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31 lines
955 B
31 lines
955 B
var parse = require('../parse/index.js') |
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var addDays = require('../add_days/index.js') |
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var getISODay = require('../get_iso_day/index.js') |
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/** |
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* @category Weekday Helpers |
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* @summary Set the day of the ISO week to the given date. |
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* |
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* @description |
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* Set the day of the ISO week to the given date. |
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* ISO week starts with Monday. |
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* 7 is the index of Sunday, 1 is the index of Monday etc. |
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* |
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* @param {Date|String|Number} date - the date to be changed |
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* @param {Number} day - the day of the ISO week of the new date |
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* @returns {Date} the new date with the day of the ISO week setted |
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* |
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* @example |
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* // Set Sunday to 1 September 2014: |
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* var result = setISODay(new Date(2014, 8, 1), 7) |
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* //=> Sun Sep 07 2014 00:00:00 |
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*/ |
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function setISODay (dirtyDate, dirtyDay) { |
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var date = parse(dirtyDate) |
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var day = Number(dirtyDay) |
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var currentDay = getISODay(date) |
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var diff = day - currentDay |
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return addDays(date, diff) |
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} |
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module.exports = setISODay
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