  a.textContent = v2;
          })();
        </script>
      </li>

      <li>
        <button id="button-prompt">prompt()</button>
        <code id="testPrompt"></code>
        <script type="text/partytown">
          (function () {
            const btn = document.getElementById('button-prompt');
            btn.addEventListener('click', () => {
              const elm = document.getElementById('testPrompt');
              elm.textContent = prompt('MPH');
            });
          })();
        </script>