Web/API/TreeWalker/root

The TreeWalker.root read-only property returns the node that is the root of what the TreeWalker traverses.

Syntax

root = TreeWalker.root;

Example

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

Specifications

Specification	Status	Comment
DOMThe definition of 'TreeWalker.root' in that specification.	Living Standard	No change from Document Object Model (DOM) Level 2 Traversal and Range Specification
Document Object Model (DOM) Level 2 Traversal and Range SpecificationThe definition of 'TreeWalker.root' in that specification.	Obsolete	Initial definition.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
root	Chrome Full support 1	Edge Full support 12	Firefox Full support 4	IE Full support 9	Opera Full support 9	Safari Full support 3	WebView Android Full support 3	Chrome Android Full support Yes	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 3	Samsung Internet Android Full support Yes

Legend

Full support  

Full support

See also

• The TreeWalker interface.

TreeWalker.root by Mozilla Contributors is licensed under CC-BY-SA 2.5.