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

React.js Interview Questions

Questions Answers Views Company eMail

Explain dom diffing?

384

what is the usage of refs and keys used in react?

445

Give me two most significant drawbacks of React?

382

State the difference between React JS and React Native

537

What are the major issues of using MVC architecture in React?

508

What is the Current Stable Version of React?

426

What is ‘create-react-app’?

386

Does React use HTML?

460

What is the use of ‘prop-types’ library?

452

What can be done when there is more than one line of expression?

488

What is Context?

375

What is the use of empty tags <> ?

389

What is the second argument that can optionally be passed to setState and what is its purpose?

512

Define the term Redux in React

408

How is react router different from conventional routing?

576

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Un-Answered Questions { React.js }

Explain what is CSS-in-JS pattern?

403

How do you create an event in react?

422

What are the difference between pros and state?

454

What a setState is doing?

498

Why is react better?

353

How React works? How Virtual-DOM works in React?

479

does reactjs use html?

358

What is Reactjs?

366

What are components in reactjs?

384

What are the features of react?

387

Why react js is faster?

380

Explain various flux elements including action, dispatcher, store and view. Give a simple practical example of installing and using flux in an application?

356

What is react intl?

601

Differentiate between stateful and stateless components?

371

What is the difference between state and props in react js?

443

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