7.4.4 简单实例
Flex代码：
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="initApp()"
layout="absolute" width="200" height="160">
<mx:Script>
<![CDATA[
import mx.controls.Alert;
public function sayHelloFromFlex(message:String):String{
Alert.show(message);
var str:String = "Echo from Flex: "+ message;
return str;
}
public function initApp():void {
Security.allowDomain("*");
Security.allowInsecureDomain("*");
ExternalInterface.addCallback("sayHelloFromFlex",sayHelloFromFlex);
}
public function invokeJsFunc():void {
var str:String = ExternalInterface.call("sayHelloFromJs","Hello,Javascript.");
Alert.show(str);
}
]]>
</mx:Script>
<mx:Button x="39" y="68" label="Invoke JS Function" click="invokeJsFunc()"/>
</mx:Application>
Html代码：
<html>
<head> </head>
<body scroll="no">
<script>
function sayHelloFromJs(value){
alert(value);
return "Echo from Js: " + value;
}
function invokeFlexFunc(){
var message = "Hello,Flex.";
var str = getSWFObject("MyFlexApps").sayHelloFromFlex(message);
alert(str);
}
function getSWFObject(movieName)
{
if(document[movieName])
{
return document[movieName];
}else if(window[movieName]){
return window[movieName];
}else if(document.embeds && document.embeds[movieName]){
return document.embeds[movieName];
}else{
return document.getElementById(movieName);
}
}
</script>
<object type='application/x-shockwave-flash'
data='FlexAndJs.swf' width='200' height='160'
name='test' id='MyFlexApps'>
<param name='allowScriptAccess' value='always' />
<param name='movie' value='FlexAndJs.swf' />
<param name='quality' value='high' />
<param name='scale' value='noScale' />
<param name='wmode' value='transparent' />
</object>
<input type="button" value="InvokeFlexFunction" onclick="invokeFlexFunc()"/>
</body>
</html>