scroll-effect.js?ver=1.0

js regroupement-rcms.org collected 2026-10-02 07:09:20 UTC 1,040 bytes, 25 lines download raw bytes

1const value80vh = window.innerHeight * 0.8;
2const menu_desktop = document.querySelector('#menu-desktop');
3const menu_mobile = document.querySelector('#menu-mobile');
4
5window.addEventListener('scroll', () => {
6    const scrolled = window.pageYOffset;
7    const windowHeight = window.innerHeight;
8    const diapo = document.querySelector('.diapo-bg');
9    const scrollRange = windowHeight * 1.5;
10    
11    if (scrolled < scrollRange) {
12        const translateY = -scrolled * 0.5;     
13        const opacity = Math.max(.5, 1 - (scrolled / windowHeight));
14        diapo.style.transform = `translateY(${translateY}px)`;
15        diapo.style.opacity = opacity;
16    }
17    const scrollAmount = window.scrollY;
18    if (scrollAmount > value80vh) {
19        menu_desktop.style.background = "linear-gradient(180deg, black, transparent)";
20        menu_mobile.style.background = "linear-gradient(180deg, black, transparent)";
21    } else {
22        menu_desktop.style.background = "transparent";
23        menu_mobile.style.background = "transparent";
24    }
25});

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