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

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 Standard # interface-xpathevaluator

Browser compatibility

BCD tables only load in the browser