JavaScript处理cookie

//设置cookies函数function?setcookie?(?name?,?value?){????var?Days?=?30?;?????var?exp ??=?new?Date?();????????exp?.?setTime?(?exp?.?getTime?()?+?Days?*?24?*?60?*?60?*?1000?);???document?.?cookie?=?name?+?"="?+?escape?(?value?)?+?";expires="?+?exp?.?toGMTString?();}//取cookies函数 ?????function?getcookie?(?name?)??{?????var?arr?=?document?.?cookie?.?match?(?new?RegExp?(?"(^| )"?+?name?+?"=([^;]*)(;|$)"?));????if?(?arr?!=?null?)?return?unescape?(?arr?[?2?]);?return?null?;}//删除cookiefunction?delcookie?(){var?name?=?"comparelist"?;????var?exp?=?new?Date?();???exp?.?setTime?(?exp?.?getTime?()?-?1?);????var?cval?=?getcookie?(?name?);????document?.?getElementById?(?"comparelist"?).?innerHTML?=?''?;????if?(?cval?!=?null?)?document?.?cookie?=?name?+?"="?+?cval?+?";expires="?+?exp?.toGMTString?();}??