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 the main difference between createElement and cloneElment?

413

What is the main goal of react fiber?

360

Why do you need to use props.children?

361

What are reacted portals?

374

Explain the meaning of Mounting and Demounting

363

What is the purpose of using bindActionsCreators?

383

How can a browser read JSX file?

387

What is the reduction?

330

What is REFS in React

356

What is the use of Webpack?

369

State the difference between getIntialState() and constructor()?

355

What is react fiber?

399

How to pass a parameter to an event handler or callback?

421

Can you update the values of props?

384

Explain the term reconciliation?

358

Post New React.js Questions

Un-Answered Questions { React.js }

How to set state with a dynamic key name?

423

What are controlled components?

362

What are reacted portals?

374

What is a state in reactjs and how is it used?

397

What is the use of arrow function in reactjs?

402

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

448

How different is react’s es6 syntax when compared to es5?

444

What is forceUpdate()?

415

How do you embed two components in one component?

336

Give me two most significant drawbacks of React?

382

What are fragments?

462

Can you update the values of props?

384

Difference between constructor and getInitialState ?

403

How arrow function is used in react?

458

Explain yield catchphrase in JavaScript

391

For More Un-Answered { React.js } Questions Click Here