HTML DOM Level 2 Reference: TreeWalker

Traverses the specified document subtree.

Browser/User Agent Support

IE Mozilla Netscape Opera Safari Netscapte
no 1.0+ 7.0+ 9.0+ no no

IE	Mozilla	Netscape	Opera	Safari	Netscapte
no	1.0+	7.0+	9.0+	no	no

Constructors

Constructor IE Mozilla Netscape Opera Safari Netscapte
TreeWalker Constructor
Traverses the specified document subtree.
no 1.0+ 7.0+ 9.0+ no no

Constructor	IE	Mozilla	Netscape	Opera	Safari	Netscapte
TreeWalker Constructor Traverses the specified document subtree.	no	1.0+	7.0+	9.0+	no	no

Properties

Property IE Mozilla Netscape Opera Safari Netscapte
currentNode
Current node position of the TreeWalker.
no 1.0+ 7.0+ 9.0+ no no

expandEntityReferences
If true, indicates that the TreeWalker expands the entity references it encounters while traversing the document.
no 1.0+ 7.0+ 9.0+ no no

filter
Filter used to filter nodes for traversal.
no 1.0+ 7.0+ 9.0+ no no

root
Specifies the node that the TreeWalker begins traversal at.
no 1.0+ 7.0+ 9.0+ no no

whatToShow
Specifies which Document nodes the TreeWalker will use in its traversal.
no 1.0+ 7.0+ 9.0+ no no

Property	IE	Mozilla	Netscape	Opera	Safari	Netscapte
currentNode Current node position of the TreeWalker.	no	1.0+	7.0+	9.0+	no	no

expandEntityReferences If true, indicates that the TreeWalker expands the entity references it encounters while traversing the document.	no	1.0+	7.0+	9.0+	no	no

filter Filter used to filter nodes for traversal.	no	1.0+	7.0+	9.0+	no	no

root Specifies the node that the TreeWalker begins traversal at.	no	1.0+	7.0+	9.0+	no	no

whatToShow Specifies which Document nodes the TreeWalker will use in its traversal.	no	1.0+	7.0+	9.0+	no	no

Methods

Method IE Mozilla Netscape Opera Safari Netscapte
firstChild
Returns first child node of the current node.
no 1.0+ 7.0+ 9.0+ no no

lastChild
Returns the last child node of the current node.
no 1.0+ 7.0+ 9.0+ no no

nextNode
Returns the next node in the document subtree.
no 1.0+ 7.0+ 9.0+ no no

nextSibling
Returns the next sibling node of the current node.
no 1.0+ 7.0+ 9.0+ no no

parentNode
Returns the parent node of the current node.
no 1.0+ 7.0+ 9.0+ no no

previousNode
Returns the previous node in the document subtree.
no 1.0+ 7.0+ 9.0+ no no

previousSibling
Returns the previous sibling of the current node.
no 1.0+ 7.0+ 9.0+ no no

Method	IE	Mozilla	Netscape	Opera	Safari	Netscapte
firstChild Returns first child node of the current node.	no	1.0+	7.0+	9.0+	no	no

lastChild Returns the last child node of the current node.	no	1.0+	7.0+	9.0+	no	no

nextNode Returns the next node in the document subtree.	no	1.0+	7.0+	9.0+	no	no

nextSibling Returns the next sibling node of the current node.	no	1.0+	7.0+	9.0+	no	no

parentNode Returns the parent node of the current node.	no	1.0+	7.0+	9.0+	no	no

previousNode Returns the previous node in the document subtree.	no	1.0+	7.0+	9.0+	no	no

previousSibling Returns the previous sibling of the current node.	no	1.0+	7.0+	9.0+	no	no

References

NodeFilter | NodeIterator

Availability

HTML DOM Level 2 | W3C

Constructor Detail

TreeWalker TreeWalker()

Traverses the specified document subtree.

Visibility: internal

Property Detail

Node currentNode

Current node position of the TreeWalker.

Availability: HTML DOM Level 2 | W3C

Boolean expandEntityReferences - read only

If true, indicates that the TreeWalker expands the entity references it encounters while traversing the document.

Availability: HTML DOM Level 2 | W3C

NodeFilter filter - read only

Filter used to filter nodes for traversal.

Availability: HTML DOM Level 2 | W3C

Node root - read only

Specifies the node that the TreeWalker begins traversal at.

Availability: HTML DOM Level 2 | W3C

Number whatToShow - read only

Specifies which Document nodes the TreeWalker will use in its traversal.

Availability: HTML DOM Level 2 | W3C

Method Detail

firstChild() : static Node

Returns first child node of the current node.

For examples, see the quirksmode test page:

http://www.quirksmode.org/dom/tests/nodetree.html

Availability

HTML DOM Level 2 | W3C

lastChild() : static Node

Returns the last child node of the current node.

For examples, see the quirksmode test page:

http://www.quirksmode.org/dom/tests/nodetree.html

Availability

HTML DOM Level 2 | W3C

nextNode() : static Node

Returns the next node in the document subtree.

Availability: HTML DOM Level 2 | W3C

nextSibling() : static Node

Returns the next sibling node of the current node.

For examples, see the quirksmode test page:

http://www.quirksmode.org/dom/tests/nodetree.html

Availability

HTML DOM Level 2 | W3C

parentNode() : static Node

Returns the parent node of the current node.

For examples, see the quirksmode test page:

http://www.quirksmode.org/dom/tests/nodetree.html

Availability

HTML DOM Level 2 | W3C

previousNode() : static Node

Returns the previous node in the document subtree.

Availability: HTML DOM Level 2 | W3C

previousSibling() : static Node

Returns the previous sibling of the current node.

For examples, see the quirksmode test page:

http://www.quirksmode.org/dom/tests/nodetree.html

Availability

HTML DOM Level 2 | W3C

TreeWalker : Object

Browser/User Agent Support

Constructors

Properties

Methods

References

Availability

Constructor Detail

TreeWalker TreeWalker()

Property Detail

Node currentNode

Boolean expandEntityReferences - read only

NodeFilter filter - read only

Node root - read only

Number whatToShow - read only

Method Detail

firstChild() : static Node

lastChild() : static Node

nextNode() : static Node

nextSibling() : static Node

parentNode() : static Node

previousNode() : static Node

previousSibling() : static Node