Js-offsetparent Locating the parent node

OffsetParent: The most exciting thing about the current element. A parent node with a location

If no parent is located, the default is body

IE7 below if the current element is not positioned by default is body, if there is a location is HTML

IE7 below, if a parent of the current element departs layout, (zoom:1;)

Then offsetparent will be directed to the parent node that triggered the layout.

<! DOCTYPE html>
Js-offsetparent Locating the parent node