Function onScroll

src/ResizeSensor.js:273–282

()

            };

            var onScroll = function() {
                size = getElementSize(element);
                dirty = size.width !== lastWidth || size.height !== lastHeight;

                if (dirty && !rafId) {
                    rafId = requestAnimationFrame(onResized);
                }

                reset();
            };

            var addEvent = function(el, name, cb) {
                if (el.attachEvent) {