IntersectionObserverEntry.rootBounds

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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

Syntax

var rootBounds = IntersectionObserverEntry.rootBounds;

Value

A DOMRectReadOnly which describes the root intersection rectangle. For roots which are the 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 IntersectionObserver.rootMargin.

Specifications

Specification Status Comment
Intersection Observer
The definition of 'IntersectionObserverEntry.rootBounds' in that specification.
Working Draft Initial definition

Browser compatibility

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