How do I defer Google Recaptcha V3

9 posts by 2 authors in: Forums > CMS Builder
Last Post: August 5   (RSS)

By daniel - August 2

Hi Jeff,

I believe in Google's example, you're supposed to replace the "grecaptcha.ready" portion with what you actually want to use. So I think it would look something like this: 

<script async src="https://www.google.com/recaptcha/api.js"></script>
<script>
  // How this code snippet works:
  // This logic overwrites the default behavior of `grecaptcha.ready()` to
  // ensure that it can be safely called at any time. When `grecaptcha.ready()`
  // is called before reCAPTCHA is loaded, the callback function that is passed
  // by `grecaptcha.ready()` is enqueued for execution after reCAPTCHA is
  // loaded.
  if(typeof grecaptcha === 'undefined') {
    grecaptcha = {};
  }
  grecaptcha.ready = function(cb){
    if(typeof grecaptcha === 'undefined') {
      // window.__grecaptcha_cfg is a global variable that stores reCAPTCHA's
      // configuration. By default, any functions listed in its 'fns' property
      // are automatically executed when reCAPTCHA loads.
      const c = '___grecaptcha_cfg';
      window[c] = window[c] || {};
      (window[c]['fns'] = window[c]['fns']||[]).push(cb);
    } else {
      cb();
    }
  }

    grecaptcha.ready(function() {
        grecaptcha.execute('<?php echo urlencode(recaptcha_settings('site_key')); ?>', {action: <?php echo json_encode(recaptcha_settings('page')); ?>}).then(function(token) {
          document.getElementById("g-recaptcha-response").value = token;
        });
    });
</script>

Can you try that out, and let me know if it fixes the issue?

Thanks!

Daniel
Technical Lead
interactivetools.com

By JeffC - August 3

Thanks for the reply Daniel. I'm still getting the error: 

Recaptcha response not found, please ensure JavaScript is enabled in your browser

Jeff

By daniel - August 3

Hey Jeff,

I didn't notice that the second snippet was missing the API key when loading api.js - that may be the issue here. Can you try this out?

<script async src="https://www.google.com/recaptcha/api.js?render=<?php echo urlencode(recaptcha_settings('site_key')); ?>"></script>
<script>
  // How this code snippet works:
  // This logic overwrites the default behavior of `grecaptcha.ready()` to
  // ensure that it can be safely called at any time. When `grecaptcha.ready()`
  // is called before reCAPTCHA is loaded, the callback function that is passed
  // by `grecaptcha.ready()` is enqueued for execution after reCAPTCHA is
  // loaded.
  if(typeof grecaptcha === 'undefined') {
    grecaptcha = {};
  }
  grecaptcha.ready = function(cb){
    if(typeof grecaptcha === 'undefined') {
      // window.__grecaptcha_cfg is a global variable that stores reCAPTCHA's
      // configuration. By default, any functions listed in its 'fns' property
      // are automatically executed when reCAPTCHA loads.
      const c = '___grecaptcha_cfg';
      window[c] = window[c] || {};
      (window[c]['fns'] = window[c]['fns']||[]).push(cb);
    } else {
      cb();
    }
  }

    grecaptcha.ready(function() {
        grecaptcha.execute('<?php echo urlencode(recaptcha_settings('site_key')); ?>', {action: <?php echo json_encode(recaptcha_settings('page')); ?>}).then(function(token) {
          document.getElementById("g-recaptcha-response").value = token;
        });
    });
</script>

If that doesn't work, feel free to send a 2nd-level support request (https://www.interactivetools.com/support/request/) and I can take a look at it directly.

Thanks,

Daniel
Technical Lead
interactivetools.com

By JeffC - August 3

Hi Daniel

Thanks for the reply. I did notice the missing API key in your first post and tried with and without.

I won't post a 2nd level request. I don't have budget to fix it, and the problem is only a small one. I aim to make my pages load as fast as they can, but this one is actually pretty quick already.

Thanks for trying.

Jeff

By daniel - August 4

Hey Jeff,

This is something I could check out at no charge - it'd be useful for us to know as well. But as it's a minor issue I also understand if it's not worth the trouble.

Take care,

Daniel
Technical Lead
interactivetools.com

By JeffC - August 4 - edited: August 4

Thanks Daniel, I'll submit the request

Jeff

By daniel - August 4

Thanks John!

It appears that the script provided in Google's docs is slightly inaccurate - at least for our usage here - so I've made a small change and it appears to be working with async. For anyone else reading, here is the final updated script:

    <script async src="https://www.google.com/recaptcha/api.js?render=<?php echo urlencode(recaptcha_settings('site_key')); ?>"></script>

    <script>
        
      if(typeof grecaptcha === 'undefined') {
        grecaptcha = {};
      }
      grecaptcha.ready = function(cb){
        if(typeof grecaptcha.execute === 'undefined') {
          // window.__grecaptcha_cfg is a global variable that stores reCAPTCHA's
          // configuration. By default, any functions listed in its 'fns' property
          // are automatically executed when reCAPTCHA loads.
          const c = '___grecaptcha_cfg';
          window[c] = window[c] || {};
          (window[c]['fns'] = window[c]['fns']||[]).push(cb);
        } else {
          cb();
        }
      }
    
      grecaptcha.ready(function(){

          grecaptcha.execute('<?php echo urlencode(recaptcha_settings('site_key')); ?>', {action: <?php echo json_encode(recaptcha_settings('page')); ?>}).then(function(token) {

            document.getElementById("g-recaptcha-response").value = token;

          });

      });

    </script>

Cheers,

Daniel
Technical Lead
interactivetools.com

By JeffC - August 5

Spot on, thanks!

Jeff