unmaskOnPost Boolean(default: false)

Specifies whether the widget will unmask the input value on form post (available since Q1 2015).

Example - unmask value on form post

<form id='form'>
  <input id="maskedtextbox" name='maskedtb'/>
  <button type='submit'>Post</button>
</form>

<div><h4>Result</h4><p id='result'></p></div>
<script>
  $("#maskedtextbox").kendoMaskedTextBox({
    mask: "000000",
    unmaskOnPost: true
  });

  $("#form").on("submit", function(e) {
    e.preventDefault();
    let formData = $("#form").serialize();
    $("#result").html(formData);
  });
</script>