https://www.diariomedico.com/themes/custom/dmedico/js/nc-manager.js?tm2l5b

1// Js to manage all the related with the continuous navigation.
2(function ($, Drupal, document) {
3  Drupal.behaviors.homesNcManager = {
4    attach() {
5
6      $(once('homes-nc-manager', 'body'))
7        .each(function () {
8          const debug = false;
9
10
11          function loadNext(item){
12            let nextPageUrl = item.getAttribute('data-request');
13            if (!nextPageUrl) {
14              item.classList.add('nc-loaded');
15              item.classList.remove('nc-loading');
16              return
17            }
18            else {
19              item.classList.add('nc-loaded');
20              item.classList.remove('nc-loading');
21              if (debug) {console.log('NEXT PAGE LOADED:' + item.getAttribute('cod'))};
22
23              Drupal.ajax({ url: nextPageUrl, type: 'GET' }).execute();
24            }
25          }
26
27
28          // Load next page.
29          document.addEventListener('activeContentScrolled', function () {
30            let element = false;
31            let elementID = false;
32
33            if (document.querySelectorAll('.nc-container:not(.nc-loaded):not(.nc-loading)').length > 0) {
34              // Every loaded noticia renders its own container; pick the
35              // pending one instead of always the first (already used) one,
36              // otherwise the chain stalls after the 2nd article.
37              element = document.querySelector('.views-nav-continua:not(.nc-loaded):not(.nc-loading)');
38              if (element) {
39                elementID = 'News';
40              }
41              else {
42
43                let elements = document.querySelectorAll('.mod-nav-continua');
44                let currentElementID = document.querySelector('.mod-nav-continua.active').getAttribute('cod');
45                let follow = 0;
46
47                elements.forEach( (item) => {
48                  if (follow == 1) {
49                    element = item;
50                    elementID = element.getAttribute('cod');
51                    follow = 2
52                  }
53                  else if (item.getAttribute('cod') === currentElementID && follow == 0) {
54                    follow = 1;
55                  }
56                });
57              }
58
59              // Prevent load twice a node.
60              if (element && !element.classList.contains('nc-loaded') && !element.classList.contains('nc-loading')) {
61                element.classList.add('nc-loading');
62                if (debug) {console.log('LOADING PAGE: ' + elementID)}
63                loadNext(element);
64              }
65            }
66          });
67
68        });
69    }
70  }
71}(jQuery, Drupal, document));