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hide nav on scroll down or up

Delightful Dove answered on August 16, 2022 Popularity 9/10 Helpfulness 4/10

answer hide nav on scroll down or up

hide nav on scroll down or up

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function useScrollDirection() {
  const [scrollDirection, setScrollDirection] = useState(null);

  useEffect(() => {
    let lastScrollY = window.pageYOffset;

    const updateScrollDirection = () => {
      const scrollY = window.pageYOffset;
      const direction = scrollY > lastScrollY ? "down" : "up";
      if (direction !== scrollDirection && (scrollY - lastScrollY > 10 || scrollY - lastScrollY < -10)) {
        setScrollDirection(direction);
      }
      lastScrollY = scrollY > 0 ? scrollY : 0;
    };
    window.addEventListener("scroll", updateScrollDirection); // add event listener
    return () => {
      window.removeEventListener("scroll", updateScrollDirection); // clean up
    }
  }, [scrollDirection]);

  return scrollDirection;
};

Popularity 9/10 Helpfulness 4/10 Language javascript

Source: www.codemzy.com

Tags: hide javascript nav scroll

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Contributed on Aug 16 2022

Delightful Dove

0 Answers Avg Quality 2/10

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hide nav on scroll down or up

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