How to make Google reCAPTCHA mandatory " required"

Question

How to make Google reCAPTCHA mandatory " required"

Well, I implemented Google reCAPTCHA on my site forms, working normally, but it is possible to send the forms without selecting the captcha, how do I make it a mandatory field before submitting as a "required" ?

2

html javascript recaptcha

Author: HBretone, 2017-10-11

Source

2 answers

Use reCaptcha callback with jquery.validate

	$(document).ready(function () {
		$("#form").validate();
		$("#btnSubmit").prop("disabled", ($("#Form1").valid() ? false : "disabled"));
	});
		
    function recaptchaCallback(response) {
		$("#hidden-grecaptcha").val(response);
		$("#btnSubmit").prop("disabled", ($("#Form1").valid() ? false : "disabled"));
	};

	function recaptchaExpired() {
		$("#hidden-grecaptcha").val("");
		$("#btnSubmit").prop("disabled", ($("#Form1").valid() ? false : "disabled"));
	};

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.validate.js"></script>

    
<form id="Form1" method="post" action="">
	<div class="g-recaptcha" data-sitekey="xxx-xxxxxxxxxxxxxxxx-xx-x" data-callback="recaptchaCallback" data-expired-callback="recaptchaExpired"></div>
	<input type="text" id="hidden-grecaptcha" name="hidden-grecaptcha" style="opacity: 0; position: absolute; top: 0; left: 0; height: 1px; width: 1px;" />
	<br />
  <button id="btnSubmit" type="submit">Send</button>
</form>

1

Author: Albertino Júnior, 2018-05-15 13:34:02

score 3 · Accepted Answer

I found this is I believe to be the fastest way to implement, add this code to your header

    <script>
    window.onload = function() {
    var recaptcha = document.forms["Seu-Form"]["g-recaptcha-response"];
    recaptcha.required = true;
    recaptcha.oninvalid = function(e) {
    // fazer algo, no caso to dando um alert
    alert("Por favor complete o captchaba");
      }
   }
   </script>

Note: This only works with Html5, it's a quick fix to your problem.