You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
893 B
31 lines
893 B
3 years ago
|
import toDate from '../toDate/index.js';
|
||
|
|
import requiredArgs from '../_lib/requiredArgs/index.js';
|
||
|
|
/**
|
||
|
|
* @name getDecade
|
||
|
|
* @category Decade Helpers
|
||
|
|
* @summary Get the decade of the given date.
|
||
|
|
*
|
||
|
|
* @description
|
||
|
|
* Get the decade of the given date.
|
||
|
|
*
|
||
|
|
* ### v2.0.0 breaking changes:
|
||
|
|
*
|
||
|
|
* - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
|
||
|
|
*
|
||
|
|
* @param {Date|Number} date - the given date
|
||
|
|
* @returns {Number} the year of decade
|
||
|
|
* @throws {TypeError} 1 argument required
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* // Which decade belongs 27 November 1942?
|
||
|
|
* var result = getDecade(new Date(1942, 10, 27))
|
||
|
|
* //=> 1940
|
||
|
|
*/
|
||
|
|
|
||
|
|
export default function getDecade(dirtyDate) {
|
||
|
|
requiredArgs(1, arguments);
|
||
|
|
var date = toDate(dirtyDate);
|
||
|
|
var year = date.getFullYear();
|
||
|
|
var decade = Math.floor(year / 10) * 10;
|
||
|
|
return decade;
|
||
|
|
}
|