IntersectionObserverCallback Delegate
https://w3c.github.io/IntersectionObserver/#callbackdef-intersectionobservercallback
public delegate void IntersectionObserverCallback(IReadOnlyList<IntersectionObserverEntry> entries, IntersectionObserver observer)Parameters
entriesIReadOnlyList<IntersectionObserverEntry>- The entries of the targets whose intersection with the root changed.
observerIntersectionObserver- The observer.