2KB immutable date time library alternative to Moment.js with the same modern API
The dayjs npm package 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 offers various functionalities to handle dates and times effectively.
Parsing
Parse a date string into a dayjs object.
dayjs('2023-04-01')Validation
Check if a date is valid.
dayjs('2023-04-01').isValid()Manipulation
Manipulate the date by adding time to it.
dayjs().add(1, 'year')Display
Display the date in a specified format.
dayjs().format('YYYY-MM-DD')Query
Query the date to compare with another date.
dayjs().isBefore(dayjs('2023-12-31'))Localization
Localize the date to a different language.
dayjs().locale('es').format('dddd, MMMM D YYYY')Timezone
Handle timezone conversions.
dayjs().tz('America/New_York').format()Moment.js is a legacy date-time library similar to dayjs with a wide range of functionalities but is larger in size and no longer recommended for new projects.
Date-fns is a modern date utility library that provides the most comprehensive, yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.
Luxon is a powerful, modern, and friendly wrapper for JavaScript dates and times. It offers a fluent API and aims to be a successor to Moment.js.
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Fast 2kB alternative to Moment.js with the same modern API
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. If you use Moment.js, you already know how to use Day.js.
dayjs().startOf('month').add(1, 'day').set('year', 2018).format('YYYY-MM-DD HH:mm:ss');
npm install dayjs --save
It's easy to use Day.js APIs to parse, validate, manipulate, and display dates and times.
dayjs('2018-08-08') // parse
dayjs().format('{YYYY} MM-DDTHH:mm:ss SSS [Z] A') // display
dayjs().set('month', 3).month() // get & set
dayjs().add(1, 'year') // manipulate
dayjs().isBefore(dayjs()) // query
Day.js has great support for internationalization.
But none of them will be included in your build unless you use it.
import 'dayjs/locale/es' // load on demand
dayjs.locale('es') // use Spanish locale globally
dayjs('2018-05-05').locale('zh-cn').format() // use Chinese Simplified locale in a specific instance
A plugin is an independent module that can be added to Day.js to extend functionality or add new features.
import advancedFormat from 'dayjs/plugin/advancedFormat' // load on demand
dayjs.extend(advancedFormat) // use plugin
dayjs().format('Q Do k kk X x') // more available formats
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This project exists thanks to all the people who contribute.
Please give us a 💖 star 💖 to support us. Thank you.
And thank you to all our backers! 🙏
Day.js is licensed under a MIT License.
1.8.18 (2019-12-18)
FAQs
2KB immutable date time library alternative to Moment.js with the same modern API
The npm package dayjs receives a total of 17,336,279 weekly downloads. As such, dayjs popularity was classified as popular.
We found that dayjs 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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