Learn how JavaScript's garbage collector actually works, why it doesn't save you from all memory leaks, common leakage patterns, and practical tools and fixes to find and eliminate leaks in browser and Node.js apps.
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.
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.