How to use Parse.query in a collection (Backbone like) on Stackoverflow

app.js

Parse.initialize("xxx", "xxx");

var AppRouter = Parse.Router.extend({
  routes: {
    "class-list": "listClasses"
  },

  initialize: function () {
    var self = this;
    this.loginView = new LoginView();

    // ----------------------------------------------------CLASS
    //                                                         |-----> Collection
    var ClassModel = Parse.Object.extend("Classes");
    this.classModel = new ClassModel();
    //                                                         |-----> Query
    var ClassQuery = new Parse.Query(ClassModel);
    //                                                         |-----> Collection
    var ClassCollection = Parse.Collection.extend({
      model: ClassModel,
      query: ClassQuery

    });
    this.classCollection = new ClassCollection();
    
    //                                                         |-----> View
    var ListClassView = Parse.View.extend({
      initialize: function () {
        //this.listenTo(this.collection, "reset", this.render);
      },
      render: function () {
        this.$el.html(Handlebars.templates.class_list(this.collection));
        return this;
      }
    });
    this.listClassView = new ListClassView({
      collection: self.classCollection
    });
    this.classCollection.fetch();
  },
});

var app = new AppRouter();
Parse.history.start();