Documentation / jalali-js / startOf
Function: startOf()
startOf(
date,unit,system,weekStartDay?):CalendarDateFields
Defined in: date-math.ts:118
The first day of the week, month, or year containing date, in system. A week's start day varies by culture, so weekStartDay is a parameter (a dayOfWeek() index); it defaults to WEEK_START_DAY[system] and is ignored for the other units.
Parameters
date
unit
system
weekStartDay?
number = ...