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Temporal.Duration.prototype.negated()

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

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

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Using negated()

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

Browser compatibility

Desktop Mobile Server
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS Bun Deno Node.js
negated 144 144 139 No preview 144 139 No No No 144 No ? 1.40 No

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/Duration/negated