Use ie userdata behavior as a client-side Data Storage

I described how to use jstore as a client-side persistent storage in my last post. the jstore manage a number of different storage engines, such as gears and flash objects. but they all need additional downloads.

The IE browser has provide a mechanic called userdata behavior to store Max 128kb data a page, 1024kb a domain. this is a portion of DHTML that suppoted by ie5 or later. refer to this article: userdata behavior.

The userdata behavior is much like what Cookie does, but it supply a much bigger storage. the data is stored in the C: \ Documents ents and Settings \ User Name \ userdata \ folder, which will be visible even if you refresh the page or re-open the IE browser. the data will always exist, unless you delete it manually or set the expire date.

Here is an example:

 
 $ (function () {
 
 var userdata = $ ('# userdata') [0]; 
 
 
 $ ('# getdata '). click (function () {
 $ ('# data '). val (''); 
 userdata. load ('My _ user_data_storage '); 
 $ (' # data '). val (userdata. getattribute ('data _ 1'); 
 
}); 
 
 
 $ ('# savedata '). click (function () {
 userdata. setattribute ('data _ 1', $ ('# data '). val (); 
 userdata. save ('My _ user_data_storage '); 
 
 });