javascript instance accessor property
Temporal.PlainDateTime.prototype.inLeapYear
The inLeapYear accessor property of PlainDateTime instances returns a boolean indicating whether this date is in a leap year. A leap year is a year that has more days (due to a leap day or leap month) than a common year. It is calendar-dependent.
The set accessor of inLeapYear is undefined. You cannot change this property directly.
For general information and more examples, see Temporal.PlainDate.prototype.inLeapYear.
Examples
Using inLeapYear
const dt = Temporal.PlainDateTime.from("2021-07-01");
console.log(dt.inLeapYear); // false
console.log(dt.daysInYear); // 365
console.log(dt.monthsInYear); // 12
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.
See also
PlainDateTimeTemporal.PlainDateTime.prototype.with()Temporal.PlainDateTime.prototype.add()Temporal.PlainDateTime.prototype.subtract()Temporal.PlainDateTime.prototype.yearTemporal.PlainDateTime.prototype.daysInYearTemporal.PlainDateTime.prototype.monthsInYearTemporal.PlainDate.prototype.inLeapYear