NodeIterator.pointerBeforeReferenceNode - Web APIs 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The NodeIterator.pointerBeforeReferenceNode read-only property returns a Boolean flag that indicates whether the NodeFilter is anchored before (if this value is true) or after (if this value is false) the anchor node indicated by the NodeIterator.referenceNode property.

Syntax

flag = nodeIterator.pointerBeforeReferenceNode;

Example

var nodeIterator = document.createNodeIterator(
    document.body,
    NodeFilter.SHOW_ELEMENT,
    { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
    false
);
flag = nodeIterator.pointerBeforeReferenceNode;

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The interface it belongs to: NodeIterator