swipeY

by Oleh Kotsubko

JavaScript

var touchstartY = 0;
  var touchendY = 0;

  swipe.addEventListener('touchstart', function(event) {
    touchstartY = event.changedTouches[0].screenY;
  }, false);

  swipe.addEventListener('touchend', function(event) {
    touchendY = event.changedTouches[0].screenY;
      handleSwipe();
  }, false); 

  function handleSwipe() {
      var swiped = 'swiped: ';
      if (touchendY > touchstartY) {
          alert(swiped + 'down!');
      }
  }