Backbone.js secondary sort order with collection comparator example

backbone-secondary-sort.js

App.Collections.Notes = Backbone.Collection.extend({
  model: Note,
  url: '/notes.json',
  comparator : function(note) {
    //ordering by status (alphabetically asc) and id (numeric desc)
    var stat = note.get('status');
    var note_id = note.get('id');
    var sort_order = (stat.charCodeAt(0) * 100000) - note_id;
    return sort_order;
  }
});

Is there a better way to do this?