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); } } }