js html 页面倒计时 精确到秒_html/css_WEB-ITnose

    <meta charset="utf-8">   <div id="CountMsg" class="HotDate">    <span id="t_d">00天</span>    <span id="t_h">00时</span>    <span id="t_m">00分</span>    <span id="t_s">00秒</span>
</div><script type="text/javascript">    function getRTime(){        var EndTime= new Date('2014/10/23 10:00:00'); //截止时间 前端路上 http://www.51xuediannao.com/qd63/        var NowTime = new Date();        var t =EndTime.getTime() - NowTime.getTime();        /*var d=Math.floor(t/1000/60/60/24);        t-=d*(1000*60*60*24);        var h=Math.floor(t/1000/60/60);        t-=h*60*60*1000;        var m=Math.floor(t/1000/60);        t-=m*60*1000;        var s=Math.floor(t/1000);*/        var d=Math.floor(t/1000/60/60/24);        var h=Math.floor(t/1000/60/60%24);        var m=Math.floor(t/1000/60%60);        var s=Math.floor(t/1000%60);        document.getElementById("t_d").innerHTML = d + "天";        document.getElementById("t_h").innerHTML = h + "时";        document.getElementById("t_m").innerHTML = m + "分";        document.getElementById("t_s").innerHTML = s + "秒";    }    setInterval(getRTime,1000);    </script>