readonly
Toggles the readonly state of the widget. When the widget is readonly it doesn't allow user input.
There is a difference between disabled and readonly mode. The value of a disabled widget is not posted as part of a
form
whereas the value of a readonly widget is posted.
Parameters
readonly Boolean
The argument, which defines whether the DatePicker should be readonly or editable.
Example - make DatePicker widget readonly
<input id="datepicker" />
<script>
$("#datepicker").kendoDatePicker();
var datepicker = $("#datepicker").data("kendoDatePicker");
datepicker.readonly();
</script>
Example - make DatePicker widget editable
<input id="datepicker" />
<script>
$("#datepicker").kendoDatePicker();
var datepicker = $("#datepicker").data("kendoDatePicker");
datepicker.readonly(false);
</script>