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 what is CSS-in-JS pattern?

352

What is the difference between super() and super(props)?

402

Is it possible in React to call the Child method from Parent?

355

Can a developer create animations in React?

381

How can I make an AJAX call?

397

What is React.PropTypes?

401

Name two types of React component?

383

What are Props in react js?

380

What a setState is doing?

427

What is the difference between a function in setState or passing an object?

332

Can you force a React component to rerender without calling setState?

340

What is Redux Thunk used for?

364

Difference between constructor and getInitialState ?

356

Do you need to use ES6 (+) with React?

380

What is React State?

417

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Un-Answered Questions { React.js }

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

382

How to enable production mode in react?

419

Explain the use of ‘key’ in react list

370

What is the significance of refs in react?

332

How do you apply vendor prefixes to inline styles in react?

446

What is the difference between setstate() and forceupdate()?

337

What are controlled and uncontrolled components in React?

316

What is React.createElement?

371

What is refs?

448

What is the difference between stateless and stateful component?

381

Why is react so popular?

304

What is React?

335

How it is different from other front end language?

304

What is the difference between stateful and stateless components.

414

How will be you able to handle more action using redux?

346

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