////////////////////////////////////////////////////////////////////////// // CookieTin.js * How to use a cookie to store/retrieve records with fields // My first attempt ... :-)). Usefull in creating order forms and so on. ////////////////////////////////////////////////////////////////////////// // In your html source, put the following line in the header // // // // rest of header // // Make sure this file is where src is pointing to!! // From now on you can reference the global variables (indicated below) and // use all functions in your whole html file. ////////////////////////////////////////////////////////////////////////// // These (!) cookies use a fixed layout, as follows: // Cookie overall: "CookieName||Record1||Record2||....||RecordN" // Each record in it: "Identifyer^^Field1^^Field2^^Field3^^....^^FieldN" // Of course never use || or ^^ within a field or identifyer. // If you must do so, then change the global variables below. ////////////////////////////////////////////////////////////////////////// // Read the function comments to figure out how to use everything. // Note: cookies can be up to 4kb, no more. Sufficient for 1 order form. ////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////// // Global variables which you can use in your html file as well. This is handy, // if for some reason you need to change these variables, change them here and // your html page can remain unaltered. var gCookieCRLF = "{CRLF}"; var gCookieTAB = "{TAB}"; function CookieCreate(NameOfCookie) //Creates the simplest cookie, which is the name only. // Code: MyCookie = CookieCreate("NewCookieName"); { return NameOfCookie } function CookieLoad(NameOfCookie) // Loads an existing cookie, or returns "" // Code: Mycookie = CookieLoad("ThisIsWhatICalledItWhenIMadeIt"); { if (document.cookie.length > 0) { //alert(unescape(document.cookie)); begin = document.cookie.indexOf(NameOfCookie+"="); if (begin != -1) {begin += NameOfCookie.length+1; end = document.cookie.indexOf(";", begin); if (end == -1) {end = document.cookie.length}; return unescape(document.cookie.substring(begin, end)); } } //alert("No cookie") return ""; } function CookieSave(NameOfCookie, sCookie, iDays, sPath) // Saves the cookie to browser memory. It is a session-only cookie, // i.e. when you close your browser, the cookie will be lost. // Code: CookieSave("ThisIsWhatICallIt", MyCookie); // iDays: Expiry after n days. 0 is session cookie, <0 is remove now. { var sExpires = ''; if (iDays) { var date = new Date(); date.setTime(date.getTime()+(iDays*24*60*60*1000)); var sExpires = "; expires="+date.toGMTString(); } if (!sPath) var sPath = "/"; sPath = "; " + sPath; document.cookie = NameOfCookie + "=" + escape(sCookie) + sExpires + sPath; } function CookieKill (NameOfCookie) // Remove a cookie from memory // Code: CookieKill ("ThisIsWhatICalledIt"); { if (CookieLoad(NameOfCookie)) { document.cookie = NameOfCookie + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT"; } } function CookieBreak(sCookie) // Break the cookie into individual records in an array // Code on how to use it: var a = CookieBreak(MyCookie); // This is how to retrieve records 1 to the last one in the array (element [0] is the cookie name) // for (i=0; i