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29 lines
904 B
29 lines
904 B
var differenceInMilliseconds = require('../difference_in_milliseconds/index.js') |
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var MILLISECONDS_IN_HOUR = 3600000 |
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/** |
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* @category Hour Helpers |
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* @summary Get the number of hours between the given dates. |
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* |
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* @description |
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* Get the number of hours 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 hours |
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* |
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* @example |
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* // How many hours are between 2 July 2014 06:50:00 and 2 July 2014 19:00:00? |
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* var result = differenceInHours( |
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* new Date(2014, 6, 2, 19, 0), |
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* new Date(2014, 6, 2, 6, 50) |
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* ) |
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* //=> 12 |
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*/ |
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function differenceInHours (dirtyDateLeft, dirtyDateRight) { |
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var diff = differenceInMilliseconds(dirtyDateLeft, dirtyDateRight) / MILLISECONDS_IN_HOUR |
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return diff > 0 ? Math.floor(diff) : Math.ceil(diff) |
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} |
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module.exports = differenceInHours
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