JS倒数时间

var d1 = new Date().getTime();

经研究表明getTime()是获取当前时间距离1970-01-01得出的 毫秒

而且这个方法有参数

var d2 = new Date().getTime(2014,11,31);

得出了2014-12-31到1970-01-01的毫秒数

具体实现主代码如下

<script type="text/javascript">  
        var countdown = {  
            tian: 0,  
            shi:0,  
            fen:0,  
            miao:0  
        };  
        var d1;  
        var d2;  
        var difference;  
        $(function () {  
            setInterval(takeCount,1000);  
        })  
         function takeCount() {  
            d1 = new Date().getTime();  
            d2 = new Date(2014, 11, 31).getTime();  
            difference = (d2 - d1) / 1000; //从今天开始算起到今年结束的秒  
            countdown.tian = Math.floor(difference / (60 * 60 * 24));  
            difference -= (countdown.tian * (60 * 60 * 24));  
            countdown.shi = Math.floor(difference / (60 * 60));  
            difference -= (countdown.shi * (60 * 60));  
            countdown.fen = Math.floor(difference / 60);  
            difference -= (countdown.fen * 60);  
            countdown.miao = Math.floor(difference);  
            $("#tian").html(countdown.tian);  
            $("#shi").html(countdown.shi);  
            $("#fen").html(countdown.fen);  
            $("#miao").html(countdown.miao);  
        }  
    </script>  
<body>距离今年结束还有<span id="tian"></span>天<span id="shi"></span>小时<span id="fen"></span>分钟<span id="miao"></span>秒<body>

 

posted @ 2014-04-18 17:33  行进  阅读(455)  评论(2)  编辑  收藏  举报