Untitled

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>


    <iframe
      id="JotFormIFrame-201667489502057"
      title="Form"
      onload="window.parent.scrollTo(0,0)"
      allowtransparency="true"
      allowfullscreen="true"
      allow="geolocation; microphone; camera"
      frameborder="0"
      style="min-width: 100%; height: 539px; border: none;"
      scrolling="no"
    >
    </iframe>

    <script>

    let firstName = "Someone";
    let lastName = "Niko";

    document.getElementById("JotFormIFrame-201667489502057").src =
     `https://form.jotform.com/201667489502057?name[first]=${firstName}&name[last]=${lastName}`;
    </script>


  </body>
</html>