moment

What is moment?

The moment npm package is a JavaScript library for parsing, validating, manipulating, and formatting dates. It is widely used for handling dates and times in Node.js and browser applications.

What are moment's main functionalities?

Parsing

Parse a date string into a moment object.

moment('2023-04-05')

Validation

Check if a date is valid.

moment('2023-04-05').isValid()

Manipulation

Manipulate dates by adding time to the current date.

moment().add(7, 'days')

Formatting

Format a moment date object into a string in a specified format.

moment().format('YYYY-MM-DD')

Query

Query dates to compare them.

moment().isBefore('2023-12-25')

Other packages similar to moment

date-fns

Provides a collection of simple, pure functions for manipulating JavaScript dates. It is modular, allowing you to pick and choose which functions you need, and is generally considered to be a lighter-weight alternative to moment.

luxon

Created by one of the original Moment.js team members, Luxon is a modern library for working with dates and times. It offers a fluent API and aims to have a smaller footprint than moment.

dayjs

Day.js is a minimalist JavaScript library that parses, validates, manipulates, and displays dates and times for modern browsers with a largely Moment.js-compatible API. It is lightweight and its API is designed to be familiar to Moment.js users.

README

Moment.js

A lightweight javascript date library for parsing, manipulating, and formatting dates.

Check it out at momentjs.com.

Get it with npm

npm install moment

Read the documentation at momentjs.com/docs/.

Run the unit tests at momentjs.com/test/.

Thanks to...

The folks over at date.js.

Everyone who helped with php.js date.

Ryan McGeary for his work on the jQuery timeago plugin.

License

Moment.js is freely distributable under the terms of the MIT license.

Changelog

1.1.0

Added moment.fn.format localized masks. 'L LL LLL LLLL' issue 29

Fixed issue 31.

1.0.1

Added moment.version to get the current version.

Removed window !== undefined when checking if module exists to support browserify. issue 25

1.0.0

Added convenience methods for getting and setting date parts.

Added better support for moment.add().

Added better lang support in NodeJS.

Renamed library from underscore.date to Moment.js

0.6.1

Added Portuguese, Italian, and French language support

0.6.0

Added _date.lang() support. Added support for passing multiple formats to try to parse a date. _date("07-10-1986", ["MM-DD-YYYY", "YYYY-MM-DD"]); Made parse from string and single format 25% faster.

0.5.2

Buxfix for issue 8 and issue 9.

0.5.1

Buxfix for issue 5.

0.5.0

Dropped the redundant _date.date() in favor of _date(). Removed _date.now(), as it is a duplicate of _date() with no parameters. Removed _date.isLeapYear(yearNuumber). Use _date([yearNumber]).isLeapYear() instead. Exposed customization options through the _date.relativeTime, _date.weekdays, _date.weekdaysShort, _date.months, _date.monthsShort, and _date.ordinal variables instead of the _date.customize() function.

0.4.1

Added date input formats for input strings.

0.4.0

Added underscore.date to npm. Removed dependancies on underscore.

0.3.2

Added 'z' and 'zz' to _.date().format(). Cleaned up some redundant code to trim off some bytes.

0.3.1

Cleaned up the namespace. Moved all date manipulation and display functions to the _.date() object.

0.3.0

Switched to the Underscore methodology of not mucking with the native objects' prototypes. Made chaining possible.

0.2.1

Changed date names to be a more pseudo standardized 'dddd, MMMM Do YYYY, h:mm:ss a'. Added Date.prototype functions add, subtract, isdst, and isleapyear.

0.2.0

Changed function names to be more concise. Changed date format from php date format to custom format.

0.1.0

Initial release