js new date letter month code example

Example 1: javascript month name

let date = new Date(2020, 05, 21); // 2020-06-21
let longMonth = date.toLocaleString('en-us', { month: 'long' }); /* June */
let shortMonth = date.toLocaleString('en-us', { month: 'short' }); /* Jun */
let narrowMonth = date.toLocaleString('en-us', { month: 'narrow' }); /* J */

Example 2: Javascript get month name

var  months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
var d = new Date();
var monthName=months[d.getMonth()]; // "July" (or current month)

Example 3: javascript add days to date

var myCurrentDate=new Date();
var myFutureDate=new Date(myCurrentDate);
    myFutureDate.setDate(myFutureDate.getDate()+ 8);//myFutureDate is now 8 days in the future

Example 4: moment js get date 1 month

var currentDate = moment('2015-10-30');
var futureMonth = moment(currentDate).add(1, 'M');
var futureMonthEnd = moment(futureMonth).endOf('month');

if(currentDate.date() != futureMonth.date() && futureMonth.isSame(futureMonthEnd.format('YYYY-MM-DD'))) {
    futureMonth = futureMonth.add(1, 'd');
}

console.log(currentDate);
console.log(futureMonth);