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

js
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()

js
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 proposal
# sec-date.prototype.totemporalinstant

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
toTemporalInstant
Experimental

Legend

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

In development. Supported in a pre-release version.
In development. Supported in a pre-release version.
No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.
User must explicitly enable this feature.

See also