Temporal.PlainDate.prototype.daysInWeek

The daysInWeek accessor property of {{jsxref("Temporal.PlainDate")}} instances returns a positive integer representing the number of days in the week of this date. It is calendar-dependent.

For the ISO 8601 calendar, this is always 7, but in other calendar systems it may differ from week to week. All commonly supported calendars use 7-day weeks.

The set accessor of daysInWeek is undefined. You cannot change this property directly.

Examples#

Using daysInWeek#

const date = Temporal.PlainDate.from("2021-07-01");
console.log(date.daysInWeek); // 7

const date2 = Temporal.PlainDate.from("2021-07-01[u-ca=chinese]");
console.log(date2.daysInWeek); // 7

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Temporal.PlainDate")}}
• {{jsxref("Temporal/PlainDate/with", "Temporal.PlainDate.prototype.with()")}}
• {{jsxref("Temporal/PlainDate/add", "Temporal.PlainDate.prototype.add()")}}
• {{jsxref("Temporal/PlainDate/subtract", "Temporal.PlainDate.prototype.subtract()")}}
• {{jsxref("Temporal/PlainDate/yearOfWeek", "Temporal.PlainDate.prototype.yearOfWeek")}}
• {{jsxref("Temporal/PlainDate/weekOfYear", "Temporal.PlainDate.prototype.weekOfYear")}}
• {{jsxref("Temporal/PlainDate/dayOfWeek", "Temporal.PlainDate.prototype.dayOfWeek")}}
• {{jsxref("Temporal/PlainDate/daysInMonth", "Temporal.PlainDate.prototype.daysInMonth")}}
• {{jsxref("Temporal/PlainDate/daysInYear", "Temporal.PlainDate.prototype.daysInYear")}}