gistfile1.js

YUI().use('charts', 'app-base', function (Y) {
    
    var ChartView, StatsView, app;

    ChartView = Y.Base.create('chartView', Y.View, [], {
        render: function () {
            this.chart = new Y.Chart({
                dataProvider: [],
                render      : this.get('container')
            });

            return this;
        }
    });

    StatsView = Y.Base.create('statsView', Y.View, [], {
        render: function () {
            // Render stats.

            return this;
        }
    });

    app = new Y.App({
        serverRouting: false,

        views: {
            chart: {
                type    : ChartView,
                preserve: true
            },

            stats: {
                type    : StatsView,
                preserve: true
            }
        }
    });

    app.route('/charts/', function () {
        app.showView('chart', function (chartView) {
            // chartView.chart ponts to the Y.Chart instance.
        });
    });

    app.route('/stats/', function () {
        app.showView('stats')
    });

    app.dispatch().render();

});