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Temporal.Instant.prototype.equals()

Baseline Limited availability

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

The equals() method of Temporal.Instant instances returns true if this instant is equivalent in value to another instant (in a form convertible by Temporal.Instant.from()), and false otherwise. They are compared by their epochNanoseconds. It is equivalent to Temporal.Instant.compare(this, other) === 0.

Syntax

equals(other)

Parameters

other
A string or a Temporal.Instant instance representing the other instant to compare. It is converted to a Temporal.Instant object using the same algorithm as Temporal.Instant.from().

Return value

true if this instant is equal to other by nanoseconds, false otherwise.

Examples

Using equals()

const instant1 = Temporal.Instant.from("2021-08-01T12:34:56Z");
const instant2 = Temporal.Instant.fromEpochMilliseconds(1627821296000);
console.log(instant1.equals(instant2)); // true

Specifications

Specification
Temporal
# sec-temporal.instant.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 WebView on iOS Bun Deno Node.js
equals
144
144
139
128
preview
144
139
95
No
No
144
No
1.4.0
2.7
26.0.0

See also

  • Temporal.Instant
  • Temporal.Instant.compare()

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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/Instant/equals

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