add time to date moment code example

Example 1: moment date add

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

Example 2: 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');