<input id="captcha" />
    <script>
        var captcha = $("#captcha").kendoCaptcha({
            handler: "https://demos.telerik.com/kendo-ui/captcha/reset",
            validationHandler: "https://demos.telerik.com/kendo-ui/captcha/validate"
        }).data("kendoCaptcha");

        setTimeout(function(){
            captcha.validate().done(function (data) {
                console.log(captcha.isValid(), data);
            });
        }, 1500);
    </script>