Temporal.Duration.prototype.negated()

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 negated() method of Temporal.Duration instances returns a new Temporal.Duration object with the negated value of this duration (all fields keep the same magnitude, but sign becomes reversed).

Syntax

js
negated()

Parameters

None.

Return value

A new Temporal.Duration object, where all fields have the same magnitude as this duration, but the sign is reversed (positive fields become negative, and vice versa).

Examples

Using negated()

js
const d1 = Temporal.Duration.from({ hours: 1, minutes: 30 });
const d2 = Temporal.Duration.from({ hours: -1, minutes: -30 });

console.log(d1.negated().toString()); // "-PT1H30M"
console.log(d2.negated().toString()); // "PT1H30M"

Specifications

Specification
Temporal proposal
# sec-temporal.duration.prototype.negated

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
negated
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