var Cookie = {    set: function (name, value, days) {        // 写入        var days = days || 1;  //默认1天        var d = new Date;        d.setTime(d.getTime() + 24 * 60 * 60 * 1000 * days);        window.document.cookie = name + "=" + value + ";path=/;expires=" + d.toGMTString();    },    get: function (name) {        // 获取        var v = window.document.cookie.match(‘(^|;) ?‘ + name + ‘=([^;]*)(;|$)‘);        return v ? v[2] : null;    },    delete: function (name) {        // 删除        this.set(name, ‘‘, -1);    }};