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 high-level component lifecycle in react.js?

418

What are state and props in reactjs? What is the difference between the two? Give a proper example of using state and props to elaborate the concept with complete source code?

368

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

347

What are pure functional components?

339

What is the difference between angularjs vs react.js?

445

What is the difference between an element and a component in react?

396

How to use events in reactjs? Give an example of using events?

431

Can you explain about the standard javascript toolchain, transpilation, jsx?

336

How to apply validation on props in reactjs? Apply validation in previously developed example in above question?

351

What is reactjs-jsx? What are the advantages of using jsx?

365

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

362

How would you create higher order components (hocs) in react.js?

324

Explain about the standard javascript toolchain, transpilation, jsx?

338

What is the significance of refs in react?

339

What is flux in react.js?

431

Post New React.js Questions

Un-Answered Questions { React.js }

Show how the data flows through redux?

332

Explain dom diffing?

347

What are refs used for in React?

348

What are the popular packages for animation?

417

How state is useful for react?

360

Explain the term reconciliation?

321

How is redux different from flux?

374

what are the limitations of react?

496

What is controllable component in reactjs?

366

How arrow function is used in react?

432

Explain the term stateless components

325

What are the advantages of using jsx?

379

How to dispatch the data in-store?

386

How react router and its techniques differ from more traditional javascript routers like backbone’s router?

518

What is the difference between stateful and stateless components.

425

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