hexo-theme-stellar/layout/_partial/plugins/comments/utterances/script.ejs

<script>
  function loadUtterances() {
    const els = document.querySelectorAll("#comments #utterances");
    if (els.length === 0) return;
    els.forEach((el, i) => {
      try {
        el.innerHTML = '';
      } catch (error) {
        console.error(error);
      }
      var script = document.createElement('script');
      script.src = 'https://utteranc.es/client.js';
      script.async = true;
      for (let key of Object.keys(el.attributes)) {
        let attr = el.attributes[key];
        if (['class', 'id'].includes(attr.name) === false) {
          script.setAttribute(attr.name, attr.value);
        }
      }
      el.appendChild(script);
    });
  }
  window.addEventListener('DOMContentLoaded', (event) => {
      loadUtterances();
  });
</script>