clearPromptChar Boolean(default: false)

Specifies whether the widget will replace the prompt characters with spaces on blur. Prompt chars will be shown again on focus (available since Q2 2014 SP1).

Example - specify different prompt char

<input id="maskedtextbox" />
<script>
$("#maskedtextbox").kendoMaskedTextBox({
    mask: "000000",
    clearPromptChar: true
});
</script>