flash as3.0动态添加属性和方法

package
{
import fl.controls.Button;
import fl.controls.TextArea;

import flash.display.Sprite;

public class test extends Sprite
{
private var b1:Button;
private var b2:Button;
private var b3:Button;
private var ta:TextArea;

public function test() {
testAddField();
testAddMethod();
}

//动态添加属性
public function testAddField():void{
var obj:Object = {};
obj.name = "hello";
obj.value = "world";
trace(obj.name); //输出hello
trace(obj.value); //输出world

}

//动态添加方法
public function testAddMethod():void{
var obj:Object = {};
obj.hello=function(){
trace("hello,world");
}
obj.hello();
}
}
}

输出：
hello
world
hello,world
[SWF] C:\Documents and Settings\my\Adobe Flash Builder Beta 2\test\bin-debug\test.swf - 解压缩后为 80,089 个字节