Temporal.PlainDate.prototype.equals()

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 equals() method of Temporal.PlainDate instances returns true if this date is equivalent in value to another date (in a form convertible by Temporal.PlainDate.from()), and false otherwise. They are compared both by their date values and their calendars, so two dates from different calendars may be considered equal by Temporal.PlainDate.compare() but not by equals().

Syntax

equals(other)

Parameters

other: A string, an object, or a Temporal.PlainDate instance representing the other date to compare. It is converted to a Temporal.PlainDate object using the same algorithm as Temporal.PlainDate.from().

Return value

true if this date is equal to other both in their date value and their calendar, false otherwise.

Examples

Using equals()

const date1 = Temporal.PlainDate.from("2021-08-01");
const date2 = Temporal.PlainDate.from({ year: 2021, month: 8, day: 1 });
console.log(date1.equals(date2)); // true

const date3 = Temporal.PlainDate.from("2021-08-01[u-ca=japanese]");
console.log(date1.equals(date3)); // false

const date4 = Temporal.PlainDate.from("2021-08-02");
console.log(date1.equals(date4)); // false

Specifications

Specification
Temporal proposal # sec-temporal.plaindate.prototype.equals

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
`equals`	No	No	No	No	No	No	No	No	No	No	No	1.40	No