TWebTreeView AbsoluteIndex and HasChildren

WEB TMS WEB Core
1

For dynamic creation I need the AbsoluteIndex of each node.
But the property is not available. What can I do?

I would also like to set the HasChildren property so that I can trigger an expanding event to dynamically load new nodes. Again, this is not available.

My own sample program in VCL works exactly like this. It would be nice if that worked in Web Core too.

2

We'll consider this for a future version of TWebTreeView

3

Is there another way to identify a specific node?
Or do I have to realize this via HTMLElement(ElementID)?