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27 lines
849 B
27 lines
849 B
var differenceInMonths = require('../difference_in_months/index.js') |
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/** |
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* @category Quarter Helpers |
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* @summary Get the number of full quarters between the given dates. |
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* |
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* @description |
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* Get the number of full quarters between the given dates. |
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* |
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* @param {Date|String|Number} dateLeft - the later date |
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* @param {Date|String|Number} dateRight - the earlier date |
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* @returns {Number} the number of full quarters |
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* |
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* @example |
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* // How many full quarters are between 31 December 2013 and 2 July 2014? |
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* var result = differenceInQuarters( |
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* new Date(2014, 6, 2), |
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* new Date(2013, 11, 31) |
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* ) |
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* //=> 2 |
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*/ |
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function differenceInQuarters (dirtyDateLeft, dirtyDateRight) { |
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var diff = differenceInMonths(dirtyDateLeft, dirtyDateRight) / 3 |
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return diff > 0 ? Math.floor(diff) : Math.ceil(diff) |
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} |
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module.exports = differenceInQuarters
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