TreeWalker: previousSibling() 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.previousSibling() method moves the current Node to its previous sibling, if any, and returns the found sibling. If there is no such node, it returns null and the current node is not changed.

Syntax

js
previousSibling()

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.previousSibling(); // returns null as there is no previous sibling

Specifications

Specification
DOM
# dom-treewalker-previoussibling

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
previousSibling

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also