CODE EXAMPLE FOR JAVASCRIPT

jquery post docs.google.com/forms/ CORS

<form id="my-form" target="my-response-iframe" action="https://docs.google.com/forms/u/1/d/e/<YOUR-ID>/formResponse" method="post">
  <input type="text" name="entry.12345678" value="" required>
  <input type="submit">
</form>