React.js Interview Questions
Questions Answers Views Company eMail

Explain the significance of keys in react?

251

What is the difference between real dom and virtual dom.

277

Is reactjs a framework?

249

What is react js good for?

258

Which is best react or angular?

228

Which is better angular or react js?

264

Why react js is faster?

242

Why should I use react js?

232

Is react a mvc framework?

225

What is lazy loading react?

246

What are lifecycle hooks react?

303

Why is react better?

217

Why is react so popular?

231

Why vue js is better than react?

229


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Un-Answered Questions { React.js }

What is the difference between using constructor vs getInitialState in React?

278


What is the difference between a Presentational component and a Container component?

259


Name the different React lifecycle methods.

295


How to use forms in reactjs? Give an example of using forms in reactjs by developing a user registration form?

238


What is the use of React.Children.map(props.children, () => )?

247


How might react handle or restrict props to certain types, or require certain props to exist?

284


Explain flux?

299


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

290


What do you understand with the term polling?

264


Why do we need a router in react?

287


How React works? How Virtual-DOM works in React?

335


How arrow functions are used?

224


What is props?

240


Name out an important feature of Redux workflow features

287


What is flux?

242