Pure JavaScript/jQuery/HTML captcha

Question

can somebody sent me a link, or to provide me an example with pure Javascript/jQuery captcha. Because I can see a lots of examples with PHP/C# ... back end. But I need just

Answer 1

Hi AlexC you can validate your google recaptcha at client side also 100% work for me to verify your google recaptcha just see below code
This code at the html body:

This code put at head section on call get_action(this) method form button:

function get_action(form) {

    var v = grecaptcha.getResponse();
    if(v.length == 0)
    {
        document.getElementById('captcha').innerHTML="You can't leave Captcha Code empty";
        return false;
    }
    if(v.length != 0)
    {
        document.getElementById('captcha').innerHTML="Captcha completed";
        return true; 
    }
}