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.
43 lines
1.3 KiB
43 lines
1.3 KiB
3 years ago
|
import toInteger from '../_lib/toInteger/index.js';
|
||
|
|
import toDate from '../toDate/index.js';
|
||
|
|
import requiredArgs from '../_lib/requiredArgs/index.js';
|
||
|
|
/**
|
||
|
|
* @name addDays
|
||
|
|
* @category Day Helpers
|
||
|
|
* @summary Add the specified number of days to the given date.
|
||
|
|
*
|
||
|
|
* @description
|
||
|
|
* Add the specified number of days to 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 date to be changed
|
||
|
|
* @param {Number} amount - the amount of days to be added. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
|
||
|
|
* @returns {Date} the new date with the days added
|
||
|
|
* @throws {TypeError} 2 arguments required
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* // Add 10 days to 1 September 2014:
|
||
|
|
* var result = addDays(new Date(2014, 8, 1), 10)
|
||
|
|
* //=> Thu Sep 11 2014 00:00:00
|
||
|
|
*/
|
||
|
|
|
||
|
|
export default function addDays(dirtyDate, dirtyAmount) {
|
||
|
|
requiredArgs(2, arguments);
|
||
|
|
var date = toDate(dirtyDate);
|
||
|
|
var amount = toInteger(dirtyAmount);
|
||
|
|
|
||
|
|
if (isNaN(amount)) {
|
||
|
|
return new Date(NaN);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!amount) {
|
||
|
|
// If 0 days, no-op to avoid changing times in the hour before end of DST
|
||
|
|
return date;
|
||
|
|
}
|
||
|
|
|
||
|
|
date.setDate(date.getDate() + amount);
|
||
|
|
return date;
|
||
|
|
}
|