Package Exports

date-arithmetic

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (date-arithmetic) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Date Arthmetic

A simple object containing some date math utils in the spirit of Moment.js. Unlike Moment this module, returns real date objects, so it isn't chainable.

var dateMath = require('date-arithmetic')

var date = dateMath.month(new Date)

API

all api methods return a new date. Date objects are never mutated.

Localization

startOfWeek() method returns a number (usually 0-6) indicating the start of the week day. Override this function to specify a a culture specific start day. the default is 0.

Accessors

get and set date part values.

dateMath.milliseconds(date, [value])
dateMath.seconds(date, [value])
dateMath.minutes(date, [value])
dateMath.hours(date, [value])
dateMath.date(date, [value])
dateMath.day(date, [value])
dateMath.weekday(date, [value])
dateMath.month(date, [value])
dateMath.year(date, [value])
dateMath.decade(date, [value])
dateMath.century(date, [value])

`startOf(data, unit)`

return a new date with the relevent date parts zero'd out.

dateMath.startOf(new Date, 'day') // -> no time components

Valid unit values are; "second", "minutes", "hours", "day", "week", "month", "year", "decade", "century"

`endOf(data, unit)`

the opposite of startOf

dateMath.endOf(new Date, 'day') // -> one millisecond before tomorrow

Valid unit values are; "milliseconds", "second", "minutes", "hours", "day", "weekday", "month", "year", "decade", "century".

Math Functions

Arithmetic functions

dateMath.add(date, value, unit)
dateMath.subtract(date, value, unit)
dateMath.eq(dateA, dateB)
dateMath.neq(dateA, dateB)
dateMath.gte(dateA, dateB)
dateMath.gt(dateA, dateB)
dateMath.lte(dateA, dateB)
dateMath.lt(dateA, dateB)
dateMath.inRange(day, min, max, unit)
dateMath.min(dateA, dateB, dateN)
dateMath.max(dateA, dateB, dateN)

Valid unit values are; "second", "minutes", "hours", "day", "week", "month", "year", "decade", "century"