JAVASCRIPT

momentjs date and time string add minutes

moment(date, "DD-MM-YYYY hh:mm:ss")
                        .add(10, 'minutes')
                        .format('DD/MM/YYYY hh:mm:ss');

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

moment add

moment().add(Number, String);
moment().add(Duration);
moment().add(Object);

moment add

moment([2010, 0, 31]);                  // January 31
moment([2010, 0, 31]).add(1, 'months'); // February 28