Date.prototype.toTemporalInstant()

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 toTemporalInstant() method of Date instances returns a new Temporal.Instant object with the same epochMilliseconds value as this date's timestamp.

Use this method to convert legacy Date values to the Temporal API, then further convert it to other Temporal classes as necessary.

Syntax

toTemporalInstant()

Parameters

None.

Return value

A new Temporal.Instant object with the same epochMilliseconds value as this date's timestamp. Its microsecond and nanosecond components are always 0.

Exceptions

RangeError: Thrown if the date is invalid (it has a timestamp of NaN).

Examples

Using toTemporalInstant()

const legacyDate = new Date("2021-07-01T12:34:56.789Z");
const instant = legacyDate.toTemporalInstant();

// Further convert it to other objects
const zdt = instant.toZonedDateTimeISO("UTC");
const date = zdt.toPlainDate();
console.log(date.toString()); // 2021-07-01

Specifications

Specification
Temporal # sec-date.prototype.totemporalinstant

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
`toTemporalInstant`	No	No	139	No	preview	No	139	No	No	No	No	1.40	No