Javascript与Flash通讯Demo

as:

package {
	  import adobe.utils.CustomActions;
	  import flash.display.*;
	  import flash.events.*;
	  import flash.utils.Timer;
	  import flash.external.ExternalInterface;
	  
	  public class Test extends Sprite {
	  	  
	  	  public function Test() {
	  	  	  addExternalInterface();
	  	  }

private function addExternalInterface():void {
	  	  	  function hello(sname:String):void {
	  	  	  	  trace("hello," + sname);
	  	  	  }
	  	  	  
	  	  	  function isJavaScriptReady():Boolean {
	  	  	  	  var isReady:Boolean = ExternalInterface.call("isJSReady");
	  	  	  	  return isReady;
	  	  	  }
	  	  	  
	  	  	  function jsReadyHandler():void {
	  	  	  	  trace("javascript js ready");
	  	  	  	  ExternalInterface.addCallback("hello", hello);
	  	  	  	  ExternalInterface.call("flashReadyHandler");
	  	  	  }
	  	  	  
	  	  	  if(ExternalInterface.available){
	  	  	  	  try {
	  	  	  	  	  if (isJavaScriptReady()) {
	  	  	  	  	  	  jsReadyHandler();
	  	  	  	  	  }else{
	  	  	  	  	  	  var timerReady:Timer = new Timer(100, 0);
	  	  	  	  	  	  timerReady.addEventListener(TimerEvent.TIMER,function(evt:TimerEvent):void {
	  	  	  	  	  	  	  trace("checking...");
	  	  	  	  	  	  	  if (isJavaScriptReady()) {
	  	  	  	  	  	  	  	  Timer(evt.target).stop();
	  	  	  	  	  	  	  	  jsReadyHandler();
	  	  	  	  	  	  	  }
	  	  	  	  	  	  });
	  	  	  	  	  	  timerReady.start();
	  	  	  	  	  }
	  	  	  	  }catch (err:SecurityError) {
	  	  	  	  	  trace(err.message );
	  	  	  	  }catch (err:Error) {
	  	  	  	  	  trace(err.message );
	  	  	  	  }
	  	  	  }
	  	  }
	  }
}

html:

var _isJSReady = false;

function isJSReady(){
	  return _isJSReady;
};

window.onload = function(){
	  _isJSReady = true;
};

function flashReadyHandler(){
	  getFlash("test").hello("world");
};

function getFlash(id) {
	  if(navigator.appName.indexOf("Microsoft") != -1) {
	  	  return document.getElementById(id+"1");
	  }else{
	  	  return document.getElementById(id+"2");
	  }
};

</script>
</body>
</html>