Ext.onReady(function(){ //定义一个Person类 Person = function(name){ this.name = name; this.addEvents('walk','eat','sleep'); //为Person类添加自定义事件 } Ext.extend(Person,Ext.util.Observable,{ //继承自Observable,所以能够定义事件 info:function(event){ return this.name+'is'+event+'ing'; } }); var person = new Person("wang"); person.on('walk',function(){ Ext.Msg.alert('event',person.name+"走"); }); person.on('eat',function(){ Ext.Msg.alert('event',person.name+"吃"); }); person.on('sleep',function(){ Ext.Msg.alert('event',person.name+"睡"); }); Ext.get('walk').on('click',function(){ person.fireEvent('walk'); }); Ext.get('eat').on('click',function(){ person.fireEvent('eat'); }); Ext.get('sleep').on('click',function(){ person.fireEvent('sleep'); }); });