Splitting child node from XML file into their own XML files

Question

I have an XML file (on the left) and I want to create multiple files (on the right):

                                  file1:
    

        

Answer 1

Nodes in the DOM have a concept of their owning document (hence your WRONG_DOCUMENT_ERR).

So you need to import the node from the original DOM to your new one. See Document.importNode()