1.学习EXTJs 必须一如既往的坚持编程的 严谨仔细，缺一个符号也会造成脚本功能不能实现，比如：
Ext.onReady(function(){
????????????Ext.extend(Person,Ext.util.Observable,{
??????????????? info:function(event){
??????????????????? return this.name+'is'+event+'ing.';
??????????????? }
??????????? });????????
??????????? var person = new Person('yonysun');
??????????? person.on('walk',function(){
??????????????? Ext.Msg.alert('event',person.name+'走啊走啊走啊...');
??????????? });
??????????? person.on('eat',function(breakfast,lunch,supper){
??????????????? Ext.Msg.alert('event',person.name+'需要吃'+breakfast+lunch+supper+'...');
??????????? });
??????????? person.on('sleep',function(time){
??????????????? Ext.Msg.alert('event',person.name+'从'+time.format('H')+'点开始睡觉...');
??????????? });????????????????
});
?Ext.onReady(function(){?-----------------function后面必须跟()！
每一个小括号后面都要有" ; " 否则 报错！
???
问题：??? Person = function(name){
?????????? this.name=name;
?????????? this.addEvents('walk','eat','sleep');
??????? };>>>>此处的大括号后面不加标点或加","";"都好用why？<<<<
??????? Ext.extend(Person,Ext.util.Observable,{
?????????? info:function(event){
????????????? return this.name+'is'+event+'ing.';
?????????? }
??????? });
?
2.Ext.get('id')取得Html元素后，怎样控制其CSS元素及动作？
? 如下代码所示 主要用DOM控制：
?
divd.on('mouseover',function(){
//divd.dom.style.display='none';
divd.dom.style.backgroundColor='E88E88';
});
divd.on('mouseout',function(){
//divd.dom.style.display='block';
divd.dom.style.backgroundColor='DBDBDB';
});
?
3.on('xxx',function(){});??? 已验证有click/mouseover/mouseout?? keypress mousedown 不确定