[AS3]as3与js通信源代码(2)

　　里边的参数就是embed标签里边的name和object标签里边的id。

　　另外一种方法是：

window.document.myFlash 

myFlash，也是embed标签里边的name和object标签里边的id。不知道还有其他的方法没。对js不了解。获取到对swf的引用，就可以去调用as里边的方法了。直接在后边接 "." ，再接AS那边的方法名，再接里边的参数。也可以不需要参数。看个人需要。

这里还有ifrme的调用。对iframe也很陌生。知道，通过调用，可以在网页调用的swf上覆盖一层页面。这里，可以做flash有时候不方便做，而页端方便做的事情。却不影响美观。具体搞法，看代码。

下边贴出完整的代码：

AS_code:

package 
{ 
    import flash.display.Sprite; 
    import flash.display.StageAlign; 
    import flash.display.StageScaleMode; 
    import flash.events.MouseEvent; 
    import flash.external.ExternalInterface; 
    import flash.text.TextField; 
    import flash.text.TextFieldAutoSize; 
    import flash.text.TextFieldType; 
    import flash.text.TextFormat; 
     
    public class AsToJs extends Sprite 
    { 
        private var sendBtn:Button; 
        private var _txt:TextField; 
        private var _txtFormat:TextFormat; 
        private var _inputTxt:TextField; 
        private var _step:int = 0 ; 
         
        public function AsToJs() 
        { 
            stage.scaleMode = StageScaleMode.NO_SCALE; 
            stage.align = StageAlign.TOP_LEFT; 
             
            if(ExternalInterface.available) 
            { 
                ExternalInterface.addCallback("receiveMes",asReceiveMes); 
                ExternalInterface.addCallback("backMes",jsBackMes); 
            } 
            Init(); 
        } 
         
        private function callJs(str:String):void 
        { 
            var len:int = str.length; 
            var tempArr:Array; 
            var _url:String; 
            var _x:Number; 
            var _y:Number; 
            var _w:Number; 
            var _h:Number; 
             
            tempArr = str.split("-"); 
             
            switch(int(tempArr[0])) 
            { 
                case 1: 
                    if(_step ==0 || _step == 3) 
                    { 
                        _url = tempArr[1]; 
                        ExternalInterface.call("loadIFrame",_url); 
                        if(_step !=3) 
                        { 
                            _step = 1; 
                        } 
                        printf("加载 Iframe"); 
                    }     
                    break; 
                case 2: 
                    if(_step == 1) 
                    { 
                        ExternalInterface.call("showIFrame"); 
                        _step = 2; 
                        printf("显示 Iframe"); 
                    } 
 
                    break; 
                case 3: 
                    if(_step >= 2) 
                    { 
                        _x = int(tempArr[1]); 
                        _y = int(tempArr[2]); 
                        _w = int(tempArr[3]); 
                        _h = int(tempArr[4]); 
                        ExternalInterface.call("moveIFrame",_x,_y,_w,_h); 
                        _step = 3; 
                        printf("移动 Iframe"); 
                    } 
                    break; 
            } 
        } 
         
        private function asReceiveMes(str:String):void 
        { 
            printf("<font color='#ff0000'>JS发送，AS接受: </font>" + str); 
        } 
         
        private function jsBackMes(str:String):void 
        { 
            printf("<font color='#ff0000'>AS发送，JS返回: </font>" + str); 
        } 
         
        private function Init():void 
        { 
            InitBtn(); 
            InitTxt(); 
            printf("<font color='#ff0000'>Hi,Baby.This is a Demo. </font>"); 
        } 
         
        private function InitBtn():void 
        { 
            sendBtn = new Button("发送信息"); 
            addChild(sendBtn); 
             
            sendBtn.x = stage.stageWidth - sendBtn.width -10; 
            sendBtn.y = stage.stageHeight - 36; 
            sendBtn.buttonMode = true; 
            sendBtn.addEventListener(MouseEvent.CLICK,clickHandler); 
        } 
         
        private function clickHandler(e:MouseEvent):void 
        { 
            if(ExternalInterface.available) 
            { 
                var numCode:int = int(_inputTxt.text.charAt(0)); 
                if(numCode > 0) 
                { 
                    callJs(_inputTxt.text); 
                } 
                else 
                { 
                    ExternalInterface.call("sendMes",_inputTxt.text); 
                } 
                _inputTxt.text = ""; 
            } 
        } 
        Boolean 
        private function printf(...args):void 
        { 
            var len:int = args.length; 
            for(var i:int =0 ; i< len ; i++) 
            { 
                if(_txt.numLines > 20) 
                { 
                    _txt.text = ""; 
                } 
                _txt.htmlText += (args[i] + "\n"); 
            }     
        } 
         
        private function InitTxt():void 
        { 
            _txtFormat = new TextFormat(); 
            _txtFormat.color = 0x00ff00; 
            _txtFormat.size = 13; 
             
            _txt = new TextField(); 
            _txt.autoSize = TextFieldAutoSize.LEFT; 
            _txt.defaultTextFormat = _txtFormat; 
            _txt.multiline = true; 
            _txt.wordWrap = true; 
            _txt.border = true; 
            _txt.borderColor = 0x00ffff; 
            _txt.width = stage.stageWidth - 20; 
            _txt.height = stage.stageHeight - 50; 
            addChild(_txt); 
             
            _txt.x = 10; 
            _txt.y = 10; 
             
            _inputTxt = new TextField(); 
            _inputTxt.autoSize = TextFieldAutoSize.LEFT; 
            _txtFormat.color = 0xff0000; 
            _inputTxt.defaultTextFormat = _txtFormat; 
            _inputTxt.type = TextFieldType.INPUT; 
            _inputTxt.wordWrap = true; 
            _inputTxt.border = true; 
            _inputTxt.borderColor = 0x00ffff; 
            _inputTxt.width = stage.stageWidth - 100; 
            addChild(_inputTxt); 
             
            _inputTxt.x = 10; 
            _inputTxt.y = sendBtn.y; 
        } 
    } 
} 
 
 
import flash.display.Sprite; 
import flash.events.MouseEvent; 
import flash.text.TextField; 
import flash.text.TextFieldAutoSize; 
import flash.text.TextFormat; 
 
class Button extends Sprite 
{ 
    private var _txt:TextField; 
    private var _txtFormat:TextFormat; 
    private var _deep:Sprite; 
    private var _spaceW:int = 6; 
    private var _spaceH:int = 3; 
     
    public function Button(label:String):void 
    { 
        _txtFormat = new TextFormat(); 
        _txtFormat.color = 0x00ff00; 
        _txtFormat.size = 13; 
         
        _txt = new TextField(); 
        _txt.autoSize = TextFieldAutoSize.LEFT; 
        _txt.text = label; 
        _txt.setTextFormat(_txtFormat); 
        _txt.mouseEnabled = false; 
        addChild(_txt); 
         
        draw(); 
        this.addEventListener(MouseEvent.ROLL_OVER,overHandler); 
        this.addEventListener(MouseEvent.ROLL_OUT,outHandler); 
    } 
     
    private function draw():void 
    { 
        _deep = new Sprite(); 
        _deep.graphics.clear(); 
        _deep.graphics.lineStyle(1.5,0x00ffff,0.8); 
        _deep.graphics.beginFill(0xff00ff,1); 
        _deep.graphics.drawRoundRect(0,0,_txt.textWidth + _spaceW *2 ,_txt.textHeight + _spaceH *2,5,5); 
        _deep.graphics.endFill(); 
        addChildAt(_deep,0); 
        _txt.x = _spaceW -1.5; 
        _txt.y = _spaceH - 1.5; 
    } 
     
    private function overHandler(e:MouseEvent):void 
    { 
        _txt.alpha = 0.7; 
    } 
     
    private function outHandler(e:MouseEvent):void 
    { 
        _txt.alpha = 1; 
    } 
}