NodeIterator

The NodeIterator interface represents an iterator to traverse nodes of a DOM subtree in document order.

A NodeIterator can be created using the {{domxref("Document.createNodeIterator()")}} method, as follows:

const nodeIterator = document.createNodeIterator(root, whatToShow, filter);

Instance properties

This interface doesn't inherit any property.

{{domxref("NodeIterator.root")}} {{ReadOnlyInline}}
- : Returns a {{domxref("Node")}} representing the root node, as specified when the NodeIterator was created.
{{domxref("NodeIterator.whatToShow")}} {{ReadOnlyInline}}
- : Returns an unsigned long bitmask that describes the types of {{domxref("Node")}} to be matched. Non-matching nodes are skipped, but relevant child nodes may be included.
{{domxref("NodeIterator.filter")}} {{ReadOnlyInline}}
- : Returns a NodeFilter used to select the relevant nodes.
{{domxref("NodeIterator.referenceNode")}} {{ReadOnlyInline}}
- : Returns the {{domxref("Node")}} to which the iterator is anchored.
{{domxref("NodeIterator.pointerBeforeReferenceNode")}} {{ReadOnlyInline}}
- : Returns a boolean indicating whether or not the NodeIterator is anchored before the {{domxref("NodeIterator.referenceNode")}}. If false, it indicates that the iterator is anchored after the reference node.

This interface doesn't inherit any method.

{{domxref("NodeIterator.detach()")}} {{deprecated_inline}}
- : This is a legacy method, and no longer has any effect. Previously it served to mark a NodeIterator as disposed, so it could be reclaimed by garbage collection.
{{domxref("NodeIterator.previousNode()")}}
- : Returns the previous {{domxref("Node")}} in the document, or null if there are none.
{{domxref("NodeIterator.nextNode()")}}
- : Returns the next {{domxref("Node")}} in the document, or null if there are none.