Temporal.PlainDate.prototype.valueOf()
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The valueOf() method of implicitly converted to primitives when used in arithmetic or comparison operations.
Syntax
js
valueOf()
Parameters
None.
Return value
None.
Exceptions
TypeError-
Always thrown.
Description
Because both Temporal.PlainDate.compare() static method to compare them.
Examples
Arithmetic and comparison operations on Temporal.PlainDate
All arithmetic and comparison operations on Temporal.PlainDate instances should use the dedicated methods or convert them to primitives explicitly.
js
const date1 = Temporal.PlainDate.from("2022-01-01");
const date2 = Temporal.PlainDate.from("2022-07-01");
date1 > date2; / TypeError: can't convert PlainDate to primitive type
Temporal.PlainDate.compare(date1, date2); / -1
date2 - date1; / TypeError: can't convert PlainDate to primitive type
date2.since(date1).toString(); / "P181D"
Specifications
| Specification |
|---|
| Temporal # sec-temporal.plaindate.prototype.valueof |