add buttons and eventListeners

docs/index.html

@@ -14,6 +14,7 @@
     <meta property="og:type" content="website"/><meta property="og:image" content="favicon.png">
     <link rel="icon" type="image/png" href="favicon.png">
     <link rel="stylesheet" href="prism.css">
+    <script src="../docs/bundle.js"></script>
   </head>
   <script>
     const search = (node) => {
@@ -1400,6 +1401,7 @@ Use <code>Number()</code> to check if the coercion holds.</p>
       </main>
     </div>
     <script src="prism.js"></script>
+    <script src="bundle.js"></script>
   </body>
 </html>