Temporal.PlainYearMonth.prototype.monthsInYear

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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

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

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

Examples

Using monthsInYear

js
const ym = Temporal.PlainYearMonth.from("2021-07");
console.log(ym.monthsInYear); // 12

Specifications

Specification
Temporal proposal
# sec-get-temporal.plainyearmonth.prototype.monthsinyear

Browser compatibility

BCD tables only load in the browser

See also