jquery.cookie.js

/*jshint eqnull:true */
/*!
 * jQuery Cookie Plugin v1.2
 * https://github.com/carhartl/jquery-cookie
 *
 * Copyright 2011, Klaus Hartl
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.opensource.org/licenses/GPL-2.0
 */
(function ($, document, undefined) {

  var pluses = /\+/g;

  function raw(s) {
    return s;
  }

  function decoded(s) {
    return decodeURIComponent(s.replace(pluses, ' '));
  }

  $.cookie = function (key, value, options) {

    // key and at least value given, set cookie...
    if (value !== undefined && !/Object/.test(Object.prototype.toString.call(value))) {
      options = $.extend({}, $.cookie.defaults, options);

      if (value === null) {
        options.expires = -1;
      }

      if (typeof options.expires === 'number') {
        var days = options.expires, t = options.expires = new Date();
        t.setDate(t.getDate() + days);
      }

      value = String(value);

      return (document.cookie = [
        encodeURIComponent(key), '=', options.raw ? value : encodeURIComponent(value),
        options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
        options.path    ? '; path=' + options.path : '',
        options.domain  ? '; domain=' + options.domain : '',
        options.secure  ? '; secure' : ''
      ].join(''));
    }

    // key and possibly options given, get cookie...
    options = value || $.cookie.defaults || {};
    var decode = options.raw ? raw : decoded;
    var cookies = document.cookie.split('; ');
    for (var i = 0, parts; (parts = cookies[i] && cookies[i].split('=')); i++) {
      if (decode(parts.shift()) === key) {
        return decode(parts.join('='));
      }
    }

    return null;
  };

  $.cookie.defaults = {};

  $.removeCookie = function (key, options) {
    if ($.cookie(key, options) !== null) {
      $.cookie(key, null, options);
      return true;
    }
    return false;
  };

})(jQuery, document);