How to wait for 3 seconds in ActionScript 2 or 3?
public function foo(param1, param2, param3) {
  //do something here
  //wait for 3 seconds
  //3 seconds have passed, now do something more
}

var timer:Timer = new Timer(3000);
timer.addEventListener(TimerEvent.TIMER, callback); // will call callback()
timer.start();

class Test {
    private var timer:Timer = new Timer(3000);

    public function foo(param1:int, param2:int, param3:int):void {
        // do something here
        timer.addEventListener(TimerEvent.TIMER, fooPartTwo);
        timer.start();
    }

    private function fooPartTwo(event:TimerEvent):void {
        timer.removeEventListener(TimerEvent.TIMER, fooPartTwo);
        timer = null;
        // 3 seconds have passed, now do something more
    }
}

function foo(param1:int, param2:int, param3:int):void {
    var x:int = 2; // you can use variables as you would normally

    // do something here

    var timer:Timer = new Timer(3000);
    var afterWaiting:Function = function(event:TimerEvent):void {
       timer.removeEventListener(TimerEvent.TIMER, afterWaiting);
       timer = null;

       // 3 seconds have passed, now do something more

       // the scope is retained and you can still refer to the variables you
       // used earlier
       x += 2;
    }

    timer.addEventListener(TimerEvent.TIMER, afterWaiting);
    timer.start();
}

var timer = setInterval(function, 3000, param1, param2);

function (param1, param2) {

// your function here
clearInterval(timer);

}

TweenMax.delayedCall(1, myFunction, ["param1", 2]);

function myFunction(param1:String, param2:Number):void
{
   trace("called myFunction and passed params: " + param1 + ", " + param2);
}

public function foo(param1, param2, param3) {
   //do something here
   trace("I gonna wait 3 seconds");

   TweenMax.delayedCall(3, function()
   {
       trace("3 seconds have passed");
   });
}