Flex和JS的相互调用，传参

<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"    xmlns:s="library://ns.adobe.com/flex/spark"    xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"   initialize="init(event)"><fx:Script><![CDATA[import flash.external.ExternalInterface;import mx.controls.Alert;import mx.events.FlexEvent;protected function init(event:FlexEvent):void{ExternalInterface.addCallback("myFlexFunction",myFunc);//接口函数，调用Flex的方法}public function myFunc(str:String,b:Boolean):Number {Alert.show("JS调用Flex,传递的参数: " + str);return Number(b);}public function callWrapper():void {var f:String = "changeDocumentTitle";//js函数名var m:String = ExternalInterface.call(f,"真的假的");this.txt_Msg.text = m;}protected function button1_clickHandler(event:MouseEvent):void{callWrapper();}]]></fx:Script><fx:Declarations><!-- 将非可视元素（例如服务、值对象）放在此处 --></fx:Declarations><s:Button x="77" y="58" label="按钮" click="button1_clickHandler(event)"/><s:TextArea id="txt_Msg" x="77" y="122" width="472" height="131"/></s:Application>

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function changeDocumentTitle(a) {window.document.title = a;alert("Flex传递过来的参数: " + a);callApp();    return "Flex调用JS successful";}function callApp() {    var x = Main.myFlexFunction("基站解析",true);    alert(x);}

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还有一句需要添加到Flex项目自动生成的Html文件里

<script type="text/javascript" src="js/GoogleLBS.js"></script>

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OK，源代码在下面