messages.imageAlt String(default: "Type the Captcha code from the image"")

The alt value of the captcha's image tag.

Example

<input id="captcha" />
<script>
    $("#captcha").kendoCaptcha({
        handler: "https://demos.telerik.com/kendo-ui/captcha/reset",
        messages: {
            imageAlt: "Enter the text from the image."
        }
    });
</script>