Make a combo box from ajax response

I have an ajax script. I'd like to make a combobox from the ajax response. this is my ajax script:

$.ajax({
    type : "POST",
    url : "<?php echo site_url('con_atk/get_harga'); ?>",
    cache: false,
    dataType : "json",
    data :  { y : id },
    success : function(outputs){ 

              $.each(outputs, function(index, value) {
                   //alert(value.harga);
                   //this is the data that is used for the combobox
              });

    }
}); 

var col_hrg = "<td style='text-align:right; vertical-align:middle'>"+ /*this is where the combo box should be*/ +"</td>";

is it posibble? Thank you for your help :)