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              // mediatorの作成
window.App = {};
App.mediator = _.extend({}, Backbone.Events);

// ViewAの定義
var ViewA = Backbone.View.extend({
  events: {
    'click #buttonA': 'clickA' // 1.クリックイベントを取得
  },
  render: function() {
    this.$el.append($('<button></button>', {
      text: 'click me!!',
      id: 'buttonA'
    }));
    return this;
  },
  clickA: function() {
    // 2.イベントが発生したことをmediatorに伝える
    App.mediator.trigger('clickA');
  }
});

// ViewBの定義
var ViewB = Backbone.View.extend({
  initialize: function() {
    // 3.mediatorを購読している、Viewのイベントが発火
    this.listenTo(App.mediator, 'clickA', this.clickA);
  },
  render: function() {
    this.$el.append($('<b></b>', {
      text: 'view B!!',
      id: 'target'
    }));
    return this;
  },
  // 4.実行される関数
  clickA: function(){
    this.$el.find('#target').text('clicked!!')
  }
});


// 描画
var viewA = new ViewA();
var viewB = new ViewB();
$('#MyApp').append(viewA.render().el);
$('#MyApp').append(viewB.render().el);
            
          
!
999px
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