This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The TreeWalker.expandEntityReferences read-only property returns a Boolean flag indicating whether or not the children of entity reference nodes are visible to the TreeWalker.

If this value is false, the children of entity reference nodes (as well as all of their descendants) are rejected. This takes precedence over the value of the  TreeWalker.whatToShow method and the associated filter.


expand = treeWalker.expandEntityReferences;


var treeWalker = document.createTreeWalker(
    { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
expand = treeWalker.expandEntityReferences;


Specification Status Comment
The definition of 'Treewalker' in that specification.
Living Standard Removed from the spec.
Document Object Model (DOM) Level 2 Traversal and Range Specification
The definition of 'TreeWalker.expandEntityReferences' in that specification.
Obsolete Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support 1.0 (Yes) 3.5 (1.9.1)
Removed in 21 (21)
9.0 9.0 3.0
Feature Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) 1.0 (1.9.1)
Removed in 21.0 (21)
(Yes) 9.0 3.0

See also

  • The interface this property belongs to: TreeWalker.

Document Tags and Contributors

 Contributors to this page: erikadoyle, teoli, afreen, Prachi_Dighe
 Last updated by: erikadoyle,