Dropping Html element on Node

From this sample https://gojs.net/latest/samples/dragOutFields.html, instead of dropping gojs fields in html. Can we drag and drop html element on top of node and that element value will be append to node fields.

I don’t know if we have such a sample, but these two samples demonstrate dragging from HTML to Diagram:
http://gojs.net/latest/samples/htmlDragDrop.html
http://gojs.net/latest/samples/jQueryDragDrop.html

I assume you already know about:
http://gojs.net/latest/samples/dragDropFields.html