37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
var parse = require('../parse/index.js')
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var getDaysInMonth = require('../get_days_in_month/index.js')
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/**
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* @category Month Helpers
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* @summary Set the month to the given date.
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*
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* @description
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* Set the month to the given date.
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*
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* @param {Date|String|Number} date - the date to be changed
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* @param {Number} month - the month of the new date
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* @returns {Date} the new date with the month setted
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*
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* @example
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* // Set February to 1 September 2014:
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* var result = setMonth(new Date(2014, 8, 1), 1)
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* //=> Sat Feb 01 2014 00:00:00
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*/
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function setMonth (dirtyDate, dirtyMonth) {
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var date = parse(dirtyDate)
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var month = Number(dirtyMonth)
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var year = date.getFullYear()
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var day = date.getDate()
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var dateWithDesiredMonth = new Date(0)
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dateWithDesiredMonth.setFullYear(year, month, 15)
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dateWithDesiredMonth.setHours(0, 0, 0, 0)
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var daysInMonth = getDaysInMonth(dateWithDesiredMonth)
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// Set the last day of the new month
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// if the original date was the last day of the longer month
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date.setMonth(month, Math.min(day, daysInMonth))
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return date
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}
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module.exports = setMonth
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