React Js Developer Interview Questions

React JS

Interviewed at Cognizant

3.6★

Jul 7, 2021

what are Component lifecycle in react

React Js Developer

Interviewed at Cognizant

3.6★

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?

React Js Developer

Interviewed at Antino Labs

3.8★

Sep 30, 2022

promise, hoosting, reverse, hooks, api call etc

React Js Developer

Interviewed at QBurst

4.1★

Apr 24, 2022

Currying in javascript, css prepocessors

React Js Developer

Interviewed at Infogain

3.6★

May 23, 2022

explain NgRX in detail, Observable, services

Frontend (React Js)/Fullstack Developer (M/F/D)

Interviewed at Westwing Group SE

2.8★

Oct 8, 2021

Which react hooks did you use?

Junior React JS Developer

Interviewed at Walstar Technologies

4.4★

Oct 22, 2021

Program- write program to merge 2 arrays write program to split text from 'O', for Hello World! syntax for async await

Junior React JS Developer

Interviewed at Walstar Technologies

4.4★

Oct 22, 2021

Javascript- basics of Hoisting & In detail about ES6 what is template literal what is arrow function try catch method

Junior React JS Developer

Interviewed at Walstar Technologies

4.4★

Oct 22, 2021

what are semantics tags in html

React Js Developer

Interviewed at Accenture

3.7★

Oct 14, 2021

Redux, Hooks, React features, Js concepts like hoisting, 1-2 written coding questions