hugoWebsite/node_modules/date-fns/esm/getDaysInMonth/index.js

30 lines
911 B
JavaScript

import toDate from "../toDate/index.js";
import requiredArgs from "../_lib/requiredArgs/index.js";
/**
* @name getDaysInMonth
* @category Month Helpers
* @summary Get the number of days in a month of the given date.
*
* @description
* Get the number of days in a month of the given date.
*
* @param {Date|Number} date - the given date
* @returns {Number} the number of days in a month
* @throws {TypeError} 1 argument required
*
* @example
* // How many days are in February 2000?
* const result = getDaysInMonth(new Date(2000, 1))
* //=> 29
*/
export default function getDaysInMonth(dirtyDate) {
requiredArgs(1, arguments);
var date = toDate(dirtyDate);
var year = date.getFullYear();
var monthIndex = date.getMonth();
var lastDayOfMonth = new Date(0);
lastDayOfMonth.setFullYear(year, monthIndex + 1, 0);
lastDayOfMonth.setHours(0, 0, 0, 0);
return lastDayOfMonth.getDate();
}