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Interview questions with clear answers, code examples and links to go deeper.
Frontend articles
XSS, CSRF and CORS explained: frontend security interview questions
The difference between XSS, CSRF and CORS, how React protects you, where to store tokens, what a preflight request is and how to fix the common CORS error.
8 min read · Oct 31, 2026
FrontendWeb accessibility (a11y) interview questions and answers (2026)
Semantic HTML, keyboard access, ARIA, color contrast, focus management and testing: the accessibility questions frontend interviewers ask, with clear answers and code.
9 min read · Oct 31, 2026
FrontendResponsive design interview questions: mobile-first, media queries and container queries
Mobile-first design, media queries, fluid typography with clamp, container queries, responsive images and testing: answers and code for frontend interviews.
8 min read · Oct 31, 2026
FrontendHTTP and REST API interview questions for frontend developers
HTTP methods, status codes, headers, caching, fetch error handling, REST design, authentication and pagination: the API questions frontend interviews ask, with examples.
9 min read · Oct 31, 2026
Frontend20 HTML interview questions and answers with examples (2026)
HTML interview questions on semantic elements, doctype, forms, data attributes, script loading, meta tags and SEO basics, with short answers and code you can reuse.
9 min read · Oct 31, 2026
FrontendHow browsers render a page: critical rendering path, reflow and repaint
What happens between receiving HTML and seeing pixels: DOM, CSSOM, layout, paint and compositing, why scripts block rendering, and how to avoid layout thrashing.
8 min read · Oct 31, 2026
FrontendFrontend system design interview: how to design autocomplete, infinite scroll and a news feed
A practical framework for frontend system design interviews, with worked answers for an autocomplete search box, infinite scroll and a news feed, covering state, caching and performance.
9 min read · Oct 31, 2026
FrontendCSS interview questions: specificity, box model, positioning and stacking
The CSS fundamentals interviewers test: specificity, the cascade, box-sizing, position, z-index and stacking contexts, units, variables and pseudo-classes, with examples.
9 min read · Oct 31, 2026
FrontendCSS Flexbox vs Grid: interview questions and answers (2026)
When to use Flexbox and when to use CSS Grid, how the axes work, why flex items overflow, auto-fit vs auto-fill, grid areas and subgrid, with short answers and code.
9 min read · Oct 31, 2026
FrontendCore Web Vitals explained: LCP, INP and CLS interview questions
What the three Core Web Vitals measure, the thresholds for a good score, how to fix each one in React and Next.js, and how to measure them with lab and field data.
8 min read · Oct 31, 2026
FrontendBehavioral interview questions for frontend developers, with sample answers
How to answer behavioral interview questions using the STAR method, with sample answers for conflict, deadlines, mistakes, code review and teamwork, written for frontend developers.
8 min read · Oct 31, 2026
FrontendFrontend developer interview roadmap: what to study and in what order
A practical study plan covering HTML, CSS, JavaScript, React, Git and system design basics.
5 min read · Oct 2, 2026
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