1 files changed, 36 insertions, 1 deletions

diff --git a/themes/simple/layouts/partials/footer.html b/themes/simple/layouts/partials/footer.html
index 95a1771..72252c7 100755
--- a/themes/simple/layouts/partials/footer.html
+++ b/themes/simple/layouts/partials/footer.html
@@ -6,10 +6,45 @@
   </p>
 </footer>
 
-<!-- katex math library -->
+<!-- KaTeX math library -->
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.13.13/dist/katex.min.css" integrity="sha384-RZU/ijkSsFbcmivfdRBQDtwuwVqK7GMOw6IMvKyeWL2K5UAlyp6WonmB8m7Jd0Hn" crossorigin="anonymous">
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.13.13/dist/katex.min.js" integrity="sha384-pK1WpvzWVBQiP0/GjnvRxV4mOb0oxFuyRxJlk6vVw146n3egcN5C925NCP7a7BY8" crossorigin="anonymous"></script>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.13.13/dist/contrib/auto-render.min.js" integrity="sha384-vZTG03m+2yp6N6BNi5iM4rW4oIwk5DfcNdFfxkk9ZWpDriOkXX8voJBFrAO7MpVl" crossorigin="anonymous" onload="renderMathInElement(document.body);"></script>
 
 <!-- Fathom - beautiful, simple website analytics -->
 <script src="https://cdn.usefathom.com/script.js" data-site="XHQARKXP" defer></script>
+
+<!-- Lazy loading of iframes -->
+<script>
+  window.addEventListener('load', () => {
+    const iframes = document.querySelectorAll('.ll-iframe');
+
+    if (iframes) {
+      iframes.forEach(iframe => {
+        iframe.addEventListener('click', (evt) => {
+          // If there are no elements yet in the target element add iframe.
+          if (!evt.target.dataset.alreadyLoaded) {
+            // Setting this element as already loaded so it doesn't
+            // attempt to load it again.
+            evt.target.dataset.alreadyLoaded = true;
+
+            // Clearing up all existing elements inside of the target one.
+            evt.target.innerHTML = '';
+            evt.target.classList.add('empty');
+            evt.target.classList.add('border-0');
+
+            // Creating iframe DOM element.
+            const iframeElement = document.createElement('iframe');
+            iframeElement.classList.add('w-full');
+            iframeElement.classList.add('h-full');
+            iframeElement.classList.add('rounded');
+            iframeElement.src = evt.target.dataset.src;
+
+            // Appending iframe as a child of current element.
+            evt.target.appendChild(iframeElement);
+          }
+        });
+      });
+    }
+  });
+</script>