使用cookie(key,value,options)
参数key,value,options(可选)
function cookie(key,value,options){
if(typeof value !== "undefined"){//write
options=options||{}
var cookie=encodeURIComponent(key)+"="+encodeURIComponent(value);
if (typeof options.expries==="number"){
var date=new Date();
date.setDate(date.getDate()+options.expries);
cookie += ";expries="+date.toUTCString();
}
if(options.path)
cookie += ";path="+options.path;
if(options.domain)
cookie += ";domain="+options.domain;
if(options.secure)
cookie += ";secure";
document.cookie=cookie;
}else{//read
var cookies=document.cookie.split(";");
for(var i=0;i<cookies.length;i++){
var cookie=cookies[i].split("=");
var name=decodeURIComponent(cookie.shift());
if (name===key)
return decodeURIComponent(cookie.join("="));
}
return null;
}
}
function removeCookie(key,options){//remove
options=options||{};
options.expries=-1;
cookie(key,"",options);
}