Flash和js交互的效率分析

                      var time:int = getTimer();
                      for (var i:int = 0; i < 50000; i++)
                     {
                           ExternalInterface.call( "noReturn" );     //8371ms
                     }
                      trace(getTimer() - time);
                     
                      var time2:int = getTimer();
                      for (var j :int = 0; j < 50000; j++)
                     {
                           ExternalInterface.call( "hasReturn" );    //8371ms
                     }
                      trace(getTimer() - time2);

            function hasReturn(){
              return "2";
            }
           
            function noReturn(){
            }