我正在建立测验，我需要计算进行测验的总时间。
和我需要显示在HH :: MM :: SS..any指针中花费的时间吗？

解决方案

new Date()。time返回以毫秒为单位的时间。

var nStart:Number = new Date().time;

// Some time passes

var nMillisElapsed:Number = new Date().time - nStart;

var strTime:String = Math.floor(nMillisElapsed / (1000 * 60 * 60)) + "::" + 
   (Math.floor(nMillisElapsed / (1000 * 60)) % 60) + "::" + 
   (Math.floor(nMillisElapsed / (1000)) % 60);

当数字小于10时填充零(感谢brian)

var now:Date; //
var startDate:Date;
var startTime:Number; 
// initialize timer and start it
function initTimer():void{
    startDate = new Date();
    startTime = startDate.getTime();
    //
    var timer:Timer = new Timer(1000,0); // set a new break
        timer.addEventListener(TimerEvent.TIMER, onTimer); // add timer listener
    //
    function onTimer():void{
        now=new Date();
        var nowTime:Number = now.getTime();
        var diff:Number = nowTime-startTime;
        var strTime:String = Math.floor(diff / (1000 * 60 * 60)) + ":" + 
                            zeroFill(Math.floor(diff / (1000 * 60)) % 60) + ":" + 
                            zeroFill(Math.floor(diff / (1000)) % 60);
        // display where you want
        trace('time elapsed : ' + strTime);
    }
    // fill with zero when number is less than 10
    function zeroFill(myNumber:Number):String{
        var zeroFilledNumber:String=myNumber.toString();
        if(myNumber<10){
            zeroFilledNumber = '0'+zeroFilledNumber;
        }
        return zeroFilledNumber;
    }

    // start TIMER
    timer.start();

}
initTimer();