http://script.xhtmlhelp.net/VBscript/200610/10485.shtml
javascript操作cookie
/**
* Read the JavaScript cookies tutorial at:
* http://www.netspade.com/articles/javascript/cookies.xml
*/
/**
* Sets a Cookie with the given name and value.
*
* name Name of the cookie
* value Value of the cookie
* [expires] Expiration date of the cookie (default: end of current session)
* [path] Path where the cookie is valid (default: path of calling document)
* [domain] Domain where the cookie is valid
* (default: domain of calling document)
* [secure] Boolean value indicating if the cookie transmission requires a
* secure transmission
*/
function setCookie(name, value, expires, path, domain, secure)
{
document.cookie= name + "=" + escape(value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "");
}
/**
* Gets the value of the specified cookie.
*
* name Name of the desired cookie.
*
* Returns a string containing value of specified cookie,
* or null if cookie does not exist.
*/
function getCookie(name)
{
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1)
{
begin = dc.indexOf(prefix);
if (begin != 0) return null;
}
else
{
begin += 2;
}
var end = document.cookie.indexOf(";", begin);
if (end == -1)
{
end = dc.length;
}
return unescape(dc.substring(begin + prefix.length, end));
}
/**
* Deletes the specified cookie.
*
* name name of the cookie
* [path] path of the cookie (must be same as path used to create cookie)
* [domain] domain of the cookie (must be same as domain used to create cookie)
*/
function deleteCookie(name, path, domain)
{
if (getCookie(name))
{
document.cookie = name + "=" +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}
function setCookies(name,value)
{
var Days = 30; //此 cookie 将被保存 30 天
var exp = new Date(); //new Date("December 31, 9998");
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape(value) +";expires="+ exp.toGMTString();
}
function getCookies(name)
{
var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
if(arr != null) return unescape(arr[2]); return null;
}
function delCookies(name)
{
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getCookie(name);
if(cval!=null) document.cookie=name +"="+cval+";expires="+exp.toGMTString();
}
function getCookie(name)
{
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1)
{
begin = dc.indexOf(prefix);
if (begin != 0) return null;
}
else
{
begin += 2;
}
var end = document.cookie.indexOf(";", begin);
if (end == -1)
{
end = dc.length;
}
return unescape(dc.substring(begin + prefix.length, end));
}
这个应该不行吧.
=======================================
//另一个读取COOKIE的方法
function GetCookieData(sL)
{
var sRet="";
var sC=""+document.cookie;
if(sC.length>0)
{
var aC=sC.split(";",100);
var iC=aC.length;
for(var i=0;i<iC;i++)
{
if(aC[i].indexOf(sL+"=")!=-1)
{
var aRet=aC[i].split("=");
sRet=unescape(aRet[1]);
break;
}
}
}
return sRet;
}
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注释：
------------------------------------------------------------------
document.cookie = 读取存取在你本地的cookie信息
JavaScript中indexOf函数
JavaScript中indexOf函数方法是返回 String 对象内第一次出现子字符串的字符位置。使用方法：
strObj.indexOf(subString[, startIndex])
其中strObj是必选项。String 对象或文字。
subString是必选项。要在 String 对象中查找的子字符串。
starIndex是可选项。该整数值指出在 String 对象内开始查找的索引。
如果省略，则从字符串的开始处查找。
对于JavaScript的indexOf忽略大小写，
JavaScript中indexOf函数方法返回一个整数值，
指出 String 对象内子字符串的开始位置。如果没有找到子字符串，则返回 -1。
如果 startindex 是负数，则 startindex 被当作零。如果它比最大的字符位置索引还大，则它被当作最大的可能索引。
indexOf函数是从左向右执行查找。否则，该方法与 lastIndexOf 相同。
下面的示例说明了indexOf函数方法的用法。
function IndexDemo(str2){
var str1 = "BABEBIBOBUBABEBIBOBU"
var s = str1.indexOf(str2);
return(s);
}
