javascript instance accessor property
Temporal.Duration.prototype.nanoseconds
The nanoseconds accessor property of Duration instances returns an integer representing the number of nanoseconds in the duration.
Unless the duration is balanced, you cannot assume the range of this value, but you can know its sign by checking the duration’s sign property. If it is balanced to a unit above nanoseconds, the nanoseconds absolute value will be between 0 and 999, inclusive.
The set accessor of nanoseconds is undefined. You cannot change this property directly. Use the with() method to create a new Temporal.Duration object with the desired new value.
Examples
Using nanoseconds
const d1 = Temporal.Duration.from({ microseconds: 1, nanoseconds: 500 });
const d2 = Temporal.Duration.from({ microseconds: -1, nanoseconds: -500 });
const d3 = Temporal.Duration.from({ microseconds: 1 });
const d4 = Temporal.Duration.from({ nanoseconds: 1000 });
console.log(d1.nanoseconds); // 500
console.log(d2.nanoseconds); // -500
console.log(d3.nanoseconds); // 0
console.log(d4.nanoseconds); // 1000
// Balance d4
const d4Balanced = d4.round({ largestUnit: "microseconds" });
console.log(d4Balanced.nanoseconds); // 0
console.log(d4Balanced.microseconds); // 1
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.
See also
DurationTemporal.Duration.prototype.yearsTemporal.Duration.prototype.monthsTemporal.Duration.prototype.weeksTemporal.Duration.prototype.daysTemporal.Duration.prototype.hoursTemporal.Duration.prototype.minutesTemporal.Duration.prototype.secondsTemporal.Duration.prototype.millisecondsTemporal.Duration.prototype.microseconds