mergeTimes.js

(function($)
{

function mergeArr(arr) {

    // Sort the array in descending order
    arr.sort(function(a, b) {
        return b.start - a.start;
    });

    for (var i = arr.length - 1; i > 0; i--) {
        if (arr[i].end == arr[i - 1].start) {
            arr[i].end = arr[i - 1].end;
            arr.splice(i - 1, 1);
        }
        else if(arr[i - 1].start > arr[i].start && arr[i - 1].start < arr[i].end)
    	{
    		if(arr[i - 1].end > arr[i].end)
    		{
    			arr[i].end = arr[i - 1].end;
    		}
    		arr.splice(i - 1, 1);
    	}
    }
    // Sort it again in reverse order.
    return arr.sort(function(a, b) {
        return a.start - b.start;
    });
}

function convertToUnixTimestamp(times)
{
	var arr = [];
	for (var i = 0; i < times.length ; i++) {
		arr.push(
			{
				start:moment(times[i].start, "HH:mm").unix(),
				end:moment(times[i].end, "HH:mm").unix()
			}
		);
	}
	return arr;
}

function convertUnixToTime(times)
{
	var arr = [];
	for (var i = 0; i < times.length ; i++) {
		arr.push(
			{
				start:moment.unix(times[i].start).format("HH:mm"),
				end:moment.unix(times[i].end).format("HH:mm")
			}
		);
	}
	return arr;
}

var times = [
    {start: "21:00", end: "03:00"}, 
	{start: "04:00",end: "06:00"}, 
    {start: "19:45", end: "21:00"}, 
    {start: "21:00", end: "00:00"}, 
];
var threeTime = convertToUnixTimestamp(times);
var mergedTimesUnix = mergeArr(threeTime);
var mergedTimes = convertUnixToTime(mergedTimesUnix);

console.log(mergedTimes)
/*var threeTime = [
    {start: 946688400, end: 946695600}, //1-3
	{start: 946695600,end: 946702800}, //3-5
    {start: 946706400, end: 946749600}, //6-18
    {start: 946738800, end: 946767600}, //15-23
];
*/
//console.log(mergeArr(threeTime));
//console.log(mergeArr(threeTime));


















































})(jQuery);