useIntersectionObserver
Registers an IntersectionObserver on ref and executes callback when
the observed element intersects with the root element.
- @param
ref- ARefObjectof the element to observe. - @param
callback- A function to execute when the observed element intersection changes. - @param
options- Configurable options - @returns void
Example
const ref = useRef<HTMLSpanElement>(null);
const [shouldLoadImage, setShouldLoadImage] = useState(false);
useIntersectionObserver(ref, (entry) => {
setShouldLoadImage(entry.isIntersecting);
}, { once: true })