TreeWalker: previousNode() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The TreeWalker.previousNode()
method moves the current
Node
to the previous visible node in the document order, and
returns the found node. If no such node
exists, or if it is before that the root node defined at the object
construction, it returns null
and the current node is not changed.
Syntax
js
previousNode()
Parameters
None.
Return value
A Node
object or null
.
Examples
js
const treeWalker = document.createTreeWalker(
document.body,
NodeFilter.SHOW_ELEMENT,
{
acceptNode(node) {
return NodeFilter.FILTER_ACCEPT;
},
},
false,
);
const node = treeWalker.previousNode(); // returns null as there is no parent
Specifications
Specification |
---|
DOM # dom-treewalker-previousnode |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
previousNode |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
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.
See also
- The
TreeWalker
interface it belongs to.