tips

A tour of strange, real-world JavaScript bugs - why they happened, how they were fixed, and the concrete rules you can apply to avoid the same surprises in your codebase.

Learn to craft clear, powerful JavaScript one-liners using map, filter, reduce, chaining and modern operators-plus when to avoid compactness for clarity.

Default parameters turn brittle functions into resilient ones. Learn how to use defaults in JavaScript, Python and TypeScript to avoid 'undefined' bugs, sidestep common pitfalls like mutable defaults and falsy-value traps, and make your code clearer and safer.

Level up your web games with advanced requestAnimationFrame patterns. Learn fixed timesteps, interpolation, sub-stepping physics, OffscreenCanvas and sprite batching to achieve smooth, deterministic gameplay and efficient rendering across devices.

Explore the semicolon debate in JavaScript: how Automatic Semicolon Insertion (ASI) works, real-world pitfalls, arguments for both sides, what influential developers and major style guides recommend, and a practical team decision flow to pick the right approach for your project.

Discover five commonly overlooked causes of memory leaks in JavaScript - from detached DOM nodes to unbounded caches - with concrete detection steps and fixes you can apply right now to keep your app fast and stable.

Learn to organize and time your logs using console.group and console.time. This guide shows practical patterns, examples, and helper utilities to make debugging clearer - and even a bit fun.

A practical, in-depth exploration of advanced JSON parsing and stringifying behaviors in JavaScript - covering NaN/Infinity, -0, BigInt, Dates, functions/undefined, circular references, revivers/replacers, prototype-pollution risks, streaming large JSON, and safe patterns you can apply today.