Understanding touch events

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If you haven’t already, I would suggest reading the source code for Hammer.js

https://github.com/hammerjs/hammer.js/blob/master/hammer.js

Between comments and code it’s about 1400 lines, there is great documentation and the code is easy to understand.

You can see how the author has chosen to solve a lot of the common touch events:

hold, tap, doubletap, drag, dragstart, dragend, dragup, dragdown,
dragleft, dragright, swipe, swipeup, swipedown, swipeleft, swiperight,
transform, transformstart, transformend, rotate, pinch, pinchin,
pinchout, touch (gesture detection starts), release (gesture detection
ends)

I think after reading the source code you will have much better understanding of how touch events work and how to identify which events the browser is capable of handling.

http://eightmedia.github.io/hammer.js/

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