JS面向对象编程 for Cookie

/*
* Js Class Cookie
* Author:Mr Co
*/
var Cookie = function(/*Cookie名称*/name){
this.$name = name;
var allcookies = document.cookie;
if(allcookies == ) return;
var cookies = allcookies.split(;);
var cookie = null;
for(var i = 0; i < cookies.length; i++){
if(cookies[i].substring(0,name.length + 1) == (name + =)){
cookie = cookies[i];
break;
}
}
if(cookie == null) return;
var cookieval = cookie.substring(name.length + 1);
var a = cookieval.split(&);
for(var i = 0; i < a.length; i++){
a[i] = a[i].split(:);
}
for(var i = 0; i < a.length; i ++){
this[a[i][0]] = decodeURIComponent(a[i][1]);
}
}
/*
* 保存Cookie数据对象
*/
Cookie.prototype.store = function(/*过期时间(1表示一天以此类推)*/daysToLive,/*当前Cookie有效地址*/path,/*当前Cookie有效域名访问*/domain,/*安全性*/secure){
var cookieval = ;
for(var prop in this){
if((prop.charAt(0) == $) || ((typeof this[prop]) == function)) continue;
if(cookieval != ) cookieval += &;
cookieval += prop + : + encodeURIComponent(this[prop]);
}
var cookie = this.$name + = + cookieval;
if(daysToLive || daysToLive == 0){
cookie += ; max-age= + (daysToLive * 24 *60 *60);
}
if(path) cookie += ; path= + path;
if(domain) cookie += ;domain= + domain;
if(secure) cookie += ;secure;
document.cookie = cookie;
}
/*
* 移除Cookie数据对象指定属性
*/
Cookie.prototype.remove = function(/*当前Cookie有效地址*/path,/*当前Cookie有效域名访问*/domain,/*安全性*/secure){
for(var prop in this){
if(prop.charAt(0) != $ && typeof this[prop] != function) delete this[prop];
}
this.store(0,path,domain,secure);
}
/*
* 验证当前客户端浏览器是否支持Cookie
*/
Cookie.IsAllowCookie = function(){
if(!navigator.cookieEnabled){
alert(温馨提示：\r\n　　您的浏览器当前已禁用页面Cookie！这可能会导致您在\r\n\r\n选择食物数据的时候刷新页面丢失您已选择的食物数据！\r\n\r\n建议您启用浏览器Cookie!);
return false;
}
return true;
}

function testFn(){
var cookie = new Cookie(Test);
if(!cookie.name || !cookie.color){
cookie.name = prompt(What is your name:,);
cookie.color = prompt(What is your favorite color:,);
}
if(!cookie.visits) cookie.visits = 1;
else cookie.visits++;
cookie.store(10);
alert(color: + cookie.color + name: + cookie.name + visits: + cookie.visits);
}