How to give this code in internet Explorer11

<script type="text/javascript">
        $("#tech2").change(function () {
        
           
            var cat = $(this).val();
            $.get('@Url.Action("viewemp")?id=' + cat, function (r) {                
                
                $('#div').html(r);
            });

        });

    var cat = $('#tech2').val();    
    if (cat != '') {
  
      
        $.get('@Url.Action("viewemp")?id=' + cat, function (r) {
                    $('#div').html(r);
                });
            }
    
    </script>