求一段js *** 作cookie的代码

function setCookie(name,value,expries)

{

var curcookie = name + "=" + encodeURI(value)

+((expires) ";expires=" + expirestoGMTString() : "")

+((path) ";path=" + path : "")

documentcookie = curcookie;

}

function getCookie(name)

{

if(documentcookielength > 0)

{

start = documentcookieindexOf(name + "=");

if( start != -1)

{

start = start + namelength + 1;

end = documentcookieindexOf(";",start);

if( end == -1)

{

end = documentcookielength;

}

}

return decodeURI(documentcookiesubstring(start,end));

}

return "";

}

function Deletecookie (name) { //删除名称为name的Cookie

var exp = new Date();

expsetTime (expgetTime() - 1);

var cval = GetCookie (name);

documentcookie = name + "=" + cval + "; expires=" + exptoGMTString();

}

function Clearcookie() //清除COOKIE

{

var temp=documentcookiesplit(";");

var loop3;

var ts;

for (loop3=0;loop3 {

ts=temp[loop3]split("=")[0];

if (tsindexOf(’mycat’)!=-1)

DeleteCookie(ts); //如果ts含“mycat”则执行清除

}

}

if(username=="" || userid==""){

document表单名action="需要提交的路径";

document表单名submit();

}

这样子就可以判断了啊 为什么你要利用cookies迷糊

ASP获取cookies内的参数不会

用js向cookie中保存数据、获取数据的方法如下：

function GetCookieVal(offset)

//获得Cookie解码后的值

{

var endstr = documentcookieindexOf (";", offset);

if (endstr == -1)

endstr = documentcookielength;

return unescape(documentcookiesubstring(offset, endstr));

}

//---------------------------

function SetCookie(name, value)

//设定Cookie值

{

var expdate = new Date();

var argv = SetCookiearguments;

var argc = SetCookieargumentslength;

var expires = (argc > 2) argv[2] : null;

var path = (argc > 3) argv[3] : null;

var domain = (argc > 4) argv[4] : null;

var secure = (argc > 5) argv[5] : false;

if(expires!=null) expdatesetTime(expdategetTime() + ( expires 1000 ));

documentcookie = name + "=" + escape (value) +((expires == null) "" : ("; expires="+ expdatetoGMTString()))

+((path == null) "" : ("; path=" + path)) +((domain == null) "" : ("; domain=" + domain))

+((secure == true) "; secure" : "");

}

//---------------------------------

function DelCookie(name)

//删除Cookie

{

var exp = new Date();

expsetTime (expgetTime() - 1);

var cval = GetCookie (name);

documentcookie = name + "=" + cval + "; expires="+ exptoGMTString();

}

//------------------------------------

function GetCookie(name)

//获得Cookie的原始值

{

var arg = name + "=";

var alen = arglength;

var clen = documentcookielength;

var i = 0;

while (i < clen)

{

var j = i + alen;

if (documentcookiesubstring(i, j) == arg)

return GetCookieVal (j);

i = documentcookieindexOf(" ", i) + 1;

if (i == 0) break;

}

return null;

}

SetCookie("username1",99);

alert(GetCookie("username1"));

// 函数名称： getCookie

// 函数功能： 读取cookie函数

// 入口参数： Name：cookie名称

function getCookie(Name) {

var search = Name + "=" ;

if(documentcookielength > 0) {

offset = documentcookieindexOf(search) ;

if(offset > -1) {

offset += searchlength ;

end = documentcookieindexOf(";", offset)

if(end > -1) {

end = documentcookielength ;

}

return unescape(documentcookiesubstring(offset, end)) ;

} else {

return "" ;

}

}

}

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