基于momentjs计算范围内的工作日天数

  
　　　　 //计算工作日天数
        function workday_count(start,end) {
            var first = start.clone().endOf('week'); // end of first week
            var last = end.clone().startOf('week'); // start of last week
            var days = last.diff(first, 'days') * 5 / 7; // this will always multiply of 7
            var wfirst = first.day() - start.day(); // check first week
            if (start.day() == 0)--wfirst; // -1 if start with sunday
            var wlast = end.day() - last.day(); // check last week
            if (end.day() == 6)--wlast; // -1 if end with saturday
            return parseInt(wfirst + days + wlast); // get the total
        }
　　　　const daysRange = workday_count(moment(startTime), moment(endTime))

非原创，找不到来源了，感谢！