Calculate number of days and time between two dates

diff-dates.js

/**
diffDates returning number of days and time string
*/
function diffDates(a,b) {
	var d = moment(a).diff(b);
	var m = d / (3600*1000*24);
	var m1 = Math.floor(m);
	var t = d-(m1*3600*1000*24);
	return {
		days: m1,
		time: t,
        timeStr: moment(t).utc().format('HH:mm')
	}
}

diffDates(
	moment(), moment().add(-1,'day').add(-10,'minutes'))

// Output = 1day e 10minutos
{days: 1, time: 600000, timeStr: "00:10"}