Ext事件示例（Ext.Msg.alert）
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <link rel="stylesheet" type="text/css" href="extjs/resources/css/ext-all.css" /><script type="text/javascript" src="extjs/adapter/ext/ext-base.js"></script><script type="text/javascript" src="extjs/ext-all.js"></script><script type="text/javascript" src="extjs/ext-all-debug.js"></script><script type="text/javascript">Ext.onReady(function(){Person = function(name){this.name=name;this.addEvents("walk","eat","sleep");}Ext.extend(Person,Ext.util.Observable,{info:function(event){return this.name+'is'+event+'ing.';}});Ext.get('walk').on('click',function(){person.fireEvent('walk');});Ext.get('eat').on('click',function(){person.fireEvent('eat','早餐','中餐','晚餐');});Ext.get('sleep').on('click',function(){person.fireEvent('sleep',new Date());});var person=new Person('Lingo');person.on('walk',function(){Ext.Msg.alert('event',person.name+"在走啊走啊。");});person.on('eat',function(breakfast,lunch,supper){Ext.Msg.alert('event',person.name+"要吃"+breakfast+","+lunch+"和"+supper+"。");});person.on('sleep',function(time){Ext.Msg.alert('event',person.name+"从"+time.format("H")+"开始睡觉了。");});});</script> </head> <body> <input type="button" value="walk" name="button1" id="walk"> <input type="button" value="eat" name="button2" id="eat"> <input type="button" value="sleep" name="button3" id="sleep"> </body></html>?