how to add time in moment js code example

Example 1: moment add seconds

var travelTime = moment().add(642, 'seconds').format('hh:mm A');// it will add 642 seconds in the current time and will give time in 03:35 PM format

var travelTime = moment().add(11, 'minutes').format('hh:mm A');// it will add 11 mins in the current time and will give time in 03:35 PM format; can use m or minutes 

var travelTime = moment().add(2, 'hours').format('hh:mm A');// it will add 2 hours in the current time and will give time in 03:35 PM format

Example 2: moment set time

const date = "2017-03-13";
const time = "18:00";

const timeAndDate = moment(date + ' ' + time);

console.log(timeAndDate);

Example 3: moment date add

var new_date = moment(startdate, "DD-MM-YYYY").add(5, 'days');