[SOLVED] Adding two durations together with Datejs or Momentjs, and formating them like "HH:mm:ss"

Adding two durations together with Datejs or Momentjs, and formating them like "HH:mm:ss"

I would like to add 2 durations together for example: 00:04:00 + 07:23:00 = 07:27:00

    var std_count = "00:06:00";
    var std_create = "07:23:00";

    var time_2 = moment.duration(std_count, "HH:mm:ss");
    var time_3 = moment.duration(std_create, "HH:mm:ss");
    var final = time_2.add(time_3, "HH:mm:ss");

ps. I was unnable to find this kind of addition in moment js or date js. Thanks in advance.

Solution

Using DateJS with time.js included, you can take advantage of the TimeSpan class.

Example

var std_count = Date.parse("00:06:00").getTimeOfDay();
var std_create = Date.parse("07:23:00").getTimeOfDay();

var final = std_count.add(std_create);

final.toString("HH:mm:ss");
// "07:29:00"

or you could pull this off in one chained sequence:

Date.parse("00:06:00")
    .getTimeOfDay()
    .add(Date.parse("07:23:00").getTimeOfDay())
    .toString("HH:mm:ss");

Hope this helps.