date-fns

Date helpers in function-per-file style.

Installation

npm install --save date-fns

Usage

var isLastDayOfMonth = require('date-fns/src/is_last_day_of_month')
var date = new Date(2014, 1, 28)
console.log(isLastDayOfMonth(date))
//=> true

API

Code is fully documented, checkout source for reference.

Common helpers

• format - format date.
• isFuture - is passed date future?
• isPast - is passed date past?
• isEqual - are passed dates equal?
• isBefore - is first date before second one?
• isAfter - is first date after second one?
• compareAsc - compares the two dates and returns -1, 0 or 1.
• compareDesc - compares the two dates reverse chronologicaly and returns -1, 0 or 1.
• max - returns latest date.
• min - returns earliest date.
• parse - parse ISO-8601-formatted date.

Range helpers

• isWithinRange - is passed date within range?

Milliseconds helpers

• getMilliseconds - returns seconds.
• setMilliseconds - sets seconds.
• addMilliseconds - add milliseconds to passed date.
• subMilliseconds - subtracts milliseconds from passed date.
• getTimeSinceMidnight - returns time since midnight in milliseconds.

Seconds helpers

• getSeconds - returns seconds.
• setSeconds - sets seconds.
• startOfSecond - returns start of a second for passed date.
• endOfSecond - returns end of a second for passed date.
• addSeconds - add seconds to passed date.
• subSeconds - subtracts seconds from passed date.
• isSameSecond - are passed dates have the same second?

Minutes helpers

• getMinutes - returns minutes.
• setMinutes - sets minutes.
• startOfMinute - returns start of a minute for passed date.
• endOfMinute - returns end of a minute for passed date.
• addMinutes - add minutes to passed date.
• subMinutes - subtracts minutes from passed date.
• isSameMinute - are passed dates have the same minute?

Hours helpers

• getHours - returns hours.
• setHours - sets hours.
• startOfHour - returns start of an hour for passed date.
• endOfHour - returns end of an hour for passed date.
• addHours - add hours to passed date.
• subHours - subtracts hours from passed date.
• isSameHour - are passed dates have the same hour?

Day helpers

• getDate - returns day of month.
• setDate - sets day of month.
• getDay - returns day of week.
• setDay - sets day of week.
• getDayOfYear - returns day of year.
• setDayOfYear - sets day of year.
• startOfDay - returns start of a day for passed date.
• endOfDay - returns end of a day for passed date.
• addDays - add specified number of days to passed date.
• subDays - subtract specified number of days from passed date.
• isSameDay - are passed dates has the same day?
• isWeekend - is passed date weekend?
• isToday - is passed date today?
• eachDay - returns array of dates within specified range.
• differenceInDays - returns number of days between dates.

Week helpers

• getISOWeek - returns ISO week index.
• setISOWeek - sets ISO week index.
• startOfWeek - returns start of a week for passed date.
• endOfWeek - returns end of a week for passed date.
• lastDayOfWeek - returns last day of week for passed date.
• addWeeks - add specified number of weeks to passed date.
• subWeeks - subtract specified number of weeks from passed date.
• isSameWeek - returns true if passed dates belongs to the same week.

Month helpers

• getMonth - returns month index.
• setMonth - sets month index.
• startOfMonth - returns start of a month for passed date.
• endOfMonth - returns end of a month for passed date.
• lastDayOfMonth - returns last day of month for passed date.
• addMonths - add specified number of months to passed date.
• subMonths - subtract specified number of months from passed date.
• isSameMonth - returns true if passed dates have same month (and year).
• isFirstDayOfMonth - return true if passed date is first day of month.
• isLastDayOfMonth - return true if passed date is last day of month.
• getDaysInMonth - returns number of days in month.

Quarter helpers

• getQuarter - returns year quarter.
• setQuarter - sets year quarter.
• startOfQuarter - returns start of year quarter for passed date.
• endOfQuarter - returns end of year quarter for passed date.
• lastDayOfQuarter - returns last day of year quarter for passed date.
• addQuarters - add specified number of year quarters to passed date.
• subQuarters - subtract specified number of year quarters from passed date.
• isSameQuarter - are passed dates have the same year quarter?

Year helpers

• getYear - returns full year.
• setYear - sets full year.
• getISOYear - returns ISO week-numbering year.
• setISOYear - sets ISO week-numbering year.
• startOfYear - returns start of year for passed date.
• startOfISOYear - returns start of ISO week-numbering year for passed date.
• endOfYear - returns end of year for passed date.
• lastDayOfYear - returns last day of year for passed date.
• addYears - add specified number of years to passed date.
• subYears - subtract specified number of years from passed date.
• isSameYear - are passed dates have the same year?
• isLeapYear - returns true is passed date is in the leap year.
• getISOWeeksInYear - returns number of weeks in ISO week-numbering year.

I18n

TODO