<!-- @license Apache-2.0 Copyright (c) 2018 The Stdlib Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # Time [![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] [![dependencies][dependencies-image]][dependencies-url] > Standard library time utilities. <section class="installation"> ## Installation ```bash npm install @stdlib/time ``` </section> <section class="usage"> ## Usage ```javascript var time = require( '@stdlib/time' ); ``` #### time Standard library time utilities. ```javascript var ns = time; // returns {...} ``` ### Calendar Utilities <!-- <toc keywords="+calendar"> --> <div class="namespace-toc"> - <span class="signature">[`dayOfQuarter( [month[, day, year]] )`][@stdlib/time/day-of-quarter]</span><span class="delimiter">: </span><span class="description">determine the day of the quarter.</span> - <span class="signature">[`dayOfYear( [month[, day, year]] )`][@stdlib/time/day-of-year]</span><span class="delimiter">: </span><span class="description">determine the day of the year.</span> - <span class="signature">[`daysInMonth( [month[, year]] )`][@stdlib/time/days-in-month]</span><span class="delimiter">: </span><span class="description">determine the number of days in a month.</span> - <span class="signature">[`daysInYear( [value] )`][@stdlib/time/days-in-year]</span><span class="delimiter">: </span><span class="description">determine the number of days in a year according to the Gregorian calendar.</span> - <span class="signature">[`hoursInMonth( [month[, year]] )`][@stdlib/time/hours-in-month]</span><span class="delimiter">: </span><span class="description">determine the number of hours in a month.</span> - <span class="signature">[`hoursInYear( [value] )`][@stdlib/time/hours-in-year]</span><span class="delimiter">: </span><span class="description">determine the number of hours in a year according to the Gregorian calendar.</span> - <span class="signature">[`isoWeeksInYear( [value] )`][@stdlib/time/iso-weeks-in-year]</span><span class="delimiter">: </span><span class="description">determine the number of ISO weeks in a year according to the Gregorian calendar.</span> - <span class="signature">[`minutesInMonth( [month[, year]] )`][@stdlib/time/minutes-in-month]</span><span class="delimiter">: </span><span class="description">determine the number of minutes in a month.</span> - <span class="signature">[`minutesInYear( [value] )`][@stdlib/time/minutes-in-year]</span><span class="delimiter">: </span><span class="description">determine the number of minutes in a year according to the Gregorian calendar.</span> - <span class="signature">[`quarterOfYear( [month] )`][@stdlib/time/quarter-of-year]</span><span class="delimiter">: </span><span class="description">determine the quarter of the year.</span> - <span class="signature">[`secondsInMonth( [month[, year]] )`][@stdlib/time/seconds-in-month]</span><span class="delimiter">: </span><span class="description">determine the number of seconds in a month.</span> - <span class="signature">[`secondsInYear( [value] )`][@stdlib/time/seconds-in-year]</span><span class="delimiter">: </span><span class="description">determine the number of seconds in a year according to the Gregorian calendar.</span> </div> <!-- </toc> --> ```javascript var num = time.daysInYear( 2000 ); // returns 366 num = time.hoursInMonth( 2, 2017 ); // returns 672 ``` ### Timer Utilities <!-- <toc keywords="+timer"> --> <div class="namespace-toc"> - <span class="signature">[`tic()`][@stdlib/time/tic]</span><span class="delimiter">: </span><span class="description">return a high-resolution time.</span> - <span class="signature">[`toc( time )`][@stdlib/time/toc]</span><span class="delimiter">: </span><span class="description">return a high-resolution time difference.</span> </div> <!-- </toc> --> ```javascript var time = require( '@stdlib/time' ); var start = time.tic(); setTimeout( onTimeout, 2000 ); function onTimeout() { var elapsed = time.toc( start ); console.log( 'Elapsed: %d seconds and %d nanoseconds', elapsed[0], elapsed[1] ); } ``` </section> <!-- /.usage --> <section class="examples"> ## Examples <!-- TODO: better examples --> <!-- eslint no-undef: "error" --> ```javascript var objectKeys = require( '@stdlib/utils/keys' ); var time = require( '@stdlib/time' ); console.log( objectKeys( time ) ); ``` </section> <!-- /.examples --> <section class="main-repo" > * * * ## Notice This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more. For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib]. #### Community [![Chat][chat-image]][chat-url] --- ## License See [LICENSE][stdlib-license]. ## Copyright Copyright © 2016-2021. The Stdlib [Authors][stdlib-authors]. </section> <!-- /.stdlib --> <!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> <section class="links"> [npm-image]: http://img.shields.io/npm/v/@stdlib/time.svg [npm-url]: https://npmjs.org/package/@stdlib/time [test-image]: https://github.com/stdlib-js/time/actions/workflows/test.yml/badge.svg [test-url]: https://github.com/stdlib-js/time/actions/workflows/test.yml [coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/time/main.svg [coverage-url]: https://codecov.io/github/stdlib-js/time?branch=main [dependencies-image]: https://img.shields.io/david/stdlib-js/time.svg [dependencies-url]: https://david-dm.org/stdlib-js/time/main [chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg [chat-url]: https://gitter.im/stdlib-js/stdlib/ [stdlib]: https://github.com/stdlib-js/stdlib [stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors [stdlib-license]: https://raw.githubusercontent.com/stdlib-js/time/main/LICENSE <!-- <toc-links> --> [@stdlib/time/tic]: https://www.npmjs.com/package/@stdlib/time/tree/main/tic [@stdlib/time/toc]: https://www.npmjs.com/package/@stdlib/time/tree/main/toc [@stdlib/time/day-of-quarter]: https://www.npmjs.com/package/@stdlib/time/tree/main/day-of-quarter [@stdlib/time/day-of-year]: https://www.npmjs.com/package/@stdlib/time/tree/main/day-of-year [@stdlib/time/days-in-month]: https://www.npmjs.com/package/@stdlib/time/tree/main/days-in-month [@stdlib/time/days-in-year]: https://www.npmjs.com/package/@stdlib/time/tree/main/days-in-year [@stdlib/time/hours-in-month]: https://www.npmjs.com/package/@stdlib/time/tree/main/hours-in-month [@stdlib/time/hours-in-year]: https://www.npmjs.com/package/@stdlib/time/tree/main/hours-in-year [@stdlib/time/iso-weeks-in-year]: https://www.npmjs.com/package/@stdlib/time/tree/main/iso-weeks-in-year [@stdlib/time/minutes-in-month]: https://www.npmjs.com/package/@stdlib/time/tree/main/minutes-in-month [@stdlib/time/minutes-in-year]: https://www.npmjs.com/package/@stdlib/time/tree/main/minutes-in-year [@stdlib/time/quarter-of-year]: https://www.npmjs.com/package/@stdlib/time/tree/main/quarter-of-year [@stdlib/time/seconds-in-month]: https://www.npmjs.com/package/@stdlib/time/tree/main/seconds-in-month [@stdlib/time/seconds-in-year]: https://www.npmjs.com/package/@stdlib/time/tree/main/seconds-in-year <!-- </toc-links> --> </section> <!-- /.links -->