js 面向对象实现多个“倒计时器”

时间：2010-10-09 来源：小炒花生米

代码 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>JavaScript测试文件</title>
    </head>
    <body>
       <div><span id="hour0">0</span>小时</div>
       <div><span id="minute0">0</span>分</div>
       <div><span id="seconds0">10</span>秒</div>
       <br/>
       <div><span id="hour1">1</span>小时</div>
       <div><span id="minute1">31</span>分</div>
       <div><span id="seconds1">31</span>秒</div>
       <br/>
       <div><span id="hour2">2</span>小时</div>
       <div><span id="minute2">32</span>分</div>
       <div><span id="seconds2">32</span>秒</div>
       <br/>
        <div><span id="hour3">3</span>小时</div>
       <div><span id="minute3">33</span>分</div>
       <div><span id="seconds3">33</span>秒</div>
       <br/>
        <div><span id="hour4">4</span>小时</div>
       <div><span id="minute4">34</span>分</div>
       <div><span id="seconds4">34</span>秒</div>
       <br/>
    </body>
</html>

<script type="text/javascript">
//名山计时器：
function msTimeCount(){
    this._hour=0;         //“小时”数
    this._minute=0;         //“分”数
    this._seconds=0;     //“秒”数
    //
    this._hourHtmlObj={};//“小时”html对象
    this._minuteHtmlObj={};//“分”html对象
    this._secondsHtmlObj={};//“秒”html对象
    //
    this._totalSeconds=0;//总秒数
};
msTimeCount.prototype={
    //1.获取对象
    $:function(ID){
        return document.getElementById(ID);
    },
    //2.初始化：
    /*
     * arrTime:        传入时间数组，格式为[1,30,30]，代表 1小时30分30秒;
     * arrHtmlObj:    更新时间数据的Html对象数组，格式为["hour","minute","seconds"];
    */
    init:function(arrTime,arrHtmlObj){
        var _this=this;
        _this._hour=parseInt(arrTime[0]);
        _this._minute=parseInt(arrTime[1]);
        _this._seconds=parseInt(arrTime[2]);
        _this._hourHtmlObj=_this.$(arrHtmlObj[0]);
        _this._minuteHtmlObj=_this.$(arrHtmlObj[1]);
        _this._secondsHtmlObj=_this.$(arrHtmlObj[2]);
        _this._totalSeconds=parseInt(_this._hour*60*60+_this._minute*60+_this._seconds);
        //开始计时：
        _this.timeCount();

    },
    //3.计时器：
    timeCount:function(){

        var _this=this;
        var tmpTimeCount=setInterval(
            function(){
                _this._totalSeconds--;
                //alert(_this._totalSeconds);
                _this.refreshTime();
                if(_this._totalSeconds<1){
                    clearInterval(tmpTimeCount);
                    return;
                }

            }
            ,1000);
    },
    //4.刷新页面时间:
    refreshTime:function(){
        var _this=this;
        if(_this._totalSeconds>0){
            _this._hour=parseInt(_this._totalSeconds/3600);
            _this._minute=parseInt((_this._totalSeconds-_this._hour*3600)/60);
            _this._seconds=_this._totalSeconds-_this._hour*3600-_this._minute*60;

        }else{
            _this._hour=_this._minute=_this._seconds=0;
        }
        _this._hourHtmlObj.innerHTML=_this._hour;
        _this._minuteHtmlObj.innerHTML=_this._minute;
        _this._secondsHtmlObj.innerHTML=_this._seconds;

    }
}

var timeCount0=new msTimeCount();
timeCount0.init([0,0,10],["hour0","minute0","seconds0"]);

var timeCount1=new msTimeCount();
timeCount1.init([1,31,31],["hour1","minute1","seconds1"]);

var timeCount2=new msTimeCount();
timeCount2.init([2,32,32],["hour2","minute2","seconds2"]);

var timeCount3=new msTimeCount();
timeCount3.init([3,33,33],["hour3","minute3","seconds3"]);

var timeCount4=new msTimeCount();
timeCount4.init([4,34,34],["hour4","minute4","seconds4"]);