js 设置 cookies , 读取cookies

 /**
       *  js 设cookies
       * @param name  存储的名称  列如 name = 'one_name';
       * @param value  存储的值 列如   value = '123'
       * @param expiredays  过期时间  列如 希望 2分钟过期  expiredays = 60 * 2000 ——> exp.setTime(exp.getTime() + 60 * 2000);
       */
        setCookie:function(name,value,expiredays){
          var exp = new Date();
          exp.setTime(exp.getTime() + expiredays);//过期时间
          document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString();
          console.log(name + "=" + escape(value) + ";expires=" + exp.toGMTString());
        },
      /**
       * 获取cookies
       * @param name  要获取的键名
       * @returns {string}
       */
        getCookie:function(name) {
          if (document.cookie.length > 0)     {
             var start = document.cookie.indexOf(name + "=");
            if (start != -1){
              var startIndex = start + name.length + 1;
              var endIndex = document.cookie.indexOf(";", startIndex)
              if (endIndex == -1)
                endIndex = document.cookie.length
              return unescape(document.cookie.substring(startIndex, endIndex))
            }
          }
          return ""
        },