Website footer template (e.g. mackan.pl @ 2020-2024)

website_footer_template.html

<!-- https://codesandbox.io/s/website-footer-template-zn56my -->
<script>
  // template: {website} © {fromYear} - {toYear}
  const url = "https://mackan.pl"; // TODO: change
  const label = "mackan.pl"; // TODO: change
  const fromYear = 2020; // TODO: change
  const linkHtml = (() => {
    const linkElement = document.createElement("a");
    linkElement.textContent = label;
    linkElement.href = url;
    linkElement.target = "_blank";
    linkElement.rel = "noopener";
    return linkElement.outerHTML;
  })();
  const yearRange = (() => {
    let text = fromYear;
    const currentYear = new Date().getFullYear();
    if (currentYear > fromYear) {
      text += " - " + currentYear;
    }
    return text;
  })();
  document.write(linkHtml + " © " + yearRange);
</script>

Alternative:

<a target="_blank" title="mackan.pl" href="https://mackan.pl" rel="nofollow">mackan.pl</a> © 2010-<script>document.write(new Date().getFullYear())</script>