Skip to contentSkip to footer

React Js Developer Interview Questions

Salaries
Interviews

538 react js developer interview questions shared by candidates

class and functional component , state and props diff, react vs any other platform , Github commit , performance optimization technique , coding best practices, Hooks , lifecycle methods , fetching data called in which method and why??
avatar

React Js Developer

Interviewed at Amdocs

3.7★
Feb 13, 2021

class and functional component , state and props diff, react vs any other platform , Github commit , performance optimization technique , coding best practices, Hooks , lifecycle methods , fetching data called in which method and why??

1. Tell me about yourself. 2. Lifecycle method. 3. How to connect to Redux store 4. We have 4 APIs being called. Display as soon as we get 1 API by using promises. 5. Virtual DOM 6. Promise 7. Hooks 8. useContext 9. Diff between useState and useReducer. 10. static getDerivedStatefromProps() - function? 11. action, store, dispatch in Redux 12. where does props get updated in lifecycle? 13. We have an object and we do not want to change the value of its contents. What do we do?
avatar

React Js Developer

Interviewed at Cognizant

3.5★
Jul 21, 2021

1. Tell me about yourself. 2. Lifecycle method. 3. How to connect to Redux store 4. We have 4 APIs being called. Display as soon as we get 1 API by using promises. 5. Virtual DOM 6. Promise 7. Hooks 8. useContext 9. Diff between useState and useReducer. 10. static getDerivedStatefromProps() - function? 11. action, store, dispatch in Redux 12. where does props get updated in lifecycle? 13. We have an object and we do not want to change the value of its contents. What do we do?

Viewing 141 - 150 interview questions

Glassdoor has 538 interview questions and reports from React js developer interviews. Prepare for your interview. Get hired. Love your job.