Temporal.PlainDate.prototype.equals()

The equals() method of {{jsxref("Temporal.PlainDate")}} instances returns true if this date is equivalent in value to another date (in a form convertible by {{jsxref("Temporal/PlainDate/from", "Temporal.PlainDate.from()")}}), and false otherwise. They are compared both by their date values and their calendars, so two dates from different calendars may be considered equal by {{jsxref("Temporal/PlainDate/compare", "Temporal.PlainDate.compare()")}} but not by equals().

Syntax#

equals(other)

Parameters#

• other
• : A string, an object, or a {{jsxref("Temporal.PlainDate")}} instance representing the other date to compare. It is converted to a Temporal.PlainDate object using the same algorithm as {{jsxref("Temporal/PlainDate/from", "Temporal.PlainDate.from()")}}.

Return value#

true if this date is equal to other both in their date value and their calendar, false otherwise.

Examples#

Using equals()#

const date1 = Temporal.PlainDate.from("2021-08-01");
const date2 = Temporal.PlainDate.from({ year: 2021, month: 8, day: 1 });
console.log(date1.equals(date2)); // true

const date3 = Temporal.PlainDate.from("2021-08-01[u-ca=japanese]");
console.log(date1.equals(date3)); // false

const date4 = Temporal.PlainDate.from("2021-08-02");
console.log(date1.equals(date4)); // false

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Temporal.PlainDate")}}
• {{jsxref("Temporal/PlainDate/compare", "Temporal.PlainDate.compare()")}}