ActionScript 3 接收 JavaScript函数返回值

MXML:

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns="*" 
    creationComplete="onCreationComplete()">
    
    <mx:Script source="ExternalInterfaceASJSReturn.as" />
    
    <mx:Panel height="300" width="500" title="ExternalInterface : Returning a value to ActionScript from JavaScript">
        <mx:Canvas height="100%" width="100%">
            <mx:Button y="6" label="Get Browser Info" id="submitButton" width="118" x="180">
            </mx:Button>
            <mx:TextArea x="5" y="34" width="468" height="228" id="tArea"/>
        </mx:Canvas>
    </mx:Panel>
</mx:Application>

 
ExternalInterfaceASJSReturn.as:

import flash.external.ExternalInterface;
import flash.events.MouseEvent;


private function onCreationComplete():void
...{
    submitButton.addEventListener("click", onSubmitClick);
}

private function onSubmitClick(event:MouseEvent):void
...{
    if(ExternalInterface.available)
    ...{
        //call the JavaScript function, and store the return value
        //in a variable
        var info:Object = ExternalInterface.call("getBrowserInfo");
        
        var sb:String = null;
        
        //loop through the results
        for(var x:String in info)
        ...{
            sb = sb + x + " : " + info[x] + " ";
        }

        //print them out to the TextArea
        tArea.text = sb.toString();
    }
}

JavaScript:

function getBrowserInfo()
    ...{
        var docElement = document.documentElement;

        var o = new Object();
        
            o.href = location.href;
            o.lang = docElement.lang;
            o.offsetTop = docElement.offsetTop;
            o.offsetLeft = docElement.offsetLeft;
            o.offsetWidth = docElement.offsetWidth;
            o.offsetHeight = docElement.offsetHeight;
            o.scrollTop = docElement.scrollTop;
            o.scrollLeft = docElement.scrollLeft;
            o.scrollHeight = docElement.scrollHeight;
            o.scrollWidth = docElement.scrollWidth;
            o.clientHeight = docElement.clientHeight;
            o.clientWidth = docElement.clientWidth;
            o.width = document.width;
            o.height = document.height;
            o.domain = document.domain;
            o.lastModified = document.lastModified;        
                
        return o;
    }