Datepicker OnClose() not working after form submit

Question

Below code is working fine for me. (OnClose of ValidFrom datepicker it should set minDate for ValidTo and viceversa)

$( "#validFrom" ).datepicker({ 
      dateFormat : 'dd-M-yy', 
      changeMonth: true,
      changeYear: true,                                   
      onClose: function( selectedDate ) { 
        $( "#validTo" ).datepicker( "option", "minDate", selectedDate );
      }
    }); 
$( "#validTo" ).datepicker({ 
      dateFormat : 'dd-M-yy',
      changeMonth: true,
      changeYear: true,
      onClose: function( selectedDate ) { 
        $( "#validFrom" ).datepicker( "option", "maxDate", selectedDate );

      }
    });

But after form submit, the functionality is not working. It is not setting mindate and maxDate as specified

Adding css and js being used:

<script th:src="@{/js/jsDatePick.min.1.3.js}"></script> <link th:href="@{/css/jquery.ui.datepicker.css}" rel=" stylesheet" />

Javascript call on submit:

searchActionURL = function(obj) {

var atleastOneFilled = checkFields($("#searchForm")); 
$('#searchValidate').val(atleastOneFilled); 
$("#searchForm").attr("action", obj);    
if(atleastOneFilled)
{
    $("#searchResults").show(); 
}
else
{
    alert('Please specify one search item');
    return false;   
}
};