抢购代码

function newTimeRun(nowTime, beginTime, overTime,classname){    var unStartTimeLength =   new Date(beginTime) - new Date(nowTime),//未开始的时间长度    //var unStartTimeLength =   new Date(beginTime).getTime() - new Date(nowTime).getTime(),//未开始的时间长度        endTimeLength = new Date(nowTime) - new Date(overTime),//已过期的时间长度        timingLength =  new Date(overTime) -  new Date(nowTime);//抢购中的时间长度    //未开始    if(unStartTimeLength > 0){        countDown(unStartTimeLength,function(time){                var hour = formatNum(time[0] * 24 + time[1]),                    min = formatNum(time[2]),                    sec = formatNum(time[3]);                classname.html(‘<span class="timeTxt">离特惠开始还剩 <span class="remain">‘ + hour + ‘:‘ + min + ‘:‘ + sec +‘</span></span>‘)            },            function(){                countDown(timingLength,function(time){                    var hour = time[0] * 24 + time[1],                        min = time[2],                        sec = time[3];                    classname.html(‘<span class="timeTxt">离特惠结束还剩 <span class="remain">‘ + hour + ‘:‘ + min + ‘:‘ + sec +‘</span></span>‘);                },function(){                    classname.html(‘<span class="timeTxt">本场特惠已结束</span>‘);                })            });    }    //过期    else if(endTimeLength >=0){        classname.html(‘<span class="timeTxt">本场特惠已结束</span>‘);    }    //开始-结束    else{        countDown(timingLength,function(time){            var hour = formatNum(time[0] * 24 + time[1]),                min = formatNum(time[2]),                sec = formatNum(time[3]);            classname.html(‘<span class="timeTxt">离特惠结束还剩 <span class="remain">‘ + hour + ‘:‘ + min + ‘:‘ + sec +‘</span></span>‘);        },function(){            classname.html(‘<span class="timeTxt">本场特惠已结束</span>‘);        })    }}

function countDown(times, fn, endFn) {    if (typeof times === "number") {        times = calculateTime(times);    } else if (Object.prototype.toString.apply(times) === "[object Date]") {        var ms = times.getTime() - new Date().getTime()        times = calculateTime(ms);        setTimeout(function () {            countDown(times, fn, endFn);        }, ms % 1000);        return;    }    fn(times);    // 一开始先执行一次    var intervalMac = setInterval(function () {        var timesLen = times.length,            scales = [24, 60, 60],            scalesLen = scales.length;        for (var i = timesLen; i--;) {            if (times[i] > 0) {                times[i] = times[i] - 1;                break;            }            // 等于0，非首位的处理            if (i !== 0) {                times[i] = scales[scalesLen -(timesLen - i)] - 1;            } else { // 一直到首位都为0，倒计时结束                for (var j = 0; j < times.length; j++) {                    times[j] = 0;                }                clearInterval(intervalMac);                return;            }        }        fn(times);        if(typeof endFn === "function"){            var isEnd = true;            for(var i = 0,len = times.length;i < len;i++){                if(times[i] !== 0){                    isEnd = false;                    break;                }            }            if(isEnd){                endFn(times);            }        }    }, 1000);}//把毫秒转换成数组[day, hour, minute, second]function calculateTime(time) {    if (time < 0) {        return [0, 0, 0, 0];    }    time = Math.floor(time / 1000);    var times = [], scales = [86400, 3600, 60];    for (var i = 0; i < scales.length; i++) {        times.push(Math.floor(time / scales[i]));        time %= scales[i];    }    times.push(time);    return times;}

调用

$(".box3").each(function(i,elem){    var date = new Date();

    var uStartTime = $(elem).attr("zy-s-time"),        uEndTime = $(elem).attr("zy-e-time"),        timeSpan = $(".timeW",elem);    newTimeRun(date,uStartTime,uEndTime,timeSpan);})

注意时间格式