The type of node.
This value is one of:
ATTRIBUTE_NODE
if this node is an attribute.CDATA_SECTION_NODE
if this node is a CDataSection
.COMMENT_NODE
if this node is a Comment
.DOCUMENT_FRAGMENT_NODE
if this node is a DocumentFragment
.DOCUMENT_NODE
if this node is a Document
.DOCUMENT_TYPE_NODE
if this node is a DocumentType
node.ELEMENT_NODE
if this node is an Element
.ENTITY_NODE
if this node is an entity.ENTITY_REFERENCE_NODE
if this node is an entity reference.NOTATION_NODE
if this node is a notation.PROCESSING_INSTRUCTION_NODE
if this node is a ProcessingInstruction
.TEXT_NODE
if this node is a Text
node.Node.nodeType from MDN.