The daysInYear accessor property of Temporal.PlainYearMonth instances returns a positive integer representing the number of days in the year of this date. It is calendar-dependent.

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

For general information and more examples, see Temporal.PlainDate.prototype.daysInYear.

Examples

Using daysInYear

const ym = Temporal.PlainYearMonth.from("2021-07");
console.log(ym.daysInYear); // 365

Specifications

Browser compatibility

See also

• Temporal.PlainYearMonth
• Temporal.PlainYearMonth.prototype.with()
• Temporal.PlainYearMonth.prototype.add()
• Temporal.PlainYearMonth.prototype.subtract()
• Temporal.PlainYearMonth.prototype.year
• Temporal.PlainYearMonth.prototype.daysInMonth
• Temporal.PlainDate.prototype.daysInYear