Momentjs function to check whether a time fits within a set time range, in hours and minutes, excluding dates.

withinTime.js

/*
Dates are ignored, only tests moment objects are within a time range of hours and minutes. 

Supports times past midnight e.g. 01:00 is in between 23:00 and 03:00 etc.
*/

var withinTime = function(start, end, t) {
  //normalise year/month/day
  var now = moment();
  start.set({ year: now.year(), month: now.month(), day: now.day(), seconds: 0 });
  end.set({ year: now.year(), month: now.month(), day: now.day(), seconds: 0 });
  t.set({ year: now.year(), month: now.month(), day: now.day(), seconds: 0 });
    
  var result = false;
  if (start > end){
    result = ((t <= end) || (t >= start));
  } else {
    result = ((t >= start) && (t <= end));
  }
  
  return result;
}