[转]Javascript 操作Cookies类

//原贴 http://bbs.bc-cn.net/dispbbs.asp?BoardID=218&ID=94193
//
 JavaScript Document
document.xCookie=Class.create();
Object.extend(document.xCookie,{
    load: 
function(d) {
        
this.$document=|| document;
        
        
var cookies=this.$document.cookie;
        
var cookieRegEx=/\w+=[^;]+/g;
        
var matchs=cookies.match(cookieRegEx);
        
        
for (var i=0; matchs && i<matchs.length; i++)
        {
            
var arr=matchs[i].split('=');
            
this[arr[0]]=new document.xCookie.cookie(this.$document,arr[0],arr[1]);
        }
    },
    
    save: 
function() {
        
for (var prop in this)
        {
            
if ((prop.charAt(0)!='$') && ((typeof this[prop])!='function') && this[prop].write) 
                
this[prop].write();
        }
    },
    
    clear: 
function() {
        
for (var prop in this)
            
if (this[prop].remove) this[prop].remove();
    },
    
    $: 
function(name) {
        
if (this[name])
            
return this[name];
        
else
        {
            
this[name]=new document.xCookie.cookie(this.$document,name);
            
return this[name];
        }
    }
});


document.xCookie.cookie
=function(document,name,val,timeout,path,domain,secure) {
    
this.$document=document;
    
this.$name=name;
    
if (val) 
        
this.$val=val;
    
else
        
this.$val='';
    
if (timeout)
        
this.$expiration=new Date((new Date()).getTime()+timeout*60000);
    
else
        
this.$expiration=null;
    
if (path)
        
this.$path=path;
    
else
        
this.$path=null;
    
if (domain)
        
this.$domain=domain;
    
else
        
this.$domain=null;
    
if (secure)
        
this.$secure=true;
    
else
        
this.$secure=false;
    
this.read();
}

document.xCookie.cookie.prototype.read
=function() {
    
var valRegEx=/\w+:[^&]+/g;
    
var matchs=this.$val.match(valRegEx);
    
    
for (var i=0;matchs && i<matchs.length; i++)
    {
        
var arr=matchs[i].split(':');
        
this[arr[0]]=unescape(arr[1]);
    }
}

document.xCookie.cookie.prototype.write
=function() {
    
var val=this.toString();
    
var cookie=this.$name+'='+val;
    
if (this.$expiration) cookie+=";expires="+this.$expiration.toGMTString();
    
if (this.$path) cookie+=";path="+this.$path;
    
if (this.$domain) cookie+=";domain="+this.$domain;
    
if (this.$secure) cookie+=";secure";
    
this.$document.cookie=cookie;
}

document.xCookie.cookie.prototype.remove
=function() {
    
var val='';
    
for (var prop in this)
    {
            
if ((prop.charAt(0)=='$')||((typeof this[prop])=='function'))
                
continue;
            
this[prop]=null;
    }
    
this.$expiration=new Date(1970,1,2,0,0,0);
}

document.xCookie.cookie.prototype.toString
=function() {
    
var val='';
    
for (var prop in this)
    {
            
if ((prop.charAt(0)=='$')||((typeof this[prop])=='function'))
                
continue;
            
if (val!='') val+='%';
            val
=prop+':'+escape(this[prop]);
    }
    
return val;
}

//var xCookie=Class.create();
//
Object.extend(xCookie,document.xCookie);



对象:document.xCookie / xCookie (两个对象同等)
方法:
        document.xCookie.load(d)   预加载当前已存cookies,参数d为文档对象,默认为当前文档,即document。此函数是预加载,需在所有cookie操作前使用。
        document.xCookie.save() 保存对cookies的修改
        document.xCookie.clear() 清除当前文档所有cookies
        document.xCookie.$(name) 返回以name命名的cookie对象(document.xCookie.cookie类),相当于asp里的Response.Cookies(name)。用点语法或[]语法访问该cookie的属性值,即document.xCookie.$(name).prop或document.xCookie.$(name)[prop]。如果属性值不存在,则返回undefined(null)


类:document.xCookie.cookie (操作以name命名的cookie对象,document.xCookie.$(name)返回的就是这个类的实例,所以这个类的实例可以不必单独自行创建)
构造函数:
        function(document, name, timeout, path, domain, secure),document为文档对象(必填);name为cookie的名字(必填);timeout为cookie过时设置,单位为分钟,可缺省,默认为暂时保存;后三个参数不在赘述,不明白的请参考有关javascript里的cookie知识,可缺省。
方法:
        class.read(),读取当前cookie的属性值对(创建类实例时已经执行)
        class.write(),写入对当前cookie的修改
        class.remove(),删除当前cookie
        class.toString(),返回属性值对的字符串表示形式
属性:
        class.prop,访问当前cookie的prop属性

举例:
        document.xCookie.load();
        document.xCookie.$('myname').first='terry';
        document.xCookie.$('myname').last='king';
        document.xCookie.$('sex').sex='male';       
        document.xCookie.save();
        alert(document.xCookie.$('myname').toString());
        alert(document.xCookie.$('sex').toString());

备注,压缩包里一共有两个源文件,xCookie+prototype.js是沿用了prototype(1.4)框架的一些方法,需要prototype框架的支持
另外一个xCookie是没有沿用prototype框架的。

原文地址:https://www.cnblogs.com/skyakira/p/576257.html