AS3，在循环方法中创建更多相同的函数

Question

我尝试在 for 循环方法中做一些函数，但它说 "Symbol 'myInstanceMovieClip', Layer 'as', Frame 31, Line 29 1084: Syntax error: expecting leftparen before leftbracket." 这是我的代码：

for(var i:int=0; i < btnhairmc.length; i++){
   btnhairmc[i].buttonMode=true;
   btnhairmc[i].addEventListener(MouseEvent.CLICK, goPlay[i]);
   function goPlay[i](m:MouseEvent):void{
      trace("btnhair[i]_mc <= clicked");
   }
}

我错在哪里？

Answer 1

函数名称：goPlay[i] 无效，应该只是 goPlay

您可以调整您的代码：

for (var i:int=0; i < btnhairmc.length; i++) {
   btnhairmc[i].buttonMode=true;
   btnhairmc[i].addEventListener(MouseEvent.CLICK, goPlay);
   function goPlay(m:MouseEvent):void {
      trace("btnhair["+i+"]_mc <= clicked");
   }
}

或者

for (var i: int = 0; i < btnhairmc.length; i++) {
    btnhairmc[i].buttonMode = true;
    btnhairmc[i].addEventListener(MouseEvent.CLICK, function (event: MouseEvent): void {
        trace("btnhair[" + i + "]_mc <= clicked");
    });

}

Answer 2

你可以这样做：

for (var i:int=0; i < btnhairmc.length; i++) {
   btnhairmc[i].buttonMode=true;
   btnhairmc[i].name="button-"+i;
   btnhairmc[i].addEventListener(MouseEvent.CLICK, goPlay);
}

function goPlay(e:MouseEvent) : void {
    trace(e.target.name);
    //or maybe you need
    trace(e.currentTarget.name);
    trace('Button' + e.target.name + 'was clicked!');
}

使用 e.target 或 e.currentTarget 你会知道按下了哪个按钮

希望对您有所帮助。

AS3，在循环方法中创建更多相同的函数

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