Baseline Widely available
The read-only singleNodeValue property of the XPathResult interface returns a Node value or null in case no node was matched of a result with XPathResult.resultType being ANY_UNORDERED_NODE_TYPE or FIRST_ORDERED_NODE_TYPE.
The return value is the Node value of the XPathResult returned by Document.evaluate().
In case XPathResult.resultType is not ANY_UNORDERED_NODE_TYPE or FIRST_ORDERED_NODE_TYPE, a DOMException of type TYPE_ERR is thrown.
The following example shows the use of the singleNodeValue property.
<div>XPath example</div>
<div>
Tag name of the element having the text content 'XPath example':
<output></output>
</div>
const xpath = "//*[text()='XPath example']";
const result = document.evaluate(
xpath,
document,
null,
XPathResult.FIRST_ORDERED_NODE_TYPE,
null,
);
document.querySelector("output").textContent = result.singleNodeValue.localName;
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