off
off(type, [selector], function(e){ ... }) ⇒ self
off({ type: handler, type2: handler2, ... }, [selector]) ⇒ self
off(type, [selector]) ⇒ self
off() ⇒ self
Detach event handlers added with on. To detach a specific event handler,
the same function must be passed that was used for on(). Otherwise, just
calling this method with an event type will detach all handlers of that type.
When called without arguments, it detaches all event handlers registered on
current elements.