Datelish NPM | npm.io

Datelish

Originally written to help work with calendar data, this class helps parse, format, and transform dates. It supports both Node and browser use.

Usage

Node

npm install datelish

var Datelish = require("datelish");

Minified version:

var Datelish = require("datelish/dist/Datelish.min");

Visit package on npm

Browser

import Datelish from "datelish";

Minified version:

import Datelish from "datelish/dist/Datelish.min";

Script tag:

<script src="node_modules/datelish/dist/Datelish.min.js"></script>

Notes

This project is lightweight and dependency free.
The source code is written in ES6 and transpiled with Babel.
If you need to create documentation for local use, run npm run doc. Otherwise, visit the online docs.

Samples

Static Methods

Datelish.toLittleEndian(date, divider = "/", prepend0 = true);

Datelish.toLittleEndian(new Date(2016, 1, 1));
// 01/02/2016

Datelish.toLittleEndian(Datelish.today(), "-", false);
// 10-1-2016

Datelish.fromLittleEndian(dateStr);

Datelish.fromLittleEndian("1/2/2016");
// Mon Feb 01 2016 00:00:00 GMT-0500 (EST)

Datelish.toMiddleEndian(date, divider = "/", prepend0 = true);

Datelish.toMiddleEndian(new Date(2016, 1, 1));
// 02/01/2016

Datelish.toMiddleEndian(new Date(2016, 1, 1), ".");
// 02.01.2016

Datelish.fromMiddleEndian(dateStr);

Datelish.fromMiddleEndian("2/1/2016");
// Mon Feb 01 2016 00:00:00 GMT-0500 (EST)

Datelish.toBigEndian(date, divider = "/", prepend0 = true);

Datelish.toBigEndian(new Date(2016, 1, 1));
// 2016/02/01

Datelish.toBigEndian(new Date(2016, 1, 1), "", false);
// 20160201

Datelish.fromBigEndian(dateStr);

Datelish.fromBigEndian("2016/2/1");
// Mon Feb 01 2016 00:00:00 GMT-0500 (EST)

Datelish.fromBigEndian("2016.02.01");
// Mon Feb 01 2016 00:00:00 GMT-0500 (EST)

Datelish.toISO8601(date);

Datelish.toISO8601(new Date(2016, 1, 1));
// 2016-02-01T00:00:00-05:00

Datelish.daysTotal(month, year);

Datelish.daysTotal("february", 2015);
// 28

Datelish.daysTotal("feb", 2016);
// 29

Datelish.daysTotal(1, 2016);
// 29

Datelish.daysPerMonth(month, year);

Datelish.daysPerMonth("feb", 2016);
// 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29

Datelish.dayCount(startDate, endDate);

Datelish.dayCount(new Date(2016, 1, 1), new Date(2016, 1, 10));
// 9

Datelish.monthAsNames(short = false);

Datelish.monthAsNames();
// January, February, March, April, May, June, July, August, September, October, November, December

Datelish.monthAsNames(true);
// Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec

Datelish.monthNameToIndex(month);

Datelish.monthNameToIndex("feb");
// 1

Datelish.monthNameToIndex("february");
// 1

Datelish.monthIndexToName(index, short = false);

Datelish.monthIndexToName(1);
// February

Datelish.monthIndexToName(1, true);
// Feb

Datelish.monthsFrom(startDate, endDate, includeStartDate = false);

Datelish.monthsFrom(new Date(2016, 1, 1), new Date(2016, 3, 1));
// Tue Mar 01 2016 00:00:00 GMT-0500 (EST), Fri Apr 01 2016 00:00:00 GMT-0400 (EDT)

Datelish.monthsFrom(new Date(2016, 1, 1), new Date(2016, 3, 1), true);
// Mon Feb 01 2016 00:00:00 GMT-0500 (EST), Tue Mar 01 2016 00:00:00 GMT-0500 (EST), Fri Apr 01 2016 00:00:00 GMT-0400 (EDT)

Datelish.dateIsBetween(date, startDate, endDate, includeEndDate = false);

Datelish.dateIsBetween(new Date(2016, 1, 1), new Date(2000, 10, 1), new Date(2020, 1, 1));
// true

Datelish.dateIsAfter(date, isAfterDate);

Datelish.dateIsAfter(new Date(2016, 1, 1), new Date(2016, 0, 1));
// true

Datelish.dateIsBefore(date, isBeforeDate);

Datelish.dateIsBefore(new Date(2016, 1, 1), new Date(2016, 0, 1));
// false

Datelish.todayIs(date);

Datelish.todayIs(new Date(2016, 1, 1));
// false

Datelish.years(from, to);

Datelish.years(2016, 2020);
// 2016, 2017, 2018, 2019, 2020

Datelish.years(2016, "4");
// 2016, 2017, 2018, 2019, 2020

Datelish.currYear();

Datelish.currYear();
// 2017

Datelish.prepend0(val);

Datelish.prepend0(1);
// 01

Datelish.prepend0("1");
// 01

Datelish.toMinutes(sec, prepend0 = true);

Datelish.toMinutes(90);
// 01:30

Datelish.toMinutes(90, false);
// 1:30

Datelish.daysFromDate(date, n);

Datelish.daysFromDate(new Date(2016, 1, 1), 5);
// Sat Feb 06 2016 00:00:00 GMT-0500 (EST)

Datelish.daysFromDate(Datelish.today(), -1);
// Mon Jan 09 2017 00:00:00 GMT-0500 (EST)

Datelish.now();

Datelish.now();
// Tue Jan 10 2017 12:02:58 GMT-0500 (EST)

Datelish.today();

Datelish.today();
// Tue Jan 10 2017 00:00:00 GMT-0500 (EST)

Datelish.tomorrow();

Datelish.tomorrow();
// Wed Jan 11 2017 00:00:00 GMT-0500 (EST)

Datelish.yesterday();

Datelish.yesterday();
// Mon Jan 09 2017 00:00:00 GMT-0500 (EST)

Datelish.prevMonth(date = null);

Datelish.prevMonth();
// Thu Dec 01 2016 00:00:00 GMT-0500 (EST)

Datelish.prevMonth(new Date(2017, 11, 1));
// Wed Nov 01 2017 00:00:00 GMT-0400 (EDT)

Datelish.nextMonth(date = null);

Datelish.nextMonth();
// Wed Feb 01 2017 00:00:00 GMT-0500 (EST)

Datelish.nextMonth(new Date(2017, 11, 1));
// Mon Jan 01 2018 00:00:00 GMT-0500 (EST)

See the full documentation here.