Full coverage of web frontend development including Vue, React, new CSS features, and performance optimization
Build installable, offline-first Progressive Web Apps: Service Worker caching strategies (Cache First, Stale-While-Revalidate), IndexedDB wrapper for structured local data, Background Sync queue that replays offline operations when network returns. Full TypeScript code included.
Tailwind CSS v4 is an architectural upgrade: goodbye tailwind.config.js, declare design tokens in @theme blocks inside native CSS files. Single @import "tailwindcss" entry replaces postcss.config; built-in CSS vars, native container queries, oxc engine 10-40x faster, simplified color functions.
Practical Google Core Web Vitals playbook: LCP via preconnects/image-priority/CDN, CLS elimination via image dimensions/font-loading/placeholders, INP via long-task splitting + debouncing.
Astro innovations: Islands Architecture for minimal JS with partial hydration, Content Collections for type-safe Markdown/MDX management, ultra-fast zero-JS static sites.
Modern responsive CSS pillars: Container Queries for component-level responsiveness based on parent size (not viewport), plus :has() parent selector for ancestor styling based on descendants.
React 18 introduces revolutionary features like concurrent rendering, automatic batching, useTransition, and useDeferredValue. This article systematically covers correct useState/useEffect usage, useMemo/useCallback optimization boundaries, custom Hook design patterns, and a complete guide to avoiding stale closures, race conditions, and other pitfalls in concurrent mode.
Vue 3's Composition API fundamentally changed how Vue components are organized. Through building a complex e-commerce filter component, this article demonstrates ref vs reactive choices, proper computed/watch usage, custom Composable extraction principles, lifecycle hook timing, and the correct approach to cross-layer state via provide/inject.
