Awesome

Learning Google reCAPTCHA

Just one of the things I'm learning. https://github.com/hchiam/learning

Then view stats or edit settings at https://www.google.com/recaptcha/admin/

I think I personally prefer "Invisible" until-needed reCAPTCHA v2 auto-bind setup: https://developers.google.com/recaptcha/docs/invisible#auto_render

<html>
  <head>
    <title>reCAPTCHA demo: Simple page</title>
    <script src="https://www.google.com/recaptcha/api.js" async defer></script>
    <script>
      function onSubmit(token) {
        document.getElementById("demo-form").submit();
      }
    </script>
  </head>
  <body>
    <form id="demo-form" action="?" method="POST">
      <button
        class="g-recaptcha"
        data-sitekey="your_site_key"
        data-callback="onSubmit"
      >
        Submit
      </button>
      <br />
    </form>
  </body>
</html>

Note that for proper usage on a real site you should also verify the reCAPTCHA response: https://developers.google.com/recaptcha/docs/verify#api-request

token = grecaptcha.getResponse(opt_widget_id); // or two other ways mentioned in https://developers.google.com/recaptcha/docs/verify

Then send token in POST request to https://www.google.com/recaptcha/api/siteverify

Then response JSON has {success:true|false,...}

to run the minimal example in this repo

yarn dev

npm start

(You won't be able to see reCAPTCHA on it though, since localhost:1234 isn't allowed. You'll have to see the live demo.)

# run yarn dev beforehand to generate the /dist folder with transpiled paths, etc.
yarn deploy

live demo

This can show reCAPTCHA:

https://recaptcha-test.surge.sh/

https://recaptcha-test.surge.sh/demo2/

your_site_key can be public, and since I've specified the domain to be recaptcha-test.surge.sh, it won't work on other domains, like:

https://recaptcha-test-non.surge.sh/

if you can't trigger the invisible reCAPTCHA to test you

To try to manually trigger the reCAPTCHA from the user side, try opening the browser in incognito (and raising the difficulty in the admin dashboard).

more things to try

test keys for automated testing: https://developers.google.com/recaptcha/docs/faq#id-like-to-run-automated-tests-with-recaptcha.-what-should-i-do

https://developers.google.com/recaptcha/docs/verify#api-request