Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

The node at which the TreeWalker is currently positioned.

Alterations to the DOM tree may cause the current node to no longer be accepted by the TreeWalker's associated filter. currentNode may also be explicitly set to any node, whether or not it is within the subtree specified by the root node or would be accepted by the filter and whatToShow flags. Further traversal occurs relative to currentNode even if it is not part of the current view, by applying the filters in the requested direction; if no traversal is possible, currentNode is not changed.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

The value of this flag determines whether the children of entity reference nodes are visible to the TreeWalker. If false, they and their descendants will be rejected. Note that this rejection takes precedence over whatToShow and the filter, if any.

To produce a view of the document that has entity references expanded and does not expose the entity reference node itself, use the whatToShow flags to hide the entity reference node and set expandEntityReferences to true when creating the TreeWalker. To produce a view of the document that has entity reference nodes but no entity expansion, use the whatToShow flags to show the entity reference node and set expandEntityReferences to false.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

The filter used to screen nodes.

Note: When creating the TreeWalker, the filter object is passed in as the third parameter, and the object method acceptNode(node) is called on every single node to determine whether or not to accept it. This function should return the constant NodeFilter.FILTER_ACCEPT for cases when the node should be accepted and NodeFilter.FILTER_REJECT for cases when the node should be rejected.

See also

         var treeWalker = document.createTreeWalker(
             document.body,
             NodeFilter.SHOW_ELEMENT,
             { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
             false
             );
         nodeFilter = treeWalker.filter; // document.body in this case

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

The root node of the TreeWalker, as specified when it was created.

See also

         var treeWalker = document.createTreeWalker(
             document.body,
             NodeFilter.SHOW_ELEMENT,
             { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
             false
             );
         root = treeWalker.root; // document.body in this case

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

This attribute determines which node types are presented via the TreeWalker. The available set of constants is defined in the NodeFilter interface. Nodes not accepted by whatToShow will be skipped, but their children may still be considered. Note that this skip takes precedence over the filter, if any.

See also

         var treeWalker = document.createTreeWalker(
             document.body,
             NodeFilter.SHOW_ELEMENT + NodeFilter.SHOW_COMMENT + NodeFilter.SHOW_TEXT,
             { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
             false
             );
         if((treeWalker.whatToShow == NodeFilter.SHOW_ALL) || 
             (treeWalker.whatToShow % (NodeFilter.SHOW_COMMENT)) >= NodeFilter.SHOW_COMMENT) {
             // treeWalker will show comments
         }

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

Moves the TreeWalker to the first visible child of the current node, and returns the new node. If the current node has no visible children, returns null, and retains the current node.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

Moves the TreeWalker to the last visible child of the current node, and returns the new node. If the current node has no visible children, returns null, and retains the current node.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

Moves the TreeWalker to the next visible node in document order relative to the current node, and returns the new node. If the current node has no next node, or if the search for nextNode attempts to step upward from the TreeWalker's root node, returns null, and retains the current node.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

Moves the TreeWalker to the next sibling of the current node, and returns the new node. If the current node has no visible next sibling, returns null, and retains the current node.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

Moves to and returns the closest visible ancestor node of the current node. If the search for parentNode attempts to step upward from the TreeWalker's root node, or if it fails to find a visible ancestor node, this method retains the current position and returns null.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

Moves the TreeWalker to the previous visible node in document order relative to the current node, and returns the new node. If the current node has no previous node, or if the search for previousNode attempts to step upward from the TreeWalker's root node, returns null, and retains the current node.

See also

Product Versions :

5.5 6.0 7.0 8.0 as IE7 8.0 as IE8 2.0 3.0 3.5 3.0 3.1 4.0b 1.0 2.0 9.62 10.0a

Moves the TreeWalker to the previous sibling of the current node, and returns the new node. If the current node has no visible previous sibling, returns null, and retains the current node.

See also