# dayjs **Repository Path**: wu_jianyong/dayjs ## Basic Information - **Project Name**: dayjs - **Description**: ⏰ Day.js 2KB immutable date library alternative to Moment.js with the same modern API - **Primary Language**: JavaScript - **License**: MIT - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2021-04-07 - **Last Updated**: 2021-04-07 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README English | [简体中文](./docs/zh-cn/README.zh-CN.md) | [日本語](./docs/ja/README-ja.md) | [Português Brasileiro](./docs/pt-br/README-pt-br.md) | [한국어](./docs/ko/README-ko.md) | [Español (España)](./docs/es-es/README-es-es.md)

Day.js

Fast 2kB alternative to Moment.js with the same modern API


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> 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. ```js dayjs().startOf('month').add(1, 'day').set('year', 2018).format('YYYY-MM-DD HH:mm:ss'); ``` * 🕒 Familiar Moment.js API & patterns * 💪 Immutable * 🔥 Chainable * 🌐 I18n support * 📦 2kb mini library * 👫 All browsers supported --- ## Getting Started ### Installation ```console npm install dayjs --save ``` 📚[Installation Guide](./docs/en/Installation.md) ### API It's easy to use Day.js APIs to parse, validate, manipulate, and display dates and times. ```javascript 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 ``` 📚[API Reference](./docs/en/API-reference.md) ### I18n Day.js has great support for internationalization. But none of them will be included in your build unless you use it. ```javascript 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 ``` 📚[Internationalization](./docs/en/I18n.md) ### Plugin A plugin is an independent module that can be added to Day.js to extend functionality or add new features. ```javascript 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 ``` 📚[Plugin List](./docs/en/Plugin.md) ## Sponsors Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/dayjs#sponsor)] ## Contributors 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! 🙏 ## License Day.js is licensed under a [MIT License](./LICENSE).