Check diff range of hours, minutes, second in Javascript..

diff_range_of_hours.js

   var startTime = moment('12:00:01', 'hh:mm:ss a');
   var endTime = moment('13:00:10' , 'hh:mm:ss a');
   var totalHours = (endTime.diff(startTime, 'hours'));
   var totalMinutes = endTime.diff(startTime, 'minutes');
   var clearMinutes = totalMinutes % 60;
   console.log(totalHours + " hours and " + clearMinutes + " minutes");