title: ReCaptcha: How to autosubmit the form when the captcha was send
body: <p>I want to use ReCaptcha to load some extra data on the page. I want the form to be auto submitted when the ReCaptcha was entered. So that I don't need the extra submit button. The problem is that recaptcha loads its content inside an iframe, so its a bit difficult.</p>
  
  <p>At the moment I have this form:</p>
  
  <pre><code>&lt;form action="javascript:getInfo(grecaptcha.getResponse(widget1));" &gt;
        &lt;div id="captcha"&gt;&lt;/div&gt;
        &lt;br&gt;
        &lt;input type="submit" value="Submit"&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>How do I get something like an Event-Listener on the recaptcha submit which submits the outer form?</p>