The Temporal.PlainTime.compare() static method returns a number (-1, 0, or 1) indicating whether the first time comes before, is the same as, or comes after the second time. It is equivalent to comparing the hour, minute, second, millisecond, microsecond, and nanosecond fields one by one.

Syntax

Temporal.PlainTime.compare(time1, time2)

Parameters

time1

A string, an object, or a Temporal.PlainTime instance representing the first time to compare. It is converted to a Temporal.PlainTime object using the same algorithm as Temporal.PlainTime.from().

time2

The second time to compare, converted to a Temporal.PlainTime object using the same algorithm as time1.

Return value

Returns -1 if time1 comes before time2, 0 if they are the same, and 1 if time1 comes after time2.

Examples

Using Temporal.PlainTime.compare()

const time1 = Temporal.PlainTime.from("12:34:56");
const time2 = Temporal.PlainTime.from("12:34:57");
console.log(Temporal.PlainTime.compare(time1, time2)); // -1

const time3 = Temporal.PlainTime.from("11:34:56");
console.log(Temporal.PlainTime.compare(time1, time3)); // 1

Sorting an array of times

The purpose of this compare() function is to act as a comparator to be passed to Array.prototype.sort() and related functions.

const times = ["12:34:56", "11:34:56", "12:34:57"];

times.sort(Temporal.PlainTime.compare);
console.log(times);
// [ "11:34:56", "12:34:56", "12:34:57" ]

Specifications

Browser compatibility

See also

• Temporal.PlainTime
• Temporal.PlainTime.prototype.equals()