AS3 setTimeOut、setInterval、Timer 的区别和用法

setTimeOut：设置超时时间，只会执行一次！ 

setInterval：设置一个间隔时间，间隔多久会触发一次！除非 remove，否则会永久执行下去！ 

Timer：设置一个间隔时间，有次数限制，只执行制定次数！ 

 

参数说明： 

setTimeOut(函数名,延迟时间,参数); 

setInterval(函数名,延迟时间,参数); 

Timer(延迟时间，执行次数); 

 

举例： 

1.setTimeOut 

package { 
    import flash.display.Sprite; 
    import flash.utils.*; 
 
    public class SetTimeoutExample extends Sprite { 
        private var delay:Number = 1000; // delay before calling myDelayedFunction         
        public function SetTimeoutExample() { 
            var intervalId:uint = setTimeout(myDelayedFunction, delay, "Hello", "World"); 
        }  
        public function myDelayedFunction():void { 
            trace(arguments[0] + " " + arguments[1]); 
        } 
        public function clearTimeout():void  { 
            if(intervalId>0) { 
                         clearTimeout(intervalId); 
              } 
        } 
    } 
}

2.setInterval 

package { 
    import flash.display.Sprite;     import flash.utils.*; 
    public class SetIntervalExample extends Sprite { 
        private var intervalDuration:Number = 1000; // duration between intervals, in milliseconds 
        private var intervalId:uint; 
        private var counter:uint     = 0; 
        private var stopCount:uint     = 3; 
        public function SetIntervalExample() { 
            intervalId = setInterval(myRepeatingFunction, intervalDuration, "Hello", "World"); 
        } 
        public function myRepeatingFunction():void { 
            trace(arguments[0] + " " + arguments[1]); 
            counter++; 
            if(counter == stopCount) { 
                trace("Clearing Interval"); 
                clearInterval(intervalId);     
            } 
        } 
    } 
} 

3.Timer 

package { 
    import flash.utils.Timer; 
    import flash.events.TimerEvent; 
    import flash.display.Sprite; 
    public class TimerExample extends Sprite { 
        public function TimerExample() { 
            var myTimer:Timer= new Timer(1000, 2); 
            myTimer.addEventListener("Timer", timerHandler); 
            myTimer.start(); 
        } 
        public function timerHandler(event:TimerEvent):void { 
            trace("timerHandler: " + event); 
        } 
    }
}