actions, reducers, and the store.”

4. When can you use a PureComponent instead of a component?

The interviewer can ask you to describe an instance in which you may use a PureComponent. Your response can demonstrate your comprehension of this concept and how you can use it in React.

Sample answer: “You can use a PureComponent when you want to modify objects, as PureComponents, unlike conventional components, can finish the ‘ShouldComponentUpdate’ function for you.”

5. Can you try to describe the steps in the lifetime of a React component?

This question enables the interviewer to pursue the component’s lifecycle stages in further detail. Your response can refer to them as techniques and identify each one individually.

Sample answer: “Multiple methods can be applied to a React component before or during the execution of an action. Mounting, rendering, updating and unmounting are all methods that are relevant, as are APIs, class and instance attributes.”

6. How do you distinguish between state and props?

The interviewer is usually requesting a comparison of these two concepts by asking this question. Your response can define them and point out the ways in which they vary.

Sample answer: “You can regard state as the essential element that defines a component’s functions and characteristics inside React, whereas props, or properties, transmit from a parent component to a PureComponent and are usually immutable.”

7. What are some of the advantages of React?

This question enables the interviewer to assess your knowledge of React and how it benefits web development.

Sample answer: “Among the benefits of adopting React is that it aids in search engine optimisation, and its structure facilitates maintenance and readability. Additionally, it enables web developers to code in Java with little to no difficulty.”

8. How about some drawbacks?

Through this question, the interviewer typically wants you to consider and express the disadvantages of React and why it is not always the optimal framework to use.

Sample answer: “Some shortcomings of React include its difficulty to learn, which results in a high learning curve for individuals in entry-level web development employment. Also, considerable modifications are necessary to integrate React with the MVC framework.”