Touch event detection is tricky now that desktop browsers are reporting touch events in windows. This script first checks for MS Pointer events, which combine touch and click events for devices like the Surface or HP touchsmart laptops. Otherwise it checks for HTML5 standard touch events AND the window.orientation object, this ensures the user i…

getGrabberEvents.js

// this will pull events for a grabber action: down, up, and move
var getGrabberEvents = function() {
  // run through possible events
  if(window.navigator.msPointerEnabled) { // windows specific
    // see http://msdn.microsoft.com/en-us/library/ie/hh673557(v=vs.85).aspx
    return 'MSPointerDown MSPointerUp MSPointerMove';
  } else if(window.orientation && Modernizr.touch) { // html5 standard touch events
    // if you don't want to use modernizr, see this thread:
    // http://stackoverflow.com/questions/14267598/is-there-a-more-elegant-way-to-detect-touch-events-support-and-assign-either-a
    return 'touchstart touchend touchmove';
  } else { // otherwise return click events
    return 'mousedown mouseup mousemove';
  }
};