Plugin para cookies con JQuery

Esta es una biblioteca Javascript para acceder y manipular cookies HTTP del navegador web. Se puede obtener un o una lista de cookies, cookies, borrar las cookies.

cookie.js

/*jslint browser: true */ /*global jQuery: true */    /**   * jQuery Cookie plugin   *   * Copyright (c) 2010 Klaus Hartl (stilbuero.de)   * Dual licensed under the MIT and GPL licenses:   * http://www.opensource.org/licenses/mit-license.php   * http://www.gnu.org/licenses/gpl.html   *   */    // TODO JsDoc    /**   * Create a cookie with the given key and value and other optional parameters.   *   * @example $.cookie('the_cookie', 'the_value');   * @desc Set the value of a cookie.   * @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });   * @desc Create a cookie with all available options.   * @example $.cookie('the_cookie', 'the_value');   * @desc Create a session cookie.   * @example $.cookie('the_cookie', null);   * @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain   *       used when the cookie was set.   *   * @param String key The key of the cookie.   * @param String value The value of the cookie.   * @param Object options An object literal containing key/value pairs to provide optional cookie attributes.   * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.   *                             If a negative value is specified (e.g. a date in the past), the cookie will be deleted.   *                             If set to null or omitted, the cookie will be a session cookie and will not be retained   *                             when the the browser exits.   * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).   * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).   * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will   *                        require a secure protocol (like HTTPS).   * @type undefined   *   * @name $.cookie   * @cat Plugins/Cookie   * @author Klaus Hartl/klaus.hartl@stilbuero.de   */    /**   * Get the value of a cookie with the given key.   *   * @example $.cookie('the_cookie');   * @desc Get the value of a cookie.   *   * @param String key The key of the cookie.   * @return The value of the cookie.   * @type String   *   * @name $.cookie   * @cat Plugins/Cookie   * @author Klaus Hartl/klaus.hartl@stilbuero.de   */ 

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

    // key and value given, set cookie...
    if (arguments.length > 1 && (value === null || typeof value !== "object")) {
        options = jQuery.extend({}, 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);
        }

        return (document.cookie = [
            encodeURIComponent(key), '=',
            options.raw ? String(value) : encodeURIComponent(String(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 || {};
    var result, decode = options.raw ? function (s) { return s; } : decodeURIComponent;
    return (result = new RegExp('(?:^|; )' + encodeURIComponent(key) + '=([^;]*)').exec(document.cookie)) ? decode(result[1]) : null;
};

funciones js

   $(function() {
                var COOKIE_NAME = 'test_cookie';
                var ADDITIONAL_COOKIE_NAME = 'additional';
                var options = { path: '/', expires: 10 };

                // set cookie by number of days
                $('a').eq(0).click(function() {
                    $.cookie(COOKIE_NAME, 'test', options);
                    return false;
                });

                // set cookie by date
                $('a').eq(1).click(function() {
                    var date = new Date();
                    date.setTime(date.getTime() + (3 * 24 * 60 * 60 * 1000));
                    $.cookie(COOKIE_NAME, 'test', { path: '/', expires: date });
                    return false;
                });

                // get cookie
                $('a').eq(2).click(function() {
                    alert($.cookie(COOKIE_NAME));
                    return false;
                });

                // delete cookie
                $('a').eq(3).click(function() {
                    $.cookie(COOKIE_NAME, null, options);
                    return false;
                });

                // set a second cookie
                $('a').eq(4).click(function() {
                    $.cookie(ADDITIONAL_COOKIE_NAME, 'äöüß;foo=bar', { expires: 10 });
                    return false;
                });

                // get second cookie
                $('a').eq(5).click(function() {
                    alert($.cookie(ADDITIONAL_COOKIE_NAME));
                    return false;
                });

                // delete second cookie
                $('a').eq(6).click(function() {
                    $.cookie(ADDITIONAL_COOKIE_NAME, null);
                    return false;
                });
            });

html

<p> <a href="#">Set cookie (by number of days == 10)</a><br>   
           <a href="#">Set cookie (by date == 3 days)</a><br> 
              <a href="#">Get cookie</a><br>  
             <a href="#">Delete cookie</a><br> 
    <a href="#">Set additional cookie</a><br>  
             <a href="#">Get additional cookie</a><br>    
           <a href="#">Delete additional cookie</a></p>