date-fns

What is date-fns?

The date-fns npm package provides a comprehensive, yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js. It offers a variety of functions to parse, validate, manipulate, and format dates.

What are date-fns's main functionalities?

Parsing Dates

Parse strings in ISO format to JavaScript Date objects.

const parseISO = require('date-fns/parseISO');
const result = parseISO('2023-04-12');

Formatting Dates

Format Date objects into strings with a given format.

const format = require('date-fns/format');
const result = format(new Date(2023, 3, 12), 'yyyy-MM-dd');

Comparing Dates

Compare two dates to determine if one comes before the other.

const isBefore = require('date-fns/isBefore');
const result = isBefore(new Date(2023, 3, 12), new Date(2023, 3, 13));

Manipulating Dates

Perform date calculations such as adding or subtracting time spans.

const addDays = require('date-fns/addDays');
const result = addDays(new Date(2023, 3, 12), 10);

Validating Dates

Check if a date is valid.

const isValid = require('date-fns/isValid');
const result = isValid(new Date('2023-04-12'));

Other packages similar to date-fns

moment

Moment.js is a legacy project, now in maintenance mode, which provides similar functionalities for parsing, validating, manipulating, and formatting dates. It's more object-oriented and mutable compared to the functional and immutable design of date-fns.

dayjs

Day.js is a lightweight date library that offers a similar API to Moment.js but with a smaller footprint. It is immutable and chainable, like date-fns, but with a different plugin system for extending functionality.

luxon

Luxon is a powerful, modern, and chainable library for working with dates and times. It offers a rich set of features for parsing, formatting, manipulating, and querying dates. It's built on the Intl API and provides time zone support out of the box, which is more comprehensive than date-fns's approach to time zones.

README

date-fns

Pinned: see a brief comparison with Moment.js.

date-fns provides the most comprehensive, yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.

date-fns is like lodash for dates. It has 140+ functions for all occasions.

dateFns.format(new Date(2014, 1, 11), 'MM/DD/YYYY')
//=> '02/11/2014'

var dates = [new Date(1995, 6, 2), new Date(1987, 1, 11), new Date(1989, 6, 10)]
dates.sort(dateFns.compareAsc)
//=> [
//   Wed Feb 11 1987 00:00:00,
//   Mon Jul 10 1989 00:00:00,
//   Sun Jul 02 1995 00:00:00
// ]

The library is available as an npm package, a Bower package. To install a package run:

npm install date-fns --save
# or with yarn
yarn add date-fns
# or with bower
bower install date-fns

Also, you can simply download the library from the releases page.

Docs

See date-fns.org for more details, API, and other docs.

License

MIT © Sasha Koss

Changelog

[1.30.1] - 2018-12-10

Fixed

• Fixed DST issue. See #972 and #992 for more details. This fix was backported from v2.

• Fix a few bugs that appear in timezones with offsets that include seconds (e.g. GMT+00:57:44). See PR #789. This fix was backported from v2.

• Fixed misspelled January in the Thai locale. Thanks to @ratchapol-an!

Added

• Added Serbian locale. Kudos to @mawi12345!

• Added Belarusian locale. Kudos to @mawi12345 again!

Changed

• Improved ja translation of distanceInWords. Thanks to @kudohamu!