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

js
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()

js
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

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
equals
Experimental

Legend

Tip: you can click/tap on a cell for more information.

No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.
User must explicitly enable this feature.

See also