This test checks if offsetParent is always null when accessed from the HTML <body> and from elements with CSS property position:fixed. To ensure values match layout, this test also checks offsetTop and offsetLeft.

In addition to the HTML <body>, two elements with CSS property position:fixed are tested: One within the body, and one within an element with CSS property position:absolute.

Finally, a static- and relative-positioned element are tested for sanity and spec adherence.

Expected values are parenthesized. Test has passed if all values match.

First Fixed offsetParent (null): null

First Fixed offsetTop (10): 10

First Fixed offsetLeft (20): 20

Second Fixed offsetParent (null): null

Second Fixed offsetTop (15): 15

Second Fixed offsetLeft (30): 30

Body offsetParent (null): null

Body offsetTop (0): 0

Body offsetLeft (0): 0

Static offsetParent ([object HTMLBodyElement]): [object HTMLBodyElement]

Static offsetTop (15): 15

Static offsetLeft (15): 15

Relative offsetParent ([object HTMLBodyElement]): [object HTMLBodyElement]

Relative offsetTop (13): 13

Relative offsetLeft (19): 19