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 difference between function based component and class based component?

399

What can you do if the expression contains more than one line?

322

Why are browsers unable to read jsx?

371

What is the difference between stateless and stateful component?

391

What are the key benefits of reactjs development?

372

How to install react js on your local machine?

410

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

371

What is the component lifecycle in reactjs?

392

What is the difference between element and component?

522

What is flux?

327

Is it possible to use the word class in jsx?

296

How arrow functions are used?

329

What is import in react?

367

In what cases would you use a class component over a functional component?

311

What are class based component?

338

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Un-Answered Questions { React.js }

What do you understand with the term polling?

368

What is the main difference between createElement and cloneElment?

372

What is the purpose of push() and replace() methods of history?

391

What is the purpose of callback function as an argument of setstate()?

399

What is Context in React?

337

Please explain step by step approach on how to setup environment for reactjs?

332

Explain the purpose of render() in react.

351

Explain the components of Redux?

382

What are children prop?

313

Is setState() is async? Why is setState() in React Async instead of Sync?

370

What are refs in react and why are they important?

334

What are the differentiate between stateful and stateless components?

399

Explain dom diffing?

347

List some features of reactjs?

310

What is component in reactjs?

433

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