IntersectionObserverEntry: rootBounds property

{{APIRef("Intersection Observer API")}}

The rootBounds read-only property of the {{domxref("IntersectionObserverEntry")}} interface is a {{domxref("DOMRectReadOnly")}} corresponding to the {{domxref("IntersectionObserverEntry.target", "target")}}'s root intersection rectangle, offset by the {{domxref("IntersectionObserver.rootMargin")}} if one is specified.

Value

A {{domxref("DOMRectReadOnly")}} which describes the root intersection rectangle. For roots which are the {{domxref("Document")}}'s viewport, this rectangle is the bounds rectangle of the entire document. Otherwise, it's the bounds of the root element.

This rectangle is offset by the values in {{domxref("IntersectionObserver.rootMargin")}}.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}