intern的项目纠结js里cookie的用法

cookie有这么几个属性，name,value,expireDate,domain,path

项目遇到html/person/person.html设置的cookie无法从html/alipay/pay.asp中读出

结果：cookie的路径问题，person.html默认的path是自己的路径，想要让隔壁路径的网页访问该cookie须设置path=/

之后，一并把domain也弄清楚了，www.test.com/test/test.aspx默认domain为www.test.com，ti.test.com设置的cookie要让t2.test.com访问须设置domain=.test.com

js原生封装函数cookie:

var CookieUtil={
get:function(name){
var cookieName=encodeURIComponent(name)+"=",
cookieStart=document.cookie.indexOf(cookieName),
cookieValue=null;
if(cookieStart>-1){
var cookieEnd=document.cookie.indexOf(";",cookieStart);
if(cookieEnd==-1){
cookieEnd=document.cookie.length;
}
cookieValue=decodeURIComponent(document.cookie.substring(cookieStart+cookieName.length,cookieEnd));
}
return cookieValue;
},
set:function(name,value,expires,path,domain,secure){
car cookieText=encodeURIComponent(name)+"="+
encodeURIComponent(value);
if(expires instanceof Date){
cookieText+=";expires="+expires.toGMTString();
}
if(path){
cookieText+=";path="+path;
}
if(domain){
cookieText+=";domain="+domain;
}
if(secure){
cookieText+=";secure";
}
document.cookie=cookieText;
},
unset:function(name,path,domain,secure){
this.set(name,"",new Date(0),path,domain,secure);
}
};