How to drag and drop gojs tree mutiple childs into diagram?

Hi,

How to drag and drop a multiple tree childs into go js diagram at a time?Can you please provide me a sample code?

Could you describe more precisely what you have set up already? How and where is your tree? Is it a Diagram? If so, have you implemented an “ExternalObjectsDropped” DiagramEvent listener on the target Diagram?

If not, have you examined the samples for drag-and-drop using either HTML5 or jQuery?
http://gojs.net/latest/samples/htmlDragDrop.html
http://gojs.net/latest/samples/jQueryDragDrop.html