Javascript 时间 倒计时

更新一下时间倒计时插件（jQUery）

$.fn.genTimer = function (e) {
    function u(e) {
    var t = Math.floor(e / n),
        r = Math.floor((e - t * n) / 36e5),
        i = Math.floor((e - t * n - r * 1e3 * 60 * 60) / 6e4),
        s = Math.floor((e - t * n - r * 1e3 * 60 * 60 - i * 1e3 * 60) / 1e3);
    return {
        hours: ("0" + r).slice(-2),
        minutes: ("0" + i).slice(-2),
        seconds: ("0" + s).slice(-2),
        dates: t
    }
    }
    if (this.data("handled")) return this;
    this.data("handled", !0);
    var t = {
    beginTime: new Date,
    day_label: "day",
    days_label: "days",
    unitWord: {
        hours: ":",
        minutes: ":",
        seconds: ""
    },
    type: "",
    callbackOnlyDatas: !1
    },
    n = 864e5,
    r = $.extend({}, t, e),
    i = this;
    r.targetTime = r.targetTime.replace(/\-/g, "/");
    r.targetTime = isNaN(r.targetTime) ? r.targetTime : parseInt(r.targetTime);37     var s = new Date(r.targetTime) - new Date(r.beginTime),
    o = function () {
        if (s < 0) {
        r.callback.call(i, r.callbackOnlyDatas ? {
            hours: "00",
            minutes: "00",
            seconds: "00",
            dates: 0
        } : "00" + r.unitWord.hours + "00" + r.unitWord.minutes + "00");
        clearInterval(i.interval)
        } else {
        var e = u(s);
        if (r.callbackOnlyDatas) r.callback.call(i, e);
        else if (r.type == "day") {
            s >= n * 2 ?
            r.callback.call(i, '<span class="day_count">' + e.dates + '</span><span class="day">' + r.days_label + '</span><span class="day_seconds">' + e.hours + r.unitWord.hours + e.minutes + r.unitWord.minutes + e.seconds + r.unitWord.seconds + "</span>")
            : (
            s >= n ?
            r.callback.call(i, '<span class="day_count">' + e.dates + '</span><span class="day">' + r.day_label + '</span><span class="day_seconds">' + e.hours + r.unitWord.hours + e.minutes + r.unitWord.minutes + e.seconds + r.unitWord.seconds + "</span>")
            : r.callback.call(i, '<span class="seconds">' + e.hours + r.unitWord.hours + e.minutes + r.unitWord.minutes + e.seconds + r.unitWord.seconds + "</span>")
            );
        }
        else if (r.type == "diffNoDay") {
            var t = e.hours;
            s >= n && (t = Number(e.dates * 24) + Number(e.hours));
            r.callback.call(i, '<span class="hours">' + t + '</span><span class="miniutes">' + r.unitWord.hours + e.minutes + '</span><span class="senconds">' + r.unitWord.minutes + e.seconds + r.unitWord.seconds + "</span>")
        } else {
            var t = e.hours;
            s >= n && (t = Number(e.dates * 24) + Number(e.hours));
            r.callback.call(i, '<span class="seconds">' + t + r.unitWord.hours + e.minutes + r.unitWord.minutes + e.seconds + r.unitWord.seconds + "</span>")
        }
        }
        s -= 1e3
    };
    i.interval = setInterval(o, 1e3);
    o();
    return this
};

调用：

$(this).genTimer({
    beginTime: new Date(),//开始时间
    targetTime: new Date(),//结束时间
    type: "day",
    callback: function (e) {
        this.html(e)
    }
})

附加：一个C#获取现在到1970-1-1毫秒算法

 string times = (DateTime.Now.Subtract(DateTime.Parse("1970-1-1")).TotalMilliseconds - (8 * 60 * 60 * 1000)).ToString("F0");