Snippet showing cancelling of touchmove event on vertical swipe

touchmove.js

// [...] already calculated xmove and ymove since last movement ... ] 
   if( ymove && Math.abs(ymove) > Math.abs(xmove) ){
       // this was intended as a vertical scroll - probably of the page
       // we will allow this event through so the OS/browser can handle it.
       return true;
   }
   if( xmove ){
       // else take control of horizonal scroll position and cancel event
       element.scrollLeft = Math.max( 0, xstart + xmove );
   }
   event.preventDefault();
   return false;
// [...]