openvk/Web/static/js/al_despacito_wall.js

27 lines
897 B
JavaScript
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const contentPage = document.querySelector(".page_content");
const rootElement = document.documentElement;
let smallBlockObserver = new IntersectionObserver(entries => {
entries.forEach(x => {
window.requestAnimationFrame(() => {
let pastHeight = contentPage.getBoundingClientRect().height;
if(x.isIntersecting)
contentPage.classList.remove("overscrolled");
else
contentPage.classList.add("overscrolled");
let currentHeight = contentPage.getBoundingClientRect().height;
let ratio = currentHeight / pastHeight;
rootElement.scrollTop *= ratio;
}, contentPage);
});
}, {
root: null, // screen
rootMargin: "0px",
threshold: 0
});
let smol = document.querySelector('div[class$="_small_block"]');
if(smol != null)
smallBlockObserver.observe(smol);