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

Syntax

equals(other)

Parameters

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

Return value

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

Examples

Using equals()

const dt1 = Temporal.PlainDateTime.from("2021-08-01");
const dt2 = Temporal.PlainDateTime.from({ year: 2021, month: 8, day: 1 });
console.log(dt1.equals(dt2)); // true

const dt3 = Temporal.PlainDateTime.from("2021-08-01[u-ca=japanese]");
console.log(dt1.equals(dt3)); // false

const dt4 = Temporal.PlainDateTime.from("2021-08-01T01:00:00");
console.log(dt1.equals(dt4)); // false

Specifications

Specification
Temporal proposal # sec-temporal.plaindatetime.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