positionedOffset(element) -> [Number, Number]

Calculates the element’s offset relative to its closest positioned ancestor (i.e., the element that would be returned by Position.offsetParent(element).

Deprecated in favor of Element#positionedOffset

Calculates the cumulative offsetLeft and offsetTop of an element and all its parents until it reaches an element with a position other than static.

Note that all values are returned as numbers only although they are expressed in pixels.