mylloon.fr/static/js/mail_obfuscation.js

window.addEventListener("load", () => {
  Array.from(document.getElementsByClassName("at")).forEach((elem) => {
    const a = elem.parentElement;
    const span = elem.previousElementSibling;

    // Replace (at) by @
    elem.outerHTML = "@";

    // Correct text
    const data = span.getAttribute("title");
    if (data.length > 0) {
      a.innerHTML = data;
    } else {
      a.style = "hyphens: none;";
    }

    // Change link
    const href = a.getAttribute("href");
    a.setAttribute("href", href.replace(" at ", "@"));
  });
});