montagejs/montage — pull request #1507 by thibaultzanini (2014-11-10 04:44:13+00:00)
Title: Add support of a wheel button of a pointing device is rotated with the TranslateComposer under IE9-11.

Internet Explorer exposes the wheel event only via addEventListener, there is no onwheel attribute on DOM objects. So, the TranslateComposer was listening to a MouseWheelEvent (even if it supports the WheelEvent) which has no wheelDeltaX or wheelDeltaY properties under IE, just a property named wheelDelta. That property just allow us to determine the distance and direction that the wheel button has rolled.

https://connect.microsoft.com/IE/feedback/details/782835/missing-onwheel-attribute-for-the-wheel-event-although-its-supported-via-addeventlistener