Puts all Text nodes in the full depth of the sub-tree underneath this
Node, including attribute nodes, into a "normal" form where only structure
(e.g., elements, comments, processing instructions, CDATA sections, and entity
references) separates Text nodes, i.e., there are neither adjacent Text
nodes nor empty Text nodes. This can be used to ensure that the DOM view
of a document is the same as if it were saved and re-loaded.
Puts all Text nodes in the full depth of the sub-tree underneath this Node, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates Text nodes, i.e., there are neither adjacent Text nodes nor empty Text nodes. This can be used to ensure that the DOM view of a document is the same as if it were saved and re-loaded.