Detect when reCaptcha does not load

Question

What is the best way to detect if a reCaptcha v2 does not load? I would like to alert users when they need to use the captcha to continue, but it was unable to load.

Answer 1

You can pass a callback function when you make the request for the captcha

Add this to the url:

?onload=myfunction

for example:

 <script src="https://www.google.com/recaptcha/api.js?onload=loadedCallback&render=explicit"
        async defer>
    </script>

Js:

function loadedCallback(){
//Recaptcha its loaded
}