https://montessoriparatodos.es/modules/revi/views/js/widget.js

1function reviLoadWidgetScriptIfNeeded() {
2    if (!document.querySelector('[data-revi-widget-lazy]')) {
3        return;
4    }
5
6    if (window.__reviWidgetLoaderInjected || document.querySelector('script[data-revi-widget-cdn]')) {
7        return;
8    }
9
10    window.__reviWidgetLoaderInjected = true;
11
12    var script = document.createElement('script');
13    script.src = 'https://widgets.revi.io/embed/widget.js';
14    script.async = true;
15    script.setAttribute('data-revi-widget-cdn', '1');
16    script.onerror = function () {
17        window.__reviWidgetLoadFailed = true;
18    };
19
20    document.head.appendChild(script);
21}
22
23document.addEventListener('DOMContentLoaded', function () {
24    reviLoadWidgetScriptIfNeeded();
25
26    if (!window.MutationObserver) {
27        return;
28    }
29
30    var observer = new MutationObserver(function (mutations) {
31        for (var i = 0; i < mutations.length; i++) {
32            for (var j = 0; j < mutations[i].addedNodes.length; j++) {
33                var node = mutations[i].addedNodes[j];
34                if (!node || node.nodeType !== 1) {
35                    continue;
36                }
37
38                if (
39                    (node.matches && node.matches('[data-revi-widget-lazy]')) ||
40                    (node.querySelector && node.querySelector('[data-revi-widget-lazy]'))
41                ) {
42                    reviLoadWidgetScriptIfNeeded();
43                    observer.disconnect();
44                    return;
45                }
46            }
47        }
48    });
49
50    observer.observe(document.documentElement, {
51        childList: true,
52        subtree: true
53    });
54});