<form method="POST" action="%s" id="form">

<input type="hidden" name="token" id="token">

</form>

<script>

grecaptcha.ready(function() {

grecaptcha.execute('%s', {action: 'recaptcha'}).then(function(token) {

document.getElementById("token").value = token;

document.getElementById("form").submit();

});;

});

</script>