动态使用addEventListener？

Question

我在Flash中创建了一个导航栏，并使用5个不同的影片剪辑作为按钮。每个动画片段（按钮）具有不同的实例名称。有没有办法使用的addEventListener让我没有做soemthing这样的：

//for button1 
button1.buttonMode = true;// Show the hand cursor 
button1.addEventListener(MouseEvent.ROLL_OVER, button1_over); 
button1.addEventListener(MouseEvent.ROLL_OUT, button1_out); 
button1.addEventListener(MouseEvent.CLICK, button1_click); 

function button1_over(e:MouseEvent):void 
{ 
    e.currentTarget.gotoAndPlay("over"); 
} 

function button1_out(e:MouseEvent):void 
{ 
    e.currentTarget.gotoAndPlay("out"); 
} 

function button1_click(e:MouseEvent):void 
{ 
    var request:URLRequest = new URLRequest("http://website.com"); 
    navigateToURL(request); 
} 
//for button2 
button2.buttonMode = true;// Show the hand cursor 
    button2.addEventListener(MouseEvent.ROLL_OVER, button2_over); 
    button2.addEventListener(MouseEvent.ROLL_OUT, button2_out); 
    button2.addEventListener(MouseEvent.CLICK, button2_click); 

    function button2_over(e:MouseEvent):void 
    { 
     e.currentTarget.gotoAndPlay("over"); 
    } 

    function button2_out(e:MouseEvent):void 
    { 
     e.currentTarget.gotoAndPlay("out"); 
    } 

    function button2_click(e:MouseEvent):void 
    { 
     var request:URLRequest = new URLRequest("http://website.com"); 
     navigateToURL(request); 
    } 

...等等所有五个按钮？

Answer 1

function buttonOver(e:MouseEvent):void { 
    e.currentTarget.gotoAndPlay('over'); 
} 
... etc 

for each(var b:MovieClip in [button1,button2,button3,button4,button5]) { 
    b.addEventListener(MouseEvent.ROLL_OVER, buttonOver); 
    b.addEventListener(MouseEvent.ROLL_OUT, buttonOut); 
    b.addEventListener(MouseEvent.CLICK, buttonClick); 
} 

你甚至可以进一步拾遗在函数内部事件的类型提高它，只是有一个：

function buttonHandler(e:MouseEvent):void { 
    // see the docs for MouseEvent and figure 
    // out what string to pass to goToAndPlay 
}