https://www.statistikakultury.cz/wp-content/themes/Statistika/js/index.js

1(function() {
2  var addClassToNumbers;
3
4  addClassToNumbers = function(parentClass, numberClass) {
5    var element, elements, html, i, len, newHtml, regex, results;
6    elements = document.querySelectorAll(`.${parentClass}`);
7    regex = /\b\d{1,3}(?:,\d{3})*(?:\.\d+)?\b/g;
8    results = [];
9    for (i = 0, len = elements.length; i < len; i++) {
10      element = elements[i];
11      html = element.innerHTML;
12      newHtml = html.replace(regex, function(match) {
13        return `<span class='${numberClass}'>${match}</span>`;
14      });
15      results.push(element.innerHTML = newHtml);
16    }
17    return results;
18  };
19
20  // Usage
21  addClassToNumbers("topten", "number");
22
23}).call(this);