毫秒或者秒轉換為日期格式

function timeToMillion(startStr, endStr) {
        var times;
　　　　　　//如果是2個參數就是時間差
        if (endStr) {
            var startT = new Date(startStr).getTime()
            var endT = new Date(endStr).getTime()
            times = (endT - startT) / 1000
　　　　　　// 如果是一個參數，參數值是秒數

        } else {
            times = startStr
        }
        var day, hour, minute,endOutStr;
        if (times > 0) {
            // console.log(times)
            day = Math.floor(times / (60 * 60 * 24));
            hour = Math.floor(times / (60 * 60)) - (day * 24);
            minute = Math.floor(times / 60) - (day * 24 * 60) - (hour * 60);
            // second = Math.floor(times) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60);
            if (parseInt(day) != 0) {
                endOutStr = day + "天" + hour + "小時" + minute + "分鐘"
            } else {
                if (parseInt(hour) != 0) {
                    endOutStr = hour + "小時" + minute + "分鐘"
                } else {
                    endOutStr = minute + "分鐘"
                }
            }
        }else{
            endOutStr = 0
        }
        // if (day <= 9) day = '0' + day;
        // if (hour <= 9) hour = '0' + hour;
        // if (minute <= 9) minute = '0' + minute;
        // if (second <= 9) second = '0' + second;
        return endOutStr
    }