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 ‘Store’ feature in Redux?

253

How to dispatch the data in-store?

276

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

250

List down some of the methods in a react-dom package

248

What are the popular animation package in React ecosystem?

300

How can we do server-side rendering in React?

272

Can you update props in react?

298

What is Babel in React js?

259

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

292

How to build the React app for production?

273

What is ComponentWillMount()?

398

Explain react hooks?

241

What is the difference between shadow dom and virtual dom?

289

Explain error boundaries?

254

List some of the major advantages of react?

270

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Un-Answered Questions { React.js }

What do you understand by “single source of truth”?

242

what is the usage of refs and keys used in react?

310

Enlist the advantages and disadvantages of reactjs?

258

What are the key benefits of reactjs development?

281

How react component lifecycle methods help in building interfaces?

268

What is SyntheticEvent?

269

What is function based component?

249

What is the difference between stateless and stateful component?

232

What is the life cycle of reactjs?

263

What is the purpose of using bindActionsCreators?

241

Why are browsers unable to read jsx?

257

What is the main difference between createElement and cloneElment?

268

Explain the significance of store in redux?

274

What do you understand by refs in react?

244

Why react js is faster?

244

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