Temporal.PlainYearMonth.prototype.era

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 era accessor property of Temporal.PlainYearMonth instances returns a calendar-specific lowercase string representing the era of this year-month, or undefined if the calendar does not use eras (e.g. ISO 8601). era and eraYear together uniquely identify a year in a calendar, in the same way that year does. It is calendar-dependent.

The set accessor of era is undefined. You cannot change this property directly. Use the with() method to create a new Temporal.PlainYearMonth object with the desired new value.

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

Examples

Using era

const ym = Temporal.PlainYearMonth.from("2021-07"); // ISO 8601 calendar
console.log(ym.era); // undefined

const ym2 = Temporal.PlainYearMonth.from("2021-07-01[u-ca=gregory]");
console.log(ym2.era); // gregory

Specifications

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

Browser compatibility

	Desktop					Mobile						Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	Deno	Node.js
`era`	No	No	No	No	No	No	No	No	No	No	No	1.40	No

Examples

Using era

Specifications

Browser compatibility

See also