JQUERY   16

jquery.cookie.js

Guest on 26th May 2021 11:09:26 PM

  1. /**
  2.  * Cookie plugin
  3.  *
  4.  * Copyright (c) 6 Klaus Hartl (stilbuero.de)
  5.  * Dual licensed under the MIT and GPL licenses:
  6.  * http://www.opensource.org/licenses/mit-license.php
  7.  * http://www.gnu.org/licenses/gpl.html
  8.  *
  9.  */
  10.  
  11. /**
  12.  * Create a cookie with the given name and value and other optional parameters.
  13.  *
  14.  * @example $.cookie('the_cookie', 'the_value');
  15.  * @desc Set the value of a cookie.
  16.  * @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });
  17.  * @desc Create a cookie with all available options.
  18.  * @example $.cookie('the_cookie', 'the_value');
  19.  * @desc Create a session cookie.
  20.  * @example $.cookie('the_cookie', null);
  21.  * @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain
  22.  *       used when the cookie was set.
  23.  *
  24.  * @param String name The name of the cookie.
  25.  * @param String value The value of the cookie.
  26.  * @param Object options An object literal containing key/value pairs to provide optional cookie attributes.
  27.  * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.
  28.  *                             If a negative value is specified (e.g. a date in the past), the cookie will be deleted.
  29.  *                             If set to null or omitted, the cookie will be a session cookie and will not be retained
  30.  *                             when the the browser exits.
  31.  * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).
  32.  * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).
  33.  * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will
  34.  *                        require a secure protocol (like HTTPS).
  35.  * @type undefined
  36.  *
  37.  * @name $.cookie
  38.  * @cat Plugins/Cookie
  39.  * @author Klaus Hartl/klaus.hartl@stilbuero.de
  40.  */
  41.  
  42. /**
  43.  * Get the value of a cookie with the given name.
  44.  *
  45.  * @example $.cookie('the_cookie');
  46.  * @desc Get the value of a cookie.
  47.  *
  48.  * @param String name The name of the cookie.
  49.  * @return The value of the cookie.
  50.  * @type String
  51.  *
  52.  * @name $.cookie
  53.  * @cat Plugins/Cookie
  54.  * @author Klaus Hartl/klaus.hartl@stilbuero.de
  55.  */
  56. jQuery.cookie = function(name, value, options) {
  57.     if (typeof value != 'undefined') { // name and value given, set cookie
  58.         options = options || {};
  59.         if (value === null) {
  60.             value = '';
  61.             options.expires = -1;
  62.         }
  63.         var expires = '';
  64.         if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
  65.             var date;
  66.             if (typeof options.expires == 'number') {
  67.                 date = new Date();
  68.                 date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
  69.             } else {
  70.                 date = options.expires;
  71.             }
  72.             expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
  73.         }
  74.         // CAUTION: Needed to parenthesize options.path and options.domain
  75.         // in the following expressions, otherwise they evaluate to undefined
  76.         // in the packed version for some reason...
  77.         var path = options.path ? '; path=' + (options.path) : '';
  78.         var domain = options.domain ? '; domain=' + (options.domain) : '';
  79.         var secure = options.secure ? '; secure' : '';
  80.         document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
  81.     } else { // only name given, get cookie
  82.         var cookieValue = null;
  83.         if (document.cookie && document.cookie != '') {
  84.             var cookies = document.cookie.split(';');
  85.             for (var i = 0; i < cookies.length; i++) {
  86.                 var cookie = jQuery.trim(cookies[i]);
  87.                 // Does this cookie string begin with the name we want?
  88.                 if (cookie.substring(0, name.length + 1) == (name + '=')) {
  89.                     cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
  90.                     break;
  91.                 }
  92.             }
  93.         }
  94.         return cookieValue;
  95.     }
  96. };

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