jQuery读写操作cookie的代码演示,可以对cookie进行读写操作,可以设置域名和过期时间
插件代码
/*! * jQuery Cookie Plugin v1.3 * 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, ' ')); } var config = $.cookie = function (key, value, options) { // write if (value !== undefined) { options = $.extend({}, config.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 = config.json ? JSON.stringify(value) : String(value); return (document.cookie = [ encodeURIComponent(key), '=', config.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('')); } // read var decode = config.raw ? raw : decoded; var cookies = document.cookie.split('; '); for (var i = 0, l = cookies.length; i < l; i++) { var parts = cookies[i].split('='); if (decode(parts.shift()) === key) { var cookie = decode(parts.join('=')); return config.json ? JSON.parse(cookie) : cookie; } } return null; }; config.defaults = {}; $.removeCookie = function (key, options) { if ($.cookie(key) !== null) { $.cookie(key, null, options); return true; } return false; }; })(jQuery, document);
使用方法:
提供方便方法操作cookie : 
$.cookie('the_cookie'); // 获得cookie $.cookie('the_cookie', 'the_value'); // 设置cookie $.cookie('the_cookie', 'the_value', { expires: 7 }); //设置带时间的cookie 7天 $.cookie('the_cookie', '', { expires: -1 }); // 删除 $.cookie('the_cookie', null); // 删除 cookie //设置cookie的名值对,有效期,路径,域,安全 $.cookie(’name’, ‘value’, {expires: 7, path: ‘/’, domain: ‘jquery.com’, secure: true}); 如果在action中出现乱码,需URLDecoder.decode(cookievalue,"utf-8")