utterances.html

<script>
  document.addEventListener("DOMContentLoaded", function () {
    if (!/HistDataVis/.test(location.pathname)) {
      return;
    }
    
    var script = document.createElement("script");
    script.src = "https://utteranc.es/client.js";
    script.setAttribute("repo", "friendly/HistDataVis");
    script.setAttribute("issue-term", "og:title");
    script.setAttribute("crossorigin", "anonymous");
    script.setAttribute("label", "comments 💬");
    
    /* wait for article to load, append script to article element */
      var observer = new MutationObserver(function (mutations, observer) {
        var article = document.querySelector("d-article");
        if (article) {
          observer.disconnect();
          /* HACK: article scroll */
            article.setAttribute("style", "overflow-y: hidden");
          article.appendChild(script);
        }
      });
    
    observer.observe(document.body, { childList: true });
  });
</script>