Subscribe and get access to my free weekly newsletter where I break down the latest happenings in the world of code
SHARE
New Article: Resolving JavaScript Memory Leaks
July 15, 2025
​
Hello there! 👋
Hope the week’s going well! I just published something that might save you from a debugging nightmare down the road.
New article: How to check for memory leaks in JavaScript
You know that sinking feeling when users start complaining about your app getting sluggish after a few minutes? Or when your perfectly working development build suddenly crashes browsers in production?
Yeah, that’s usually a memory leak. And they’re sneaky little buggers.
I’ve been there plenty of times spending hours pulling my hair out trying to figure out why my typing test was crashing browsers. Turns out I was accidentally hoarding DOM elements in a global array like some kind of digital pack rat.
Here’s what I cover in the post:
You’ll learn how to use heap snapshots (your new best friend), the three-snapshot technique that actually works, and how to read those confusing DevTools memory graphs without getting overwhelmed.
I also walk through the most common culprits - event listeners that stick around forever, timers that never stop, and closures that capture way more than they should. Plus some real code examples of what to avoid and how to fix it.
The best part? Most memory leaks follow predictable patterns. Once you know what to look for, they’re actually pretty easy to spot and fix.
​