Method Date.getTimezoneOffset

Get the local timezone offset from UTS in minutes.

• Syntax Number Date.getTimezoneOffset()
  
  This function is a modification of the native Date.getTimezoneOffset as the original one is flawed. The native function returns the offset with the wrong sign so that an offset of 180 minutes becomes -180 minutes. The only thing this function does is multiply the original return value by -1.
• Return value The timezone offset from UTC/GMT in minutes.
• Download
  Download this function including dependencies
  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.

  // ************************************************************************** // 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/>. // *************************************************************************** // Rewrite native Date.getTimezoneOffset to return values with correct sign Date.prototype._getTimezoneOffset = Date.prototype.getTimezoneOffset; Date.prototype.getTimezoneOffset = function() { return this._getTimezoneOffset() * -1; };