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

React.js Interview Questions

Questions Answers Views Company eMail

How do you create an event in react?

422

How to add google analytics for react router?

416

Explain flux?

449

Why is switch keyword used in react router v4?

368

What is the significance of store in redux?

398

What is the purpose of render method of react-dom?

399

Why is a component constructor called only once?

407

Explain the role of reducer?

411

What is react router?

400

What are synthetic events in react?

407

What is jest?

431

How is redux different from flux?

404

What are the main features of react intl?

387

What do you know about controlled and uncontrolled components?

352

List some of the cases when you should use refs?

333

Post New React.js Questions

Un-Answered Questions { React.js }

List some features of reactjs?

352

What is Context?

375

What is the purpose of render() in react?

411

How are actions defined in redux?

444

Explain the significance of store in redux?

402

What are lifecycle hooks react?

450

What are reacted portals?

374

What are fragments?

462

What is react intl?

601

What is the difference between react components in es5 and es6?

397

What is low-level component lifecycle in react.js?

437

Explain the term stateless components

358

What is shouldcomponentupdate and when is used in react.js?

408

In which lifecycle event do you make ajax requests and why?

394

What is JSX?

356

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