React.js Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

React.js Interview Questions

Questions Answers Views Company eMail

What is an event in react?

403

What are the lifecycle methods going to be deprecated in react v16?

391

How do you tell react to build in production mode and what will that do?

427

How to use https instead of http in create-react-app?

456

How events are different in react?

435

What is react intl?

604

What are the three principles that redux follows?

398

What do you understand by “single source of truth”?

373

What is the significance of keys in react?

553

What are pure components?

349

What is arrow function in react?

438

How react router is different from history library?

509

Is it possible to use async/await in plain react?

372

Differentiate between stateful and stateless components?

372

What were the major problems with mvc framework?

475

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Un-Answered Questions { React.js }

What is Reactjs?

370

What are the components of redux.

372

What is the difference between flux vs mvc?

447

How to use events in reactjs? Give an example of using events?

479

Why is a component constructor called only once?

408

List some features of reactjs?

353

Explain flux?

450

What are refs used for in React?

377

How to install react js on your local machine?

449

What is uncontrollable component in reactjs?

404

What do you understand by virtual dom? Explain its working.

331

What are state and props in reactjs? What is the difference between the two?

431

What are the life cycle of reactjs?

386

Explain the term synthetic events?

538

What is the use of Webpack?

372

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