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 an event in react?

277

What are the lifecycle methods going to be deprecated in react v16?

260

How do you tell react to build in production mode and what will that do?

282

How to use https instead of http in create-react-app?

267

How events are different in react?

287

What is react intl?

453

What are the three principles that redux follows?

291

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

244

What is the significance of keys in react?

343

What are pure components?

232

What is arrow function in react?

287

How react router is different from history library?

312

Is it possible to use async/await in plain react?

250

Differentiate between stateful and stateless components?

244

What were the major problems with mvc framework?

303

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Un-Answered Questions { React.js }

What is the difference between element and component?

367

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

242

What are fragments?

268

What is the difference between stateless and stateful component?

242

How do you pass data from child to parent component?

284

What is the difference between states and props.

258

What is the difference between angularjs vs react.js?

301

What are the advantages of using jsx?

258

List down the components of redux?

316

How can you update the state of a component?

246

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

253

What is the significance of keys in react?

343

How different is react’s es6 syntax when compared to es5?

266

How are forms created in react?

254

What is component in reactjs?

283

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