Touchscreens are available on more and more devices, from phones up to desktop screens. Your app should respond to their touch in intuitive and beautiful ways.
interact.js is a standalone javascript module for handling single-pointer and multi-touch drags and gestures with powerful options such as inertia and snapping to grids or custom coordintes
J. Merelo, A. Garc\'ıa, J. Laredo, J. Lupión, und F. Tricas. Proceedings of the 2007 GECCO conference companion on Genetic and evolutionary computation, Seite 2851--2858. New York, NY, USA, ACM, (2007)