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?

442

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

423

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

464

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

482

How events are different in react?

470

What is react intl?

655

What are the three principles that redux follows?

427

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

402

What is the significance of keys in react?

590

What are pure components?

386

What is arrow function in react?

472

How react router is different from history library?

549

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

406

Differentiate between stateful and stateless components?

412

What were the major problems with mvc framework?

504

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Un-Answered Questions { React.js }

What is Babel in React js?

425

How to set up routing in reactjs. Explain with the help of step by step approach?

381

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

406

What do you know about controlled and uncontrolled components?

386

Explain lifecycle of a react component?

445

Why do we need a router in react?

445

What is flux concept in reactjs?

435

What is Redux Thunk used for?

437

What are the feature of reactjs?

603

What is the difference between flux vs mvc?

477

How do you this in constructor?

419

What is the component lifecycle in reactjs?

482

What are the differences in between real dom and virtual dom?

512

Explain the advantages of redux?

386

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

546

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