Jquery get value dropdownlist

  $(window).load(function () {
        $(function () {
            $.getJSON('@Url.Action("List", "Search")', function (result) {
                 var ddl = $('#ID');
                 ddl.empty();
                 $(result).each(function (i, item) {

                     ddl.append(
                         $('<option/>', {
                             value: this.ID
                         }).html(this.Description)

                     );
                 });
            });
          

         });

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I am using Jquery mobile. When I first go to the page the data loads, When I click a button and leave the page then come back I see the data in my Dom but it does not load back into the dropdown. anyway to fix this.