Hello, thank you for the response. Manage to find a solution in that article you send.
created a file JS
/*VALIDATE RECAPTCHA FIELD SUBMIT FORM */
function validate_form() {
const recaptcha_box_checked = (grecaptcha.getResponse()) ? true : false;
if (recaptcha_box_checked) {
return true;
}
else {
alert("falta validar o campo 'Não sou um robô'");
return false;
}
}
HTML
<form id="contact-form" method="POST" data-netlify="true" onsubmit="return validate_form();">
Hope helps someone that need to validate a form with recaptcha, so this way won’t receive spam.