lab 2013:
│  fullScreen.html
│  angularjs demo01.html
│  angularjs demo02.html
│  angularjs demo03.html
│  angularjs demo04.html
│  angularjs demo05.html
│  printEventName.html
│  addEventListener.html
│  eventProxy.html
│  eventListenerUsecase.html
│  yourShopCart.html
└─assets
        no have