Function handleScroll

src/components/ScrollToTop.jsx:17–27

()

  useEffect(() => {
    smoothscroll.polyfill(); // Apply smoothscroll polyfill for older browsers
    const handleScroll = () => {
      let height = 580;
      const scrollCheck =
        document.documentElement.scrollTop ||
        document.body.scrollTop;
      if (scrollCheck > height) {
        setScroll(true);
      } else {
        setScroll(false);
      }
    };
    window.addEventListener("scroll", handleScroll);
    return () => {
      window.removeEventListener("scroll", handleScroll);