Node: nodeType property
The read-only nodeType
property of a Node
interface is an integer
that identifies what the node is. It distinguishes different kind of nodes from each other,
such as elements
, text
and comments
.
Value
An integer which specifies the type of the node. Possible values are:
Node.ELEMENT_NODE
(1
)Node.ATTRIBUTE_NODE
(2
)Node.TEXT_NODE
(3
)Node.CDATA_SECTION_NODE
(4
)-
A
CDATASection
, such as<!CDATA[[ … ]]>
Node.PROCESSING_INSTRUCTION_NODE
(7
)-
A
ProcessingInstruction
of an XML document, such as<?xml-stylesheet … ?>
. Node.COMMENT_NODE
(8
)-
A
Comment
node, such as<!-- … -->
. Node.DOCUMENT_NODE
(9
)-
A
Document
node. Node.DOCUMENT_TYPE_NODE
(10
)-
A
DocumentType
node, such as<!DOCTYPE html>
. Node.DOCUMENT_FRAGMENT_NODE
(11
)-
A
DocumentFragment
node.
The following constants have been deprecated and are not in use anymore: Node.ENTITY_REFERENCE_NODE
(5
),
Node.ENTITY_NODE
(6
), and Node.NOTATION_NODE
(12
).
Examples
Different types of nodes
js
document.nodeType === Node.DOCUMENT_NODE; // true
document.doctype.nodeType === Node.DOCUMENT_TYPE_NODE; // true
document.createDocumentFragment().nodeType === Node.DOCUMENT_FRAGMENT_NODE; // true
const p = document.createElement("p");
p.textContent = "Once upon a time…";
p.nodeType === Node.ELEMENT_NODE; // true
p.firstChild.nodeType === Node.TEXT_NODE; // true
Comments
This example checks if the first node inside the document element is a comment, and displays a message if not.
js
const node = document.documentElement.firstChild;
if (node.nodeType !== Node.COMMENT_NODE) {
console.warn("You should comment your code!");
}
Specifications
Specification |
---|
DOM Standard # ref-for-dom-node-nodetype① |
Browser compatibility
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