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 purpose of render() function in reactjs?

360

What are the controlled components and uncontrolled components in reactjs?

353

What are refs in reactjs? When to use it.

352

What are synthetic events?

311

How is reactjs different from angular and vue js?

404

Explain life cycle of react js component?

315

What is the difference between dom and virtual dom in reactjs?

456

Enlist the advantages and disadvantages of reactjs?

368

Explain the difference between functional and class components.

323

List some features of reactjs?

304

List some advantages of reactjs?

316

What are stateless components in reactjs?

344

How is flux different from redux?

356

What is the difference between state and props in react js?

407

What do you understand by mixin or higher order components in reactjs?

299

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Un-Answered Questions { React.js }

When rendering a list what is a key and what is it's purpose?

319

What are the methods called when component is created or while inserting it to dom?

317

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

316

Does React re-render all components and sub components every time setState is called?

390

Explain basic code snippet of jsx with the help of a practical example?

321

Can you update the values of props?

348

What are controlled and uncontrolled components in React?

316

How react component lifecycle methods help in building interfaces?

399

What are the major issues of using MVC architecture in React?

457

What is the significance of refs in react?

332

What is the difference between reactjs and angularjs?

343

What is a router in react.js?

348

What are the feature of reactjs?

508

What is render() in React? And explain its purpose?

422

How to dispatch the data in-store?

380

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