Learn how to use the Web Presentation API to project content to external screens, build remote-controlled slideshows and synchronized media, handle connection lifecycle, and fall back gracefully where support is limited. Includes practical code examples, implementation tips, and references.

Learn how to use the Web Bluetooth API to connect web apps to Bluetooth Low Energy devices, read sensor data in real time, send commands, and build robust IoT dashboards with step-by-step code examples and best practices.

A practical, in-depth guide to the Scheduling API: what it is, why it matters, how to use scheduler.postTask (with code examples), fallbacks, real-world use cases, best practices and browser support notes to help you add prioritized, non-blocking work to modern web applications.

A practical guide for frontend engineers that translates system-design thinking into patterns, trade-offs, and checklists for building scalable, high-performance user interfaces.

Memory leaks in JavaScript are often silent and slow - little by little they degrade performance until your app becomes unusable. This post explains why leaks happen, shows real-world examples, demonstrates how to find them with tools like Chrome DevTools and Node.js profilers, and gives a practical checklist to prevent and fix leaks.

Learn how the nullish coalescing operator (??) helps you avoid common pitfalls with falsy values in JavaScript. Examples, gotchas, interactions with optional chaining and logical operators, TypeScript notes, and best practices included.

A deep dive into JavaScript's strangest behaviors - from NaN and == surprises to hoisting, TDZ, floating-point oddities, object key ordering, and event-loop pitfalls - with examples and tips to avoid bugs.

Explore 10 lesser-known Express.js middleware tips - from pre-compressed static assets and conditional GETs to streaming uploads and route-level caching - to boost throughput and reduce latency in production apps.