In this video screencast, I’ll go through the process of how to diagnose issues with slow code and how to fix those issues in your code. Watch me fix for a 2d canvas demo that’s so slow it can barely update after a few seconds. By running a performance analysis, I’ll show you a simple code tweak that makes the demo run well at real-time rates.
By: Mozilla Hacks – the Web developer blog
Via: Feedbin Starred Entries