Starx

I would suggest using modernizr and using its media query features.

if (Modernizr.touch){
   // bind to touchstart, touchmove, etc and watch `event.streamId`
} else {
   // bind to normal click, mousemove, etc
}

However, using CSS, there are psedo class like, for example in firefox. You can use :-moz-system-metric(touch-enabled). But these features are not available for every browswers.

For Apple devices, you can simple use:

if(window.TouchEvent) {
   //.....
}

Specially for Ipad

if(window.Touch) {
    //....
}

But, these do not work on Android.

Modernizr gives feature detection abilities, and detecting features is
a good way to code, rather than coding on basis of browsers.