How to Format a Date in JavaScript

How do I format a date in JavaScript?

For custom-delimited date formats, you have to pull out the date (or time)
components from a DateTimeFormat object (which is part of the
ECMAScript Internationalization API), and then manually create a string
with the delimiters you want.

To do this, you can use DateTimeFormat#formatToParts. You could
destructure the array, but that is not ideal, as the array output depends on the
locale:

{ // example 1
   let f = new Intl.DateTimeFormat('en');
   let a = f.formatToParts();
   console.log(a);
}
{ // example 2
   let f = new Intl.DateTimeFormat('hi');
   let a = f.formatToParts();
   console.log(a);
}

Format JavaScript date as yyyy-mm-dd

You can do:

function formatDate(date) {
    var d = new Date(date),
        month = '' + (d.getMonth() + 1),
        day = '' + d.getDate(),
        year = d.getFullYear();

    if (month.length < 2) 
        month = '0' + month;
    if (day.length < 2) 
        day = '0' + day;

    return [year, month, day].join('-');
}
 
console.log(formatDate('Sun May 11,2014'));

Format a date string in javascript

Use Moment.js and the .format function.

moment('2017-06-10T16:08:00').format('MM/DD/YYYY');

Will output

06/10/2017

Beside the format function Moment.js will enrich you will alot more useful functions.

How to change the format of a date in JavaScript?

Your date 2018-06-13T13:28:14+0000 is in UTC format.

One of the simplest options is to use momentjs to get desired date time format.

moment(yourDate).utc().format("DD/MM/YYYY hh:mm:ss a")

Below is code:

let date = moment("2018-06-13T13:28:14+0000").utc().format("DD/MM/YYYY hh:mm:ss a")
console.log(date)

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.js"></script>

How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?

If you're using Node.js, you're sure to have EcmaScript 5, and so Date has a toISOString method. You're asking for a slight modification of ISO8601:

new Date().toISOString()
> '2012-11-04T14:51:06.157Z'

So just cut a few things out, and you're set:

new Date().toISOString().
  replace(/T/, ' ').      // replace T with a space
  replace(/\..+/, '')     // delete the dot and everything after
> '2012-11-04 14:55:45'

Or, in one line: new Date().toISOString().replace(/T/, ' ').replace(/\..+/, '')

ISO8601 is necessarily UTC (also indicated by the trailing Z on the first result), so you get UTC by default (always a good thing).

How to change a date format in JavaScript

Convert it do a Date, get the make a string out of the components.

The month needs to add 1 since for some reason, months are zero-indexed (January == 0, February == 1, ..., December == 11)

const dateString = "13 Dec,2021 12:59:58";

const getNewString = (dateString) => {
  const date = new Date(dateString);
  return `${date.getDate()}-${date.getMonth()+1}-${date.getFullYear()}`;
}

console.log(getNewString(dateString));

Javascript format date / time

Yes, you can use the native javascript Date() object and its methods.

For instance you can create a function like:

function formatDate(date) {
  var hours = date.getHours();
  var minutes = date.getMinutes();
  var ampm = hours >= 12 ? 'pm' : 'am';
  hours = hours % 12;
  hours = hours ? hours : 12; // the hour '0' should be '12'
  minutes = minutes < 10 ? '0'+minutes : minutes;
  var strTime = hours + ':' + minutes + ' ' + ampm;
  return (date.getMonth()+1) + "/" + date.getDate() + "/" + date.getFullYear() + "  " + strTime;
}

var d = new Date();
var e = formatDate(d);

alert(e);

And display also the am / pm and the correct time.

Remember to use getFullYear() method and not getYear() because it has been deprecated.

DEMO http://jsfiddle.net/a_incarnati/kqo10jLb/4/

How to format an existing date from an Object in JS

You can write a simple utility function like below which will return you formatted date.

function getFormattedDate(date) {
    var month = date.getMonth() + 1;
    var day = date.getDate();
    var year = date.getFullYear();
    var time =  date.getHours() + ":" + date.getMinutes() + ":" + date.getSeconds();
    return day + "." + month + "." + year + ", " + time ;
}

console.log(getFormattedDate(new Date()))