title: Require User to click google's new recaptcha before form submission
body: <p>I am using google's new recaptcha inside my form (HTML5):
  <a href="https://www.google.com/recaptcha" rel="nofollow noreferrer">https://www.google.com/recaptcha</a></p>
  <p>Is there a way to check and mark recaptcha as required before form submission?
  I want to validate this on client-side instead of server side. That way, I don't have to go back to the form and warn the user about not entering anything for the captcha.</p>
  <p>Any javascript that I can use to check whether users enter anything in recaptcha?</p>