TreeWalker.lastChild() - Web APIs 编辑

The TreeWalker.lastChild() method moves the current Node to the last visible child of the current node, and returns the found child. It also moves the current node to this child. If no such child exists, returns null and the current node is not changed.

Syntax

node = treeWalker.lastChild();

Example

var treeWalker = document.createTreeWalker(
    document.body,
    NodeFilter.SHOW_ELEMENT,
    { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
    false
);
var node = treeWalker.lastChild(); // returns the last visible child of the root element

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The TreeWalker interface it belongs to.