How to validate and disable (start & end) dates less than start date (datepicker)

In some case we want start date should be less than end date, and to disable renaming date HTML Script $(document).ready(function(){ $(“#txtFromDate”).datepicker({ numberOfMonths: 1, onSelect: function(selected) { $(“#txtToDate”).datepicker(“option”,”minDate”, selected) } }); $(“#txtToDate”).datepicker({ numberOfMonths: 1, onSelect: function(selected) { $(“#txtFromDate”).datepicker(“option”,”maxDate”, selected) } }); });