isValid
Returns true if validated and valid, false if validated and not valid and null or undefined if not validated.
Example
<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");
captcha.validate().done(function () {
console.log(captcha.isValid());
});
</script>
Returns