One thing that people tend to forget in today’s HTML5-ed world is how extremely fast Flash actually was and still is. Constructing complex chains of tweened animations and having them run in real-time was absolutely doable and represented a major advantage compared to other in-browser graphics frameworks such as Java. And, as wonderful as HTML5 is, we’re still at least a couple of years behind in that regard. HTML5 is not the magic bullet that saves your device from high battery or CPU consumption and, yes, you can create memory leaks in Javascript and crash your browser.
