function timeago(dateTimeStamp) {
            //dateTimeStamp是一个时间毫秒，注意时间戳是秒的形式，在这个毫秒的基础上除以1000，就是十位数的时间戳。13位数的都是时间毫秒。
            var minute = 1000 * 60; //把分，时，天，周，半个月，一个月用毫秒表示
            var hour = minute * 60;
            var day = hour * 24;
            var week = day * 7;
            var halfamonth = day * 15;
            var month = day * 30;
            var now = new Date() - 1; //获取当前时间毫秒
            var diffValue = now - dateTimeStamp; //时间差

            if (diffValue < 0) {
                return;
            }
            var minC = diffValue / minute; //计算时间差的分，时，天，周，月
            var hourC = diffValue / hour;
            var dayC = diffValue / day;
            var weekC = diffValue / week;
            var monthC = diffValue / month;
            var result;
            if (monthC >= 1 && monthC <= 3) {
                result = " " + parseInt(monthC) + "月前";
            } else if (weekC >= 1 && weekC <= 3) {
                result = " " + parseInt(weekC) + "周前";
            } else if (dayC >= 1 && dayC <= 6) {
                result = " " + parseInt(dayC) + "天前";
            } else if (hourC >= 1 && hourC <= 23) {
                result = " " + parseInt(hourC) + "小时前";
            } else if (minC >= 1 && minC <= 59) {
                result = " " + parseInt(minC) + "分钟前";
            } else if (diffValue >= 0 && diffValue <= minute) {
                result = "刚刚";
            } else {
                var datetime = new Date();
                datetime.setTime(dateTimeStamp);
                var Nyear = datetime.getFullYear();
                var Nmonth =
                    datetime.getMonth() + 1 < 10
                        ? "0" + (datetime.getMonth() + 1)
                        : datetime.getMonth() + 1;
                var Ndate =
                    datetime.getDate() < 10
                        ? "0" + datetime.getDate()
                        : datetime.getDate();
                var Nhour =
                    datetime.getHours() < 10
                        ? "0" + datetime.getHours()
                        : datetime.getHours();
                var Nminute =
                    datetime.getMinutes() < 10
                        ? "0" + datetime.getMinutes()
                        : datetime.getMinutes();
                var Nsecond =
                    datetime.getSeconds() < 10
                        ? "0" + datetime.getSeconds()
                        : datetime.getSeconds();
                result = Nyear + "-" + Nmonth + "-" + Ndate;
            }
            return result;
        },