React Developer Interview Questions

3,478 react developer interview questions shared by candidates

how to implement a Vehicle class extending a Car class in JavaScript. The child class will inherit and access methods and properties from the parent. create In js clicking a button adds new rows with an input box and a button CSS specificity es6 classes,js oops concepts create generic functions how will write test case for api calls, hooks
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Senior React Developer

Interviewed at Publicis Sapient

3.4
Dec 28, 2024

how to implement a Vehicle class extending a Car class in JavaScript. The child class will inherit and access methods and properties from the parent. create In js clicking a button adds new rows with an input box and a button CSS specificity es6 classes,js oops concepts create generic functions how will write test case for api calls, hooks

What are your strengths and weaknesses? Can you explain the difference between a stack and a queue? How do you handle conflict in a team? Have you worked on any open-source projects? Can you tell us about them? What is your experience with agile methodologies? Can you describe a challenging project that you worked on in the past? How did you overcome the challenges? Why do you want to work for Wipro?
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React Developer

Interviewed at Wipro

3.6
Apr 18, 2023

What are your strengths and weaknesses? Can you explain the difference between a stack and a queue? How do you handle conflict in a team? Have you worked on any open-source projects? Can you tell us about them? What is your experience with agile methodologies? Can you describe a challenging project that you worked on in the past? How did you overcome the challenges? Why do you want to work for Wipro?

React.js, TypeScript, JavaScript, GraphQL - What is pureComponent ? - lifecycle methods - hooks - diff between useEffect & useLayoutEffect - portals - how do you make API calls - refs in React, when are they used ? - error handling - what is prop drilling ? - difference b/w createElement() & cloneElement - React Router Authentication & Authorization - how do you handle browser incompatibilities GraphQL: - what are benefits of using GraphQL - GraphQL queries & mutation - multiple queries in one request - REST API request methods GET, POST, PUT, PATCH, DELETE - error handling TypeScript - getter & setters - generics in TS - declare in TS, namespace - classes in TS - assert in TS
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Senior Frontend Developer-React JS

Interviewed at Firstsource Solutions

4.1
Jul 25, 2023

React.js, TypeScript, JavaScript, GraphQL - What is pureComponent ? - lifecycle methods - hooks - diff between useEffect & useLayoutEffect - portals - how do you make API calls - refs in React, when are they used ? - error handling - what is prop drilling ? - difference b/w createElement() & cloneElement - React Router Authentication & Authorization - how do you handle browser incompatibilities GraphQL: - what are benefits of using GraphQL - GraphQL queries & mutation - multiple queries in one request - REST API request methods GET, POST, PUT, PATCH, DELETE - error handling TypeScript - getter & setters - generics in TS - declare in TS, namespace - classes in TS - assert in TS

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