XPathEvaluator

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.

The XPathEvaluator interface allows to compile and evaluate XPath expressions.

Constructor

XPathEvaluator()

Creates a new XPathEvaluator object.

Instance methods

XPathEvaluator.createExpression()

Creates a parsed XPath expression with resolved namespaces.

XPathEvaluator.createNSResolver() Deprecated

Returns the input as-is.

XPathEvaluator.evaluate()

Evaluates an XPath expression string and returns a result of the specified type if possible.

Example

Count the number of <div> elements

The following example shows the use of the XPathEvaluator interface.

HTML

html
<div>XPath example</div>
<div>Number of &lt;div&gt; elements: <output></output></div>

JavaScript

js
const xpath = "//div";
const evaluator = new XPathEvaluator();
const expression = evaluator.createExpression(xpath);
const result = expression.evaluate(
  document,
  XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,
);
document.querySelector("output").textContent = result.snapshotLength;

Result

Specifications

Specification
DOM
# interface-xpathevaluator

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
XPathEvaluator
XPathEvaluator() constructor
createExpression
createNSResolver
Deprecated
evaluate

Legend

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Full support
Full support
Deprecated. Not for use in new websites.

See also