How to get total hours HH:MM format using Moment.js?

Question

I want to calculate the week total time using Moment.js. Please advise. This is what I tried so far:

total = "00:00";
for (var i in json_obj) {

    var timeEnd = json_obj[i].END;
    var timeStart = json_obj[i].START;

    var timeDiff = moment.utc(moment(timeEnd, "HH:mm:ss").diff(moment(timeStart, "HH:mm:ss"))).format("HH:mm");
    var res = timeDiff;
    total = moment().add(res);

Answer 1

This is what i have achieved with the help of SO and moment.js documentation.

var startTime = moment("06:10:00", 'hh:mm');
var endTime = moment("08:00:00", 'hh:mm');

var totalSec = endTime.diff(startTime, 'seconds');

var hours = parseInt(totalSec / 3600) % 24;
var minutes = parseInt(totalSec / 60) % 60;
var seconds = totalSec % 60;

var result = (hours < 10 ? "0" + hours : hours) + ":" + (minutes < 10 ? "0" + minutes : minutes) + ":" + (seconds < 10 ? "0" + seconds : seconds);

The solution is not wholly implemented with moment but combining old school logic with momentjs.

But this will fulfill your requirement.

OR

To remove old school logic and truly go with moment use below code.

var result = moment().startOf('day')
        .seconds(totalSec)
        .format('H:mm')

JSFiddle with both version.