Class DateTime

constructor

• new DateTime(epoch?, prec?): DateTime

• Parameters

  • epoch: MaybeDate = ...
  • prec: Precision = "t"

  Returns DateTime

M

d

h

m

s

t

y

q

• get q(): number

• Readonly property, returning 1-based quarter

  Returns number

  Remarks

  • 1 = Jan - Mar
  • 2 = Apr - Jun
  • 3 = Jul - Sep
  • 4 = Oct - Dec

w

• get w(): number

• Alias readonly property, same as DateTime.weekInYear.

  Returns number

add

• add(x, prec): DateTime

• Returns a new DateTime instance relative to this date, but with given period added/subtracted.

  Parameters

  • x: number
  • prec: Period

  Returns DateTime

compare

• compare(d): number

• Parameters

  • d: MaybeDate

  Returns number

copy

• copy(): DateTime

• Returns DateTime

dayInYear

• dayInYear(): number

• Returns number

daysInMonth

• daysInMonth(): number

• Returns number

decDay

• decDay(): number

• Returns number

decHour

• decHour(): number

• Returns number

decMillisecond

• decMillisecond(): number

• Returns number

decMinute

• decMinute(): number

• Returns number

decMonth

• decMonth(): number

• Returns number

decQuarter

• decQuarter(): number

• Returns number

decSecond

• decSecond(): number

• Returns number

decWeek

• decWeek(): number

• Returns number

decYear

• decYear(): number

• Returns number

eqDelta

• eqDelta(d, eps?): boolean

• Parameters

  • d: MaybeDate
  • eps: number = 0

  Returns boolean

equiv

• equiv(o): boolean

• Parameters

  • o: any

  Returns boolean

getTime

• getTime(): number

• Returns number

incDay

• incDay(): number

• Returns number

incHour

• incHour(): number

• Returns number

incMillisecond

• incMillisecond(): number

• Returns number

incMinute

• incMinute(): number

• Returns number

incMonth

• incMonth(): number

• Returns number

incQuarter

• incQuarter(): number

• Returns number

incSecond

• incSecond(): number

• Returns number

incWeek

• incWeek(): number

• Returns number

incYear

• incYear(): number

• Returns number

isAfter

• isAfter(d): boolean

• Returns true if this instance is before the given date, i.e. if this.compare(d) > 0.

  Parameters

  • d: MaybeDate

  Returns boolean

isBefore

• isBefore(d): boolean

• Returns true if this instance is before the given date, i.e. if this.compare(d) < 0.

  Parameters

  • d: MaybeDate

  Returns boolean

isLeapYear

• isLeapYear(): boolean

• Leap years are multiple of 4, excludingcentennial years that aren’t multiples of 400.

  Returns boolean

set

• set(d): DateTime

• Parameters

  • d: MaybeDate

  Returns DateTime

setPrecision

• setPrecision(prec): DateTime

• Parameters

  • prec: Precision

  Returns DateTime

toDate

• toDate(): Date

• Returns Date

toISOString

• toISOString(): string

• Returns string

toJSON

• toJSON(): string

• Returns string

toLocaleString

• toLocaleString(): string

• Returns formatted version using current LOCALE.dateTime formatter.

  Returns string

  Remarks

  The host environment's locale is NOT used. Only the currently active LOCALE is relevant.

toString

• toString(): string

• Returns string

valueOf

• valueOf(): number

• Returns number

weekInYear

• weekInYear(): number

• Returns week number according to ISO8601.

  Returns number

  Remarks

  Reference: https://en.wikipedia.org/wiki/Week#The_ISO_week_date_system

withPrecision

• withPrecision(prec): DateTime

• Parameters

  • prec: Precision

  Returns DateTime