ExtJs3.2学习笔记20120919

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