ReCaptcha validation before form submission?

Question

JavaScript

Hello everyone, I installed the recaptcha, on the server, etc., everything is fine, but how can I check if the checkbox is checked before sending it or not?

if (grecaptcha.getResponse() == ""){
  $('#grecaptcha').html('Подтвердите что вы не робот');
  return false;
}

Doesn't work, swears at . (in line 1, where is grecaptcha . ) Can

you please tell me how to implement it?

Answer 1

I used this to test myself

var v = grecaptcha.getResponse();
            if (v.length == 0) {
                //
            }