Method Date.setISOWeek

Set the ISO week number of the year of a date

• Syntax undefined Date.setISOWeek(Number w , [ Boolean utc ])
  
  When setting the week number of a date the date becomes the monday of that week. If utc is true then universal time is used; otherwise the local time is used.
• Parameters

  Number w

  The week number

  Boolean utc (Optional)

  Set to true to use UTC.

• Return value No explicit return value. Default value of undefined is returned.
• Examples

  To set the week to 34 of the year 2007

  // Create date
  var d = new Date(2008,0,1)
  // Set the week
  d.setISOWeek(34);
  // Output is ' Monday 20th of August 2007'

• Related Date.getISOWeek   
• Resources See ISO 8601 at Wikipedia.org if you are curious about how week numbers are defined.
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  Source

  Unless otherwise noted all code in the JSLab Standard Library is licensed as GPLv3. See http://www.gnu.org/licenses/gpl.html for the entire license.

  This function has dependencies and will not work stand-alone. Use the download button above instead of copy/paste.

  // ************************************************************************** // Copyright 2007 - 2009 Tavs Dokkedahl // Contact: http://www.jslab.dk/contact.php // // This file is part of the JSLab Standard Library (JSL) Program. // // JSL is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 3 of the License, or // any later version. // // JSL is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. // *************************************************************************** // Set the week number of a date. The date becomes the monday of that week Date.prototype.setISOWeek = function(w,utc) { var y = utc ? this.getUTCFullYear() : this.getFullYear(); var d = Date.getFirstDateInWeek(y,w); this.setTime(d.getTime()); };