$.cookie(‘f_city‘,‘北京|101010100|,锦州|101070701|‘,{expires: 999, path: ‘/‘,domain: ‘weather.com.cn‘})

$.cookie(‘f_city‘,null,{ path: ‘/‘})   //删除当前域 www.weather.com.cn域下的 f_city$.cookie(‘f_city‘,null,{ path: ‘/‘, domain: ‘weather.com.cn‘})   //删除 .weather.com.cn域下的 f_city

var cookie_f_city= $.cookie(‘f_city‘); //读取cookie只有一种写法，不接受｛domain｝参数，也就是说，当有域同名参数时，只读创建最早的 f_city

/** * Cookie plugin * * Copyright (c) 2006 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 * *//** * *1、设置cookie的值，比如我们要设置变量名为userid对应值为123的cookie，代码如下： * $.cookie(‘userid‘,‘123‘); * *2、新建一个cookie，并设置cookie的有效期 路径 域名等，代码如下： * $.cookie(‘userid, ‘123‘, {expires: 7, path: ‘/‘, domain: ‘jquery.com‘, secure: true});注意：如果去掉后面{}的参数，新建后将以默认设置生效。 * *3、删除cookie，即把对应cookie值置为null，代码如下： * $.cookie(‘userid‘, null); * *4、读取cookie，如读取变量名为userid的cookie值，代码如下： * var uId= $.cookie(‘userid‘); * *//** * Get the value of a cookie with the given name. * * @example $.cookie(‘the_cookie‘); * @desc Get the value of a cookie. * * @param String name The name 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(name, value, options) {    if (typeof value != ‘undefined‘) { // name and value given, set cookie        options = options || {};        if (value =http://www.mamicode.com/== null) {            value = ‘‘;            options.expires = -1;        }        var expires = ‘‘;        if (options.expires && (typeof options.expires == ‘number‘ || options.expires.toUTCString)) {            var date;            if (typeof options.expires == ‘number‘) {                date = new Date();                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));            } else {                date = options.expires;            }            expires = ‘; expires=‘ + date.toUTCString(); // use expires attribute, max-age is not supported by IE        }        var path = options.path ? ‘; path=‘ + options.path : ‘‘;        var domain = options.domain ? ‘; domain=‘ + options.domain : ‘‘;        var secure = options.secure ? ‘; secure‘ : ‘‘;        document.cookie = [name, ‘=‘, encodeURIComponent(value), expires, path, domain, secure].join(‘‘);    } else { // only name given, get cookie        var cookieValue = http://www.mamicode.com/null;        if (document.cookie && document.cookie != ‘‘) {            var cookies = document.cookie.split(‘;‘);            for (var i = 0; i < cookies.length; i++) {                var cookie = jQuery.trim(cookies[i]);                // Does this cookie string begin with the name we want?                if (cookie.substring(0, name.length + 1) == (name + ‘=‘)) {                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));                    break;                }            }        }        return cookieValue;    }};