[jQuery] jQuery.data() identifier not working

[ricardoe]

Hi, I've found a VERY strange behavior while developing a little code.

I'm trying to identify some elements with the jQuery.data(element)
function, this returns a "unique" id for each element (AFAIK).

But the strange this is this little code of jQuery:

   var id = elem[ expando ];
   // Compute a unique ID for the element
   if ( !id ) {
       id = elem[expando] = ++uuid;
   }

this is part of the data function (~line