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24 lines
761 B
24 lines
761 B
var addQuarters = require('../add_quarters/index.js')
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/**
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* @category Quarter Helpers
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* @summary Subtract the specified number of year quarters from the given date.
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*
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* @description
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* Subtract the specified number of year quarters from the given date.
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*
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* @param {Date|String|Number} date - the date to be changed
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* @param {Number} amount - the amount of quarters to be subtracted
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* @returns {Date} the new date with the quarters subtracted
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*
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* @example
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* // Subtract 3 quarters from 1 September 2014:
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* var result = subQuarters(new Date(2014, 8, 1), 3)
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* //=> Sun Dec 01 2013 00:00:00
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*/
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function subQuarters (dirtyDate, dirtyAmount) {
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var amount = Number(dirtyAmount)
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return addQuarters(dirtyDate, -amount)
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}
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module.exports = subQuarters
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