25 lines
715 B
JavaScript
25 lines
715 B
JavaScript
var addYears = require('../add_years/index.js')
|
|
|
|
/**
|
|
* @category Year Helpers
|
|
* @summary Subtract the specified number of years from the given date.
|
|
*
|
|
* @description
|
|
* Subtract the specified number of years from the given date.
|
|
*
|
|
* @param {Date|String|Number} date - the date to be changed
|
|
* @param {Number} amount - the amount of years to be subtracted
|
|
* @returns {Date} the new date with the years subtracted
|
|
*
|
|
* @example
|
|
* // Subtract 5 years from 1 September 2014:
|
|
* var result = subYears(new Date(2014, 8, 1), 5)
|
|
* //=> Tue Sep 01 2009 00:00:00
|
|
*/
|
|
function subYears (dirtyDate, dirtyAmount) {
|
|
var amount = Number(dirtyAmount)
|
|
return addYears(dirtyDate, -amount)
|
|
}
|
|
|
|
module.exports = subYears
|