TreeWalker.previousSibling()

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, return null and the current node is not changed.

Syntax

node = treeWalker.previousSibling();

Example

var treeWalker = document.createTreeWalker(
    document.body,
    NodeFilter.SHOW_ELEMENT,
    { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
    false
);
var node = treeWalker.previousSibling(); // returns null as there is no previous sibling

Specifications

Specification
DOM Standard
# dom-treewalker-previoussibling

Browser compatibility

BCD tables only load in the browser

See also