29 lines
795 B
JavaScript
29 lines
795 B
JavaScript
var parse = require('../parse/index.js')
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/**
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* @category Quarter Helpers
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* @summary Return the start of a year quarter for the given date.
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*
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* @description
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* Return the start of a year quarter for the given date.
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* The result will be in the local timezone.
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*
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* @param {Date|String|Number} date - the original date
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* @returns {Date} the start of a quarter
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*
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* @example
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* // The start of a quarter for 2 September 2014 11:55:00:
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* var result = startOfQuarter(new Date(2014, 8, 2, 11, 55, 0))
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* //=> Tue Jul 01 2014 00:00:00
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*/
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function startOfQuarter (dirtyDate) {
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var date = parse(dirtyDate)
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var currentMonth = date.getMonth()
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var month = currentMonth - currentMonth % 3
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date.setMonth(month, 1)
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date.setHours(0, 0, 0, 0)
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return date
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}
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module.exports = startOfQuarter
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