History of WheelEvent.deltaY Revision history for: English (US) Jul 27, 2016, 8:47:48 PM IceCreamYou Safari has deltaY support as of at least 9.0 Previous Feb 20, 2015, 4:29:31 PM teoli Previous Feb 20, 2015, 9:02:36 AM teoli First version done.Web/API/WheelEvent.deltaY Web/API/WheelEvent/deltaY Jan 4, 2015, 1:42:14 AM teoli First version done.