jquery实现cookie存取值

//设定Cookie值
function SetCookie(name, value) {
    var expdate = new Date(); var argv = SetCookie.arguments;
    var argc = SetCookie.arguments.length;
    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) expdate.setTime(expdate.getTime() + (expires * 1000));
    document.cookie = name + "=" + escape(value) + ((expires == null) ? "" : ("; expires=" + expdate.toGMTString()))
    + ((path == null) ? "" : ("; path=" + path))
    + ((domain == null) ? "" : ("; domain=" + domain))
    + ((secure == true) ? "; secure" : "");
}

//取Cookie值
function GetCookieVal(offset)//获得Cookie解码后的值
{
    var endstr = document.cookie.indexOf(";", offset);
    if (endstr == -1)
        endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}