有你做翅膀，孤单都是坚强

flex 和 调用 js 接口

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" preinitialize="preinitializeHandler(event)" layout="horizontal">
 <mx:Script>
  <![CDATA[
   import aw.external.jsinterface.JSFunction;
   import aw.external.jsinterface.JSDynamic;
   import aw.external.JSInterface;
   static public const NOT_SAVED_ALERT:String = '\\\\n\\\\nYou have not saved data. Please, save data before close window.\\\\n Do you realy want to close window without save changes?\\\\n\\\\n';
   protected function preinitializeHandler(event:Event):void{
    JSInterface.initialize(this.systemManager.stage);
    if(JSInterface.navigator.appName.toLowerCase().indexOf('fox')>0){
     // For FireFox
     JSInterface.window.onbeforeunload = this.isDataSaved;
    }else{
     // For Internet Explorer, FireFox, Safari or other
     JSInterface.window.onbeforeunload = JSFunction.create("var text; if(!window.isFlexDataSaved){text='"+NOT_SAVED_ALERT+"';}; return text;");
    }
    JSInterface.window.isFlexDataSaved = false;
   } 
   protected function isDataSaved(event:JSDynamic=null):String{
    if(JSInterface.window.isFlexDataSaved) return "";
    if(event){
     event.returnValue = NOT_SAVED_ALERT;
    }
    return NOT_SAVED_ALERT;
   }
  ]]>
 </mx:Script>
 <mx:Button label="Save Data" click="{JSInterface.window.isFlexDataSaved = true}"/>
 <mx:Spacer width="100"/>
 <mx:Button label="Change Data" click="{JSInterface.window.isFlexDataSaved = false}"/>
</mx:Application>

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" preinitialize="preinitializeHandler(event)" layout="absolute">
 <mx:Script>
  <![CDATA[
   import aw.external.JSInterface;
   import aw.external.jsinterface.JSDynamic;
   
   import flash.utils.getTimer;
   
   import mx.controls.Alert;
   
   protected var _savedData:SharedObject;
   protected function preinitializeHandler(event:Event):void{
    JSInterface.initialize(this.systemManager.stage);
    JSInterface.window.onbeforeunload = this.saveDataHandler;
    this._savedData = SharedObject.getLocal('saved_data');
    Alert.show('Saved data:', this._savedData.data.time);
   }
   // For Internet Explorer, Fire Fox, Safari and others
   protected function saveDataHandler(event:JSDynamic=null):void{
    Alert.show('save started');
    var i:Number = getTimer();
    while(getTimer()-i<3000); // generate and save data timeout
    // you can not send data to server, but you can save data locally as temporary
    this._savedData.data.time = (new Date()).time;
    this._savedData.flush();
    Alert.show('data saved as SharedObject');
   }
  ]]>
 </mx:Script>
</mx:Application>