cookie操作神器

   function jsonTostr(o){

             var arr = [];

            var fmt = function(s) {

                if (typeof s == 'object' && s != null) return jsonTostr(s);

                return /^(string|number)$/.test(typeof s) ? '"' + s + '"' : s;

              }

            for (var i in o) arr.push(i+":" + fmt(o[i]));

            return "{" + arr.join(",") + "}";

         }

   

function setCookie(c_name,value,expiredays){

var exdate=new Date();

exdate.setDate(exdate.getDate()+expiredays);

document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());

}

 

function getCookie(c_name){

if (document.cookie.length>0){

 c_start=document.cookie.indexOf(c_name + "=")

 if (c_start!=-1){ 

c_start=c_start + c_name.length+1 

c_end=document.cookie.indexOf(";",c_start)

if (c_end==-1)

c_end=document.cookie.length

return unescape(document.cookie.substring(c_start,c_end))

} 

 }

return ""

}

再加上eval("str="+str)