XPathResult: invalidIteratorState property

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.

Note: This feature is available in Web Workers.

The read-only invalidIteratorState property of the XPathResult interface signifies that the iterator has become invalid. It is true if XPathResult.resultType is UNORDERED_NODE_ITERATOR_TYPE or ORDERED_NODE_ITERATOR_TYPE and the document has been modified since this result was returned.

Value

A boolean value indicating whether the iterator has become invalid.

Examples

The following example shows the use of the invalidIteratorState property.

HTML

html
<div>XPath example</div>
<p>Iterator state: <output></output></p>

JavaScript

js
const xpath = "//div";
const result = document.evaluate(
  xpath,
  document,
  null,
  XPathResult.ANY_TYPE,
  null,
);
// Invalidates the iterator state
document.querySelector("div").remove();
document.querySelector("output").textContent = result.invalidIteratorState
  ? "invalid"
  : "valid";

Result

Specifications

Specification
DOM
# dom-xpathresult-invaliditeratorstate

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
invalidIteratorState

Legend

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Full support
Full support