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限时抢购-倒计时

<!DOCTYPE HTML>
<html>
<head>
    <meta charset=utf-8"/>
    <title>团购——限时抢</title>
</head>
<body>
<div>
    <div class="time">还剩 <span id="LeftTime"></span></div>
</div>
<script>
    function FreshTime() {
        var endtime = new Date("2017/10/15,12:20:12");//结束时间
        var nowtime = new Date();//当前时间
        var lefttime = parseInt((endtime.getTime() - nowtime.getTime()) / 1000);
        d = parseInt(lefttime / (24 * 3600));
        h = parseInt(lefttime /3600%24);
        m = parseInt(lefttime/60%60);
        s = parseInt(lefttime % 60);

        document.getElementById("LeftTime").innerHTML = d + "天" + h + "小时" + m + "分" + s + "秒";
        if (lefttime <= 0) {
            document.getElementById("LeftTime").innerHTML = "团购已结束";
            clearInterval(sh);
        }
    }

    var sh;
    sh = setInterval(function () {
        FreshTime()
    },500);

</script>

</body>
</html>

效果图：

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原文地址：https://www.cnblogs.com/sunxirui00/p/7532582.html