JAVASCRIPT中怎么使用COOKIE　　　　来源 http://www.cncsk.com　佚名
读取cookie：
function readCookie(name)
{
var cookieValue = "";
var search = name + "=";
if(documents.cookie.length > 0)
{
offset = documents.cookie.indexOf(search);
if (offset != -1)
{
offset += search.length;
end = documents.cookie.indexOf(";", offset);
if (end == -1) end = documents.cookie.length;
cookieValue = unescape(documents.cookie.substring(offset, end))
}
}
return cookieValue;
}
alert( readCookie("myCookie") );

写入cookie：
function writeCookie(name, value, hours)
{
var expire = "";
if(hours != null)
{
expire = new Date((new Date()).getTime() + hours * 3600000);
expire = "; expires=" + expire.toGMTString();
}
documents.cookie = name + "=" + escape(value) + expire;
}
writeCookie("myCookie", "my name", 24);

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+ 号字符串连接符号

至于cookies，请看：

用 COOKIES 记录一个人访问次数的小程序。



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function setCookie(name,value)
{
var Days = 30;
var exp = new Date(); //new Date("December 31, 9998");
exp.setTime(exp.getTime() + Days*24*60*60*1000);
documents.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getCookie(name)
{
var arr,reg=new RegExp("(^ | )"+name+"=([^;]*)(; |$)");
if(arr=documents.cookie.match(reg)) return unescape(arr[2]);
else return null;
}
function delCookie(name)
{
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getCookie(name);
if(cval!=null) documents.cookie= name + "="+cval+";expires="+exp.toGMTString();
}
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http://www.hkln.net/js/advance/cookie.htm
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读写cookie的时候最好用escape 和unescape
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浏览器地址栏打：

javascript:alert(documents.cookie);

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