[](https://gitter.im/moment/moment?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![NPM version][npm-version-image]][npm-url] [![NPM downloads][npm-downloads-image]][npm-url] [![MIT License][license-image]][license-url] [![Build Status][travis-image]][travis-url] [](https://coveralls.io/r/moment/moment?branch=develop) A lightweight JavaScript date library for parsing, validating, manipulating, and formatting dates. 一个轻量级的JavaScript date库，用于解析、验证、操作和格式化日期。 **[Documentation](http://momentjs.com/docs/)** ## Port to ECMAScript 6 (version 2.10.0) Moment 2.10.0 does not bring any new features, but the code is now written in ECMAScript 6 modules and placed inside `src/`. Previously `moment.js`, `locale/*.js` and `test/moment/*.js`, `test/locale/*.js` contained the source of the project. Now the source is in `src/`, temporary build (ECMAScript 5) files are placed under `build/umd/` (for running tests during development), and the `moment.js` and `locale/*.js` files are updated only on release. If you want to use a particular revision of the code, make sure to run `grunt transpile update-index`, so `moment.js` and `locales/*.js` are synced with `src/*`. We might place that in a commit hook in the future. ## Upgrading to 2.0.0 There are a number of small backwards incompatible changes with version 2.0.0. [See the full descriptions here](https://gist.github.com/timrwood/e72f2eef320ed9e37c51#backwards-incompatible-changes) * Changed language ordinal method to return the number + ordinal instead of just the ordinal. * Changed two digit year parsing cutoff to match strptime. * Removed `moment#sod` and `moment#eod` in favor of `moment#startOf` and `moment#endOf`. * Removed `moment.humanizeDuration()` in favor of `moment.duration().humanize()`. * Removed the lang data objects from the top level namespace. * Duplicate `Date` passed to `moment()` instead of referencing it. ## [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md) ## [Contributing](https://github.com/moment/moment/blob/develop/CONTRIBUTING.md) We're looking for co-maintainers! If you want to become a master of time please write to [ichernev](https://github.com/ichernev). ## License Moment.js is freely distributable under the terms of the [MIT license](https://github.com/moment/moment/blob/develop/LICENSE). [license-image]: http://img.shields.io/badge/license-MIT-blue.svg?style=flat [license-url]: LICENSE [npm-url]: https://npmjs.org/package/moment [npm-version-image]: http://img.shields.io/npm/v/moment.svg?style=flat [npm-downloads-image]: http://img.shields.io/npm/dm/moment.svg?style=flat [travis-url]: http://travis-ci.org/moment/moment [travis-image]: http://img.shields.io/travis/moment/moment/develop.svg?style=flat