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28 lines
795 B
28 lines
795 B
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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