code: function triggerPointerEvents(type, pointerType) {
          var self = this;
          var names = {
              start: 'MSPointerDown',
              move: 'MSPointerMove',
              end: 'MSPointerUp'
          };
  
          var touchList = this._createTouchList(this.touches);
          touchList.forEach(function(touch) {
              var event = document.createEvent('Event');
              event.initEvent(names[type], true, true);
  
              event.MSPOINTER_TYPE_MOUSE = FakeTouches.POINTER_TYPE_MOUSE;
              event.MSPOINTER_TYPE_TOUCH = FakeTouches.POINTER_TYPE_TOUCH;
              event.MSPOINTER_TYPE_PEN = FakeTouches.POINTER_TYPE_PEN;
  
              event.pointerId = touch.identifier;
              event.pointerType = pointerType;
              event.pageX = touch.pageX;
              event.pageY = touch.pageY;
              event.clientX = touch.clientX;
              event.clientY = touch.clientY;
              event.buttons = (type == 'end') ? 0 : 1;
  
              self.element.dispatchEvent(event);
          });
  
          return true;
      }
docs: trigger pointer event
  @param type
  @param pointerType
  @returns {Boolean}