JS面向对象编程 for Cookie

各位如果有更好的见解可讨论下！

/* 
* 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：rn　　您的浏览器当前已禁用页面Cookie！这可能会导致您在rnrn选择食物数据的时候刷新页面丢失您已选择的食物数据！rnrn建议您启用浏览器Cookie!'); 
return false; 
} 
return true; 
} 

测试JS DEMO

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); 
}