Frontend Web Development Interview Questions
HTML, CSS, JavaScript, React, Vue, Angular, responsive design, browser APIs, and frontend optimization
6 interview questions in this category to help you prepare for your next interview.
What are Progressive Web Apps (PWAs) and how do you implement them?
Understanding PWA concepts, service workers, offline functionality, and implementing app-like experiences on the web.
Explain responsive web design principles and techniques.
Understanding responsive design concepts including mobile-first approach, media queries, flexible grids, and modern CSS techniques.
What is the Virtual DOM in React and how does it improve performance?
Understanding React's Virtual DOM, its benefits over direct DOM manipulation, and the reconciliation process.
Explain CSS Flexbox and Grid. When would you use each layout method?
Understanding CSS Flexbox and Grid layout systems, their differences, and appropriate use cases for each.
What are React Hooks? Explain useState, useEffect, and custom hooks with examples.
Understanding React Hooks, their benefits over class components, and implementation of common hooks like useState and useEffect.
Explain the event loop in JavaScript and how asynchronous operations work.
Understanding JavaScript's single-threaded nature, event loop, call stack, and how async operations are handled.