date-fns
Advanced tools
Package description
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.
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'));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.
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 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.
Changelog
[0.8.0] - 2014-10-09
addDays inside of subDays.addMonths
subMonths
setMonth
setYear
Readme
Date helpers in function-per-file style.
Code is fully documented, checkout source for reference.
isWeekend - is passed date is weekend?isToday - is passed date is today?startOfDay - returns start of a day for passed dateendOfDay - returns end of a day for passed datestartOfWeek - returns start of a week for passed dateendOfWeek - returns end of a week for passed datestartOfMonth - returns start of a month for passed dateendOfMonth - returns end of a month for passed dateeachDay - returns array of dates within specified rangeaddDays - add specified number of days to passed datesubDays - substract specified number of days from passed dateaddMonths - add specified number of months to passed datesubMonths - substract specified number of days from passed dateisSameWeek - returns true if passed dates belongs to the same weekisSameMonth - returns true if passed dates has same month (and year)isFirstDayOfMonth - return true if passed date is first day of monthisLastDayOfMonth - return true if passed date is last day of monthsetMonth - sets month indexsetYear - sets full yearFAQs
Modern JavaScript date utility library
We found that date-fns demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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