TreeWalker

The TreeWalker.currentNode property represents the Node which the TreeWalker is currently pointing at.

The TreeWalker.filter read-only property returns the NodeFilter associated with the TreeWalker.

The TreeWalker.root read-only property returns the root Node that the TreeWalker traverses.

The TreeWalker.whatToShow read-only property returns a bitmask that indicates the types of nodes to show.

The TreeWalker.firstChild() method moves the current Node to the first visible child of the current node, and returns the found child.

The TreeWalker.lastChild() method moves the current Node to the last visible child of the current node, and returns the found child.

The TreeWalker.nextNode() method moves the current Node to the next visible node in the document order, and returns the found node.

The TreeWalker.nextSibling() method moves the current Node to its next sibling, if any, and returns the found sibling.

The TreeWalker.parentNode() method moves the current Node to the first visible ancestor node in the document order, and returns the found node.

The TreeWalker.previousNode() method moves the current Node to the previous visible node in the document order, and returns the found node.

The TreeWalker.previousSibling() method moves the current Node to its previous sibling, if any, and returns the found sibling.