27 lines
755 B
JavaScript
27 lines
755 B
JavaScript
var parse = require('../parse/index.js')
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var startOfYear = require('../start_of_year/index.js')
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var differenceInCalendarDays = require('../difference_in_calendar_days/index.js')
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/**
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* @category Day Helpers
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* @summary Get the day of the year of the given date.
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*
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* @description
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* Get the day of the year of the given date.
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*
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* @param {Date|String|Number} date - the given date
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* @returns {Number} the day of year
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*
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* @example
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* // Which day of the year is 2 July 2014?
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* var result = getDayOfYear(new Date(2014, 6, 2))
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* //=> 183
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*/
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function getDayOfYear (dirtyDate) {
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var date = parse(dirtyDate)
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var diff = differenceInCalendarDays(date, startOfYear(date))
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var dayOfYear = diff + 1
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return dayOfYear
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}
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module.exports = getDayOfYear
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