moment add date to time code example
Example 1: moment js add day
var new_date = moment(startdate, "DD-MM-YYYY").add(5, 'days');
Example 2: moment.js format
moment().format('MMMM Do YYYY, h:mm:ss a'); // December 4th 2020, 1:04:29 pm
moment().format('dddd'); // Friday
moment().format("MMM Do YY"); // Dec 4th 20
moment().format('YYYY [escaped] YYYY'); // 2020 escaped 2020
moment().format(); // 2020-12-04T13:04:29-05:00