EventManager.register("event1",function(){  　　console.log("event1 triggerd");  })　　 EventManager.register("event1",function(){  　　console.log("event1_1 triggerd");  })　　 EventManager.register("event2",function(){  　　console.log("event2 triggerd");  })　　  EventManager.triggerd("event1");  EventManager.triggerd("event2");  //输出结果是： event1 triggerd event1_1 triggerd event2 triggerd