JavaScript操作cookie类实例
本文实例讲述了JavaScript操作cookie类。分享给大家供大家参考。具体如下：
用法：
一、设置cookie
varcookie=newJSCookie();
//普通设置
cookie.SetCookie("key1","val1");
//过期时间为一年
varexpire_time=newDate();
expire_time.setFullYear(expire_time.getFullYear()+1);
cookie.SetCookie("key2","val2",expire_time);
//设置域及路径，带过期时间
cookie.SetCookie("key3","val3",expire_time,".cnblogs.com","/");
//设置带子键的cookie,子键分别是k1,k2,k3
cookie.SetCookie("key4","k1=1&k2=2&k3=3");
二、读取cookie
//简单获取
cookie.GetCookie("key1");
cookie.GetCookie("key2");
cookie.GetCookie("key3");
cookie.GetCookie("key4");
//获取key4的子键k1值
cookie.GetChild("key4","k1");
三、删除
cookie.Expire("key1");
cookie.Expire("key2");
cookie.Expire("key3");
cookie.Expire("key4");
示例：
<scripttype="text/javascript">
String.prototype.Trim=function()
{
returnthis.replace(/^\s+/g,"").replace(/\s+$/g,"");
}
functionJSCookie()
{
this.GetCookie=function(key)
{
varcookie=document.cookie;
varcookieArray=cookie.split(';');
vargetvalue="";
for(vari=0;i<cookieArray.length;i++)
{
if(cookieArray[i].Trim().substr(0,key.length)==key)
{
getvalue=cookieArray[i].Trim().substr(key.length+1);
break;
}
}
returngetvalue;
};
this.GetChild=function(cookiekey,childkey)
{
varchild=this.GetCookie(cookiekey);
varchilds=child.split('&');
vargetvalue="";
for(vari=0;i<childs.length;i++)
{
if(childs[i].Trim().substr(0,childkey.length)==childkey)
{
getvalue=childs[i].Trim().substr(childkey.length+1);
break;
}
}
returngetvalue;
};
this.SetCookie=function(key,value,expire,domain,path)
{
varcookie="";
if(key!=null&&value!=null)
cookie+=key+"="+value+";";
if(expire!=null)
cookie+="expires="+expire.toGMTString()+";";
if(domain!=null)
cookie+="domain="+domain+";";
if(path!=null)
cookie+="path="+path+";";
document.cookie=cookie;
};
this.Expire=function(key)
{
expire_time=newDate();
expire_time.setFullYear(expire_time.getFullYear()-1);
varcookie=""+key+"=e;expires="+expire_time+";"
document.cookie=cookie;
}
}
</script>
至此完毕.
希望本文所述对大家的javascript程序设计有所帮助。