In my asp.net page, I have used the datepicker. I tried to change the date format and restrict the date range but it is not working. Only the datepicker is working currently. 

1. <asp:Content ID="SampleContent" ContentPlaceHolderID="SampleCPH" runat="server">
2. 
   
3. <div>
4. <label>Date Of Birth</label>
5. <asp:TextBox ID="txtDOB" runat="server" />
6. </div>
7. 
   
8. 
   
9. <script>
10. $(function () {
11. $("[id$=txtDOB]").datepicker();
12. 
    
13. $("[id$=txtDOB]").datepicker({ dateFormat: 'ISO 8601 - yy-mm-dd' });  // not working
14. });
15. // not working
16. $("#format").change(function () { $("[id$=txtDOB]").datepicker('ISO 8601 - yy-mm-dd', "dateFormat", $(this).val()); });
17. </script>
18. </asp:Content>

I tried both ways but not working.

1. $("[id$=txtDOB]").datepicker({ dateFormat: 'ISO 8601 - yy-mm-dd' });
2. $("#format").change(function () { $("[id$=txtDOB]").datepicker('ISO 8601 - yy-mm-dd', "dateFormat", $(this).val()); });