title: What is the "d" in Google Chrome when we console.log() a Backbone.js Collection?
body: <p>Whenever I console.log() a Backbone.js Collection, Google Chrome's console shows the letter "d" unlike the typical "Object" log-entry in Safari or Firefox. Is there a difference? </p>
  
  <p>Also, whenever I console.log() any sub-item in a Collection (e.g., console.log(exampleCollection.models)), I get an empty array. Am I doing something wrong?</p>
  
  <p>Code:</p>
  
  <pre><code>(function($) {
    var Item = Backbone.Model.extend({
      defaults: {
        "sku":"",
        "brand":"",
        "model":"",
        "picture":"placeholder.jpg"
      },
      url: function() {
        return this.id ? 'products/' + this.id : 'products';
      }
    });
  
    var Items = Backbone.Collection.extend({
      model: Item,
      url: "products"
    });
  
    var items = new Items;
  
    items.fetch();
  
    console.log(items); // shows "d" in Google Chrome along with typical 
                        // object-like drop-down options
    console.log(items.models); //  shows "[]" empty array in console
  
  })(jQuery);
  </code></pre>