https://www.origo.hu/assets/scripts/init-loader.js

1(function(){
2  const interval = setInterval(function() {
3    /** @var {HTMLLinkElement} styleJs */
4    const stylesJs = document.querySelector('link[href^="styles"][href$=".css"]');
5    /** @var {HTMLScriptElement} styleJs */
6    const mainJs = document.querySelector('script[src^="main"][src$=".js"]');
7    if (stylesJs) {
8      clearInterval(interval);
9      removeInitLoader();
10    } else if (mainJs) {
11      clearInterval(interval);
12      mainJs.onload = removeInitLoader;
13    }
14  }, 500);
15
16  let safetyTimeout = setTimeout(function() {
17    removeInitLoader();
18    clearInterval(interval);
19  }, 3000);
20
21  function removeInitLoader() {
22    if (safetyTimeout) {
23      clearTimeout(safetyTimeout);
24    }
25
26    const loader = document.getElementById('init-loader');
27    if (loader) {
28      loader.parentNode.removeChild(loader);
29    }
30  }
31
32  /**
33   * Due to some caching issues the old index.html could be cached for 1 year.
34   * This is a big problem for as it would not update to the latest version of the site.
35   * As the cache for the init loader is only 300 sec, we can make a redirect to the root / page to circumvent this issue.
36   */
37  function checkIndexHtmlCacheRedirect() {
38    const url = window.location.href;
39    if(url.endsWith('/index.html')) {
40      window.location.href = url.replace('/index.html', '');
41    }
42  }
43  checkIndexHtmlCacheRedirect();
44})()