Create a range of hours and minutes given start and end time in a day in Javascript

time-interval.js

// Add to your html header
<script src="https://momentjs.com/downloads/moment.js"></script>

// Add these two functions
function buildInterval(start, end){
	var range = [];
	var time = moment.duration(start).asSeconds();
	if(end<=start)
		var endtime = moment.duration(end).asSeconds()+86400;
	else
		var endtime = moment.duration(end).asSeconds();
	var step = 1800;
	
	while(time <= endtime){
		var formatted =  padDigits(Math.floor(moment.duration(time,'seconds').asHours()%24),2) + ':' + padDigits(moment.duration(time,'seconds').minutes(),2);
		range.push(formatted);
		time=time+step;
	}
	
	console.log(JSON.stringify(range));
	return range;
}

function padDigits(number, digits) {
    return Array(Math.max(digits - String(number).length + 1, 0)).join(0) + number;
}

/*
Example:
buildInterval("23:00","22:30");
Output: ["23:00","23:30","00:00","00:30","01:00","01:30","02:00","02:30","03:00","03:30","04:00","04:30","05:00","05:30","06:00","06:30","07:00","07:30","08:00","08:30","09:00","09:30","10:00","10:30","11:00","11:30","12:00","12:30","13:00","13:30","14:00","14:30","15:00","15:30","16:00","16:30","17:00","17:30","18:00","18:30","19:00","19:30","20:00","20:30","21:00","21:30","22:00","22:30"]
 */