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IntersectionObserverEntry

The IntersectionObserverEntry interface of the Intersection Observer API describes the intersection between the target element and its root container at a specific moment of transition.

Instances of IntersectionObserverEntry are delivered to an IntersectionObserver callback in its entries parameter; otherwise, these objects can only be obtained by calling IntersectionObserver.takeRecords().

Instance properties

IntersectionObserverEntry.boundingClientRect Read only

Returns the bounds rectangle of the target element as a DOMRectReadOnly. The bounds are computed as described in the documentation for Element.getBoundingClientRect().

IntersectionObserverEntry.intersectionRatio Read only

Returns the ratio of the intersectionRect to the boundingClientRect.

IntersectionObserverEntry.intersectionRect Read only

Returns a DOMRectReadOnly representing the target's visible area.

IntersectionObserverEntry.isIntersecting Read only

A Boolean value which is true if the target element intersects with the intersection observer's root. If this is true, then, the IntersectionObserverEntry describes a transition into a state of intersection; if it's false, then you know the transition is from intersecting to not-intersecting.

IntersectionObserverEntry.rootBounds Read only

Returns a DOMRectReadOnly for the intersection observer's root.

IntersectionObserverEntry.target Read only

The Element whose intersection with the root changed.

IntersectionObserverEntry.time Read only

A DOMHighResTimeStamp indicating the time at which the intersection was recorded, relative to the IntersectionObserver's time origin.

Instance methods

This interface has no methods.

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
IntersectionObserverEntry No 15–79 No No No 12.1 No No No No 12.2 No
IntersectionObserverEntry 51 15 55 No 38 12.1 51 51 55 41 12.2 5.0
boundingClientRect 51 15 55 No 38 12.1 51 51 55 41 12.2 5.0
intersectionRatio 51 15 55 No 38 12.1 51 51 55 41 12.2 5.0
intersectionRect 51 15 55 No 38 12.1 51 51 55 41 12.2 5.0
isIntersecting 58 16 55 No 45 12.1 58 58 55 43 12.2 7.0
rootBounds 51 15 55 No 38 12.1 51 51 55 41 12.2 5.0
target 51 15 55 No 38 12.1 51 51 55 41 12.2 5.0
time 51 15 55 No 38 12.1 51 51 55 41 12.2 5.0

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https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserverEntry