It's about the perceived speed of the behavior
It's essential in a touch interface that the feedback you get is continuous. That's why when you scroll on an iPhone, you can scroll past the end of a page. The user continues to 'feel' that the interface is still responsive, otherwise the interface seems stuck. So program in such a way that there is always response.
Javascript libraries generate a considerable amount of overhead on performance. It is better to make things mean & lean yourself. If you are able to do so.
Tip 3: (for the real geeks) treat the DOM in a mobile browser as 'read-only'
Writing to the DOM is so expensive in terms of memory usage and CPU that it becomes unacceptably slow.
Stephen Woods' entire presentation (with lots of technical tips) can be seen below.
The Payment Revolution is coming: welcome to interchange zero
We still remember Seth Priebatsch as last year's keynote speaker on gamification . What brother cell phone list has remained is his inimitable stream of words, the orange T-shirt and his orange sports sunglasses on his head. We wonder if he has slept since his last talk. But what has also remained is his ability to give a dazzling, entertaining and visionary presentation.