A deep look at how JavaScript's backtracking regex engine works, why certain patterns cause catastrophic slowdowns, and practical rewrites and tooling to avoid performance traps.
A deep dive into microtasks and macrotasks in JavaScript: what they are, how the event loop treats them, how they affect rendering and UX, illustrative diagrams and real-world examples, plus practical guidance to avoid performance pitfalls.
Learn how to build smooth, high-performance scroll animations using requestAnimationFrame. This article walks through time-based and velocity-based techniques, performance best practices, accessibility considerations, and debugging tips to create fluid scrolling experiences.
A deep, practical guide to JavaScript's typeof operator: what it tells you, where it lies, its surprising results (like typeof null === 'object'), and robust patterns to reliably detect types in real-world code.
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 how the Function constructor (new Function) lets you create JavaScript functions at runtime. Learn syntax, practical use cases, scope implications, performance and security trade-offs, and safer patterns for dynamic code generation.