Menu

1. 多层Menu，默认先显示第一个

var layer1 = new MenuLayerMainMenu();        var layer2 = new MenuLayer2();        var layer3 = new MenuLayer3();        var layer4 = new MenuLayer4();        var layer5 = new MenuBugsTest();        var layer6 = new RemoveMenuItemWhenMove();        var layer = cc.LayerMultiplex.create(layer1, layer2, layer3, layer4, layer5,layer6);        this.addChild(layer, 0);

2. 切换层次

 this.parent.switchTo(0);