@spa-tools/utilities
isLeapYear()
The isLeapYear() function checks if a date value equates to a date that falls in a leap year.
Usage
import { isLeapYear } from '@spa-tools/utilities';
const leapYear = new Date('2020-01-01');
console.log(isLeapYear(leapYear));
// --> true
console.log(isLeapYear('2021-12-31'));
// --> false
Arguments
| Name | Type | Required? | Description |
|---|---|---|---|
date | string | number | Date | yes | The date value to check as either date string, timestamp integer, or date object |
Returns
boolean - If value of date equates to a date that falls in a leap year then returns true else returns false.