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NodeIterator: filter property

The NodeIterator.filter read-only property returns a NodeFilter object, that is an object which implements an acceptNode(node) method, used to screen nodes.

When creating the NodeIterator, the filter object is passed in as the third parameter, and the object method acceptNode(node) is called on every single node to determine whether or not to accept it. This function should return the constant NodeFilter.FILTER_ACCEPT for cases when the node should be accepted and NodeFilter.FILTER_REJECT for cases when the node should be rejected.

Value

A NodeFilter object.

Examples

js

const nodeIterator = document.createNodeIterator(
  document.body,
  NodeFilter.SHOW_ELEMENT,
  {
    acceptNode(node) {
      return NodeFilter.FILTER_ACCEPT;
    },
  },
);
nodeFilter = nodeIterator.filter;

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
filter 1 12 3.5 9 9 3 4.4 18 4 10.1 3 1.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/NodeIterator/filter