HTMLElement.offsetTop
The HTMLElement.offsetTop
read-only property returns the
distance of the outer border of the current element relative to the inner border of
the top of the offsetParent
, the closest positioned
ancestor element.
Value
A number.
Examples
const d = document.getElementById("div1");
const topPos = d.offsetTop;
if (topPos > 10) {
// object offset is more
// than 10 pixels from its parent
}
Specifications
Specification |
---|
CSSOM View Module # dom-htmlelement-offsettop |
Browser compatibility
BCD tables only load in the browser
In compliance with the specification, this property will return null
on
Webkit if the element is hidden (the style.display
of this element or any
ancestor is "none"
) or if the style.position
of the element
itself is set to "fixed"
.
This property will return null
on Internet Explorer (9) if the
style.position
of the element itself is set to "fixed"
.
(Having display:none
does not affect this browser.)