nodeType property

int nodeType
final

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.

Other resources

Node.nodeType from MDN.

Implementation 

final int nodeType