The nanosecond accessor property of Temporal.PlainTime instances returns an integer from 0 to 999 representing the nanosecond (10^-9 second) component of this time.

The set accessor of nanosecond is undefined. You cannot change this property directly. Use the with() method to create a new Temporal.PlainTime object with the desired new value.

Examples

Using nanosecond

const time = Temporal.PlainTime.from("12:34:56");
console.log(time.nanosecond); // 0

const time2 = Temporal.PlainTime.from("12:34:56.123456789");
console.log(time2.nanosecond); // 789

Changing nanosecond

const time = Temporal.PlainTime.from("12:34:56");
const newTime = time.with({ nanosecond: 100 });
console.log(newTime.toString()); // 12:34:56.0000001

You can also use add() or subtract() to move a certain number of nanoseconds from the current time.

const time = Temporal.PlainTime.from("12:34:56");
const newTime = time.add({ nanoseconds: 100 });
console.log(newTime.toString()); // 12:34:56.0000001

Specifications

Browser compatibility

See also

• Temporal.PlainTime
• Temporal.PlainTime.prototype.with()
• Temporal.PlainTime.prototype.add()
• Temporal.PlainTime.prototype.subtract()
• Temporal.PlainTime.prototype.second
• Temporal.PlainTime.prototype.millisecond
• Temporal.PlainTime.prototype.microsecond