21 Essential React.js Interview Questions * Toptal sourced essential questions that the best React developers can answer. Driven from our community, we encourage experts to submit questions and offer feedback. Hire a Top React Developer Now is an exclusive network of the top freelance software deve...
3.2. Follow-up Question (continued): Can you describe a situation where you optimized a React application’s performance by strategically using the virtual DOM, and what techniques did you apply? Expected Answer:In an e-commerce project, we used the PureComponent and shouldComponentUpdate method...
Tip:This question should be easy to answer if you’ve spent any time with React. When it comes to using React, everything boils down to components. Components are the building materials React uses to create website and application UI’s. ...