https://www.detecteurs.fr/blog/wp-content/themes/twentytwentychild/assets/js/app.js?ver=7.1.3

1function scrollUp(){
2  const scrollUp = document.getElementById('scroll-up');
3  // When the scroll is higher than 460 viewport height, add the show-scroll class to the a tag with the scroll-top class
4  if(this.scrollY >= 460) scrollUp.classList.add('show-scroll'); else scrollUp.classList.remove('show-scroll')
5}
6window.addEventListener('scroll', scrollUp)
7
8jQuery(document).ready(function($) {
9  var $articles = $('.sidebar__article-item');
10  var currentIndex = 0;
11
12  function toggleVisibility(index) {
13      $articles.hide();
14      $articles.eq(index).show();
15  }
16
17  // Initial Hide
18  toggleVisibility(currentIndex);
19
20  $('.right-arrow').click(function() {
21      if (currentIndex < $articles.length - 1) {
22          currentIndex++;
23          toggleVisibility(currentIndex);
24      }
25  });
26
27  $('.left-arrow').click(function() {
28      if (currentIndex > 0) {
29          currentIndex--;
30          toggleVisibility(currentIndex);
31      }
32  });
33});