Get hash string / guid from a jQuery object

Question

I would like to have a hashtable of jQuery objects and needs some kind of unique identifier for them.

The DOM representation is just

<tr>
    ...
</tr>

And I would like to add my jQuery <tr> objects to a hashtable

hash[$(trObject).guid()] = $(trObject);

How can I uniquely identify a particular jQuery object without extending jQuery?

I know I could write a method

(function() {
    var guid = 0;
    $.fn.guid = function() {
         var node = this[0];
         if (node.guid === undefined) {
              node.guid = guid++;
         }
         return node.guid;
    };
}());

To do this for me, but I would prefer to know if there is some kind of native standard way to get a string/int hashcode from a jQuery object.

P.S. I don't expect to hit the 32bit integer limit.

Answer 1

No native standard way which I am aware of but there are jquery plugins for this
eg. http://plugins.jquery.com/project/GUID_Helper

UPDATE:
The guid number used by jquery is stored in jquery.guid
Moreover, jquery is not using any native standard method for this. It is also following an approach similar to yours.