How to check in js that user has checked the checkbox in Google recaptcha?

Question

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Answer 1

To check if google recaptcha v2 is checked or not you can do it by the following code :

var checkCaptch = false;
     var verifyCallback = function(response) {
        if (response == "") {
             checkCaptch = false;
         }
         else {
             checkCaptch = true;
         }
     };
     $(document).ready(function() {
         $("#btnSubmit").click(function() {
             if (checkCaptch && grecaptcha.getResponse()!="") {
                  //Write your success code here
             }
         });
     })