flex与JS交互

发布时间：2020-12-15 04:24:26 所属栏目：百科来源：网络整理

导读：Flex 与 JavaScript 交互，主要依靠Flex的ExternalInterface，其提供了addCallBack和call方法. 下面的例子将演示Flex调用javascript，和javascript调用Flex js 代码 function hello(param) {?? ??? alert(param);?? ??? return "jsp Hello:" + param;?? }??

Flex 与 JavaScript 交互，主要依靠Flex的ExternalInterface，其提供了addCallBack和call方法.

下面的例子将演示Flex调用javascript，和javascript调用Flex

js 代码

function hello(param) {??
??? alert(param);??
??? return "jsp Hello:" + param;??
}??
?
function callFlexFunction() {??
??? var x = document.getElementById("flexObject").flexHelloWorld("Hello","world");??
??? alert(x);??
}?

Flex 代码

<?xml version="1.0" encoding="utf-8"?>?
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"?
??? initialize="initApp()">?
??????
??? <mx:Script>?
??????? <![CDATA??
??????????? import mx.controls.Alert;??
??????????
??????????? public function flexHelloWorld(param1:String,param2:String):String {??
??????????????? Alert.show("param1: " + param1 + "; param2:" + param2);??
??????????????? return "Hello " + param1 + param2;??
??????????? }??
??????????????
??????????? public function initApp():void {??
??????????????? ExternalInterface.addCallback("flexHelloWorld",flexHelloWorld);??
??????????? }??
??????????????
??????????? public function jspHello():void {??
??????????????? var s:String = ExternalInterface.call("hello","Flex");??
??????????????? Alert.show(s);??
??????????? }??
??????????????
??????? ]]>?
??? </mx:Script>?
??????
??? <mx:Button x="52" y="58" label="call javascript" click="jspHello()"/>?
??????
</mx:Application>

（编辑：李大同）

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