Committing extra source files

script.js

@@ -0,0 +1,21 @@
+
+// COPY BUTTON:
+document.addEventListener("DOMContentLoaded", function () {
+  document.querySelectorAll("pre.src").forEach(function (block) {
+    const button = document.createElement("button");
+    button.innerText = "Copy";
+    button.className = "copy-btn";
+
+    // Append button inside <pre>
+    block.appendChild(button);
+
+    button.addEventListener("click", function () {
+      const text = block.innerText.replace(button.innerText, ""); // exclude button text
+      navigator.clipboard.writeText(text.trim()).then(() => {
+        button.innerText = "Copied!";
+        setTimeout(() => (button.innerText = "Copy"), 1500);
+      });
+    });
+  });
+});
+