some polish

docs/js/site/disqus.js

@@ -0,0 +1,32 @@
+const comments = document.getElementById(`disqus_thread`);
+
+document.addEventListener("scroll", scrollHandler, { passive: true });
+
+function scrollHandler() {
+  var bbox = comments.getBoundingClientRect();
+  var top = bbox.top;
+  var limit = window.innerHeight;
+  if (top < limit) {
+    loadDisqus();
+  }
+}
+
+let loadDisqus = () => {
+  console.log(`loading Disqus comments`);
+
+  globalThis.disqus_config = function () {
+    this.page.url = "https://pomax.github.io/bezierinfo";
+    this.page.identifier = "bezierinfo";
+  };
+
+  const script = document.createElement("script");
+  script.src = "https://bezierinfo.disqus.com/embed.js";
+  script.async = true;
+  script.setAttribute("data-timestamp", Date.now());
+  document.head.appendChild(script);
+
+  loadDisqus = () => {};
+  document.removeEventListener("scroll", scrollHandler);
+};
+
+scrollHandler();