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Moment.js

A JavaScript library for parsing, validating, manipulating and formatting dates; now in maintenance mode.moment/moment

GitHub Download 2.31.0
Stars
47.9k
Forks
7k
Licence
MIT
Language
JavaScript
Last update
29 days ago
Type
Library

What it is

Moment.js is a JavaScript library that helps programs work with dates and times: reading date strings, checking whether they are valid, changing them (adding days, shifting time zones, and so on), and displaying them in readable formats. It is installed into a JavaScript project with npm, yarn, or bun. The README now marks it as a legacy project in maintenance mode, so it is not accepting new features.

  • Parse a date string written in a known format and check whether it is valid
  • Add or subtract days, weeks, or months from a date
  • Format a date into a human-readable string for display on a web page

Great for

  • Maintaining existing JavaScript projects that already depend on Moment.js
  • Developers who need a familiar date API and are not starting a new project
  • Teams whose code already uses Moment and need bug-level upkeep

Not ideal for

  • New projects: the README says new features are not being accepted, so newer date libraries may be a better long-term choice
  • Users who need a tool with no programming involved, since this is a code library
Step-by-step guide: how to use Moment.jsInstall, first run, examples, tips and FAQs
Day.js vs Moment.jsLuxon vs Moment.js

How to get it

  1. 1

    Install with a package manager

    You'll need: Node.js (version not specified in the README)

    Install Moment.js with npm

    npm install moment
  2. 2

    Run it

    • Run npm install moment in your project folder.
    • Import or require moment in your JavaScript file.
    • Call moment() to get the current date, or pass it a date string to parse.
    • Use methods such as format() to display the result.
  3. 3

    Get the most out of it

    • Read the official documentation at momentjs.com/docs for the full API
    • Check the project's CHANGELOG.md for version-specific changes
    • Review SECURITY.md and THREAT_MODEL.md before using it with untrusted input

Downloads

Source code (.zip)develop branch · straight from GitHubRelease 2.31.0Release notes and sourceOfficial website & docsmomentjs.com

Strengths

  • Widely used, with a large community and many years of existing code and examples
  • MIT licensed and distributed through npm
  • Maintained under the OpenJS Foundation, which provides governance and a security policy

Trade-offs

  • Maintenance mode: no new features are being accepted, so the library will not gain modern capabilities
  • The README does not detail its size or performance trade-offs, so check those for your use case

How it compares

ProjectStarsTypeLevelUpdatedBest for
moment (this)47.9kLibrarybeginner29 days agoMaintaining existing JavaScript projects that already depend on Moment.js
dayjs48.7kLibrarybeginner2 months agoJavaScript developers who used Moment.js and want a smaller library
luxon16.5kLibrarybeginner3 months agoJavaScript developers who need to work with dates and time zones in an app

Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.