Popular Questions and Answers from Frontend Developer Interviews
- What is the Difference Between Authorization and Authentication?
- What is CORS and How Does It Work?
- How HTTP Works and What an HTTP Request Consists Of
- How HTTPS Works and Difference from HTTP
- HTTP Status Codes
- OWASP Browser Vulnerabilities
- How Browser Works When Entering Request and Rendering Stages
- When Reflow and Repaint Occur in Browser
- What is REST and REST Principles
- Ways to Optimize Applications
- What is Webpack?
- Immutability and Mutability
- Shadow DOM
- Cookie
- How to Debug Application and Find Memory Leaks
- Browser Storage: Cookie, LocalStorage, SessionStorage and IndexedDB
- Ways to Get Data from Server: Server-Sent Events, Polling and Long Polling
- What is Progressive Rendering in Web Development
- CSR, SSR, SSG, ISR — Difference Between Rendering Strategies
- What is Service Worker?
- What is Web Worker?
- What is Critical Rendering Path (CRP) in Browser
- What is CDN and Why is it Needed?
- Types of Frontend Testing
- What is Three-way Handshake?
- Modern Browser Architecture
- Parsing Pipeline: From Bytes to DOM and CSSOM
- V8 Architecture: From Code to Machine Instructions
- HTTP/2 vs HTTP/3: Protocol Evolution
- Resource Loading Strategies