https://allfreevpn.com/assets/sticky.js

1const telegramSticky = document.querySelector('[data-telegram-sticky]');
2
3if (telegramSticky) {
4  const toggleTelegramSticky = function () {
5    const isMobile = window.innerWidth <= 768;
6    const passedScroll = window.scrollY > 160;
7
8    if (isMobile && passedScroll) {
9      telegramSticky.hidden = false;
10      telegramSticky.classList.add('is-visible');
11      document.body.classList.add('has-tg-sticky-mobile');
12      return;
13    }
14
15    telegramSticky.classList.remove('is-visible');
16    telegramSticky.hidden = true;
17    document.body.classList.remove('has-tg-sticky-mobile');
18  };
19
20  toggleTelegramSticky();
21  window.addEventListener('scroll', toggleTelegramSticky, { passive: true });
22  window.addEventListener('resize', toggleTelegramSticky);
23}