perform action as the element comes in to view

Yash Jha answered on June 20, 2023 Popularity 2/10 Helpfulness 8/10

answer perform action as the element comes in to view

perform action as the element comes in to view

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export default function useOnScreen(ref: RefObject<HTMLElement>) {

  const [isIntersecting, setIntersecting] = useState(false)

  const observer = useMemo(() => new IntersectionObserver(
    ([entry]) => setIntersecting(entry.isIntersecting)
  ), [ref])


  useEffect(() => {
    observer.observe(ref.current)
    return () => observer.disconnect()
  }, [])

  return isIntersecting
}

// USAGE:::
const DummyComponent = () => {
  
  const ref = useRef<HTMLDivElement>(null)
  const isVisible = useOnScreen(ref)
  
  return <div ref={ref}>{isVisible && `Yep, I'm on screen`}</div>
}

Popularity 2/10 Helpfulness 8/10 Language typescript

Source: stackoverflow.com

Tags: action element typescript view

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Contributed on Jun 20 2023

Yash Jha

0 Answers Avg Quality 2/10

perform action as the element comes in to view

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