date-fns/set_day_of_year/index.js

Modern JavaScript date utility library

var parse = require('../parse/index.js')

/**
 * @category Day Helpers
 * @summary Set the day of the year to the given date.
 *
 * @description
 * Set the day of the year to the given date.
 *
 * @param {Date|String|Number} date - the date to be changed
 * @param {Number} dayOfYear - the day of the year of the new date
 * @returns {Date} the new date with the day of the year setted
 *
 * @example
 * // Set the 2nd day of the year to 2 July 2014:
 * var result = setDayOfYear(new Date(2014, 6, 2), 2)
 * //=> Thu Jan 02 2014 00:00:00
 */
function setDayOfYear (dirtyDate, dayOfYear) {
  var date = parse(dirtyDate)
  date.setMonth(0)
  date.setDate(dayOfYear)
  return date
}

module.exports = setDayOfYear