The read-only snapshotLength property of the XPathResult interface represents the number of nodes in the result snapshot. 
Note: This feature is available in Web Workers
 The read-only snapshotLength property of the XPathResult interface represents the number of nodes in the result snapshot. 
Note: This feature is available in Web Workers
An integer value representing the number of nodes in the result snapshot.
 In case XPathResult.resultType is not UNORDERED_NODE_SNAPSHOT_TYPE or ORDERED_NODE_SNAPSHOT_TYPE, an XPathException of type TYPE_ERR is thrown. 
The following example shows the use of the snapshotLength property.
html
<div>XPath example</div> <div>Number of matched nodes: <output></output></div>
js
const xpath = "//div"; const result = document.evaluate( xpath, document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null, ); document.querySelector("output").textContent = result.snapshotLength;
| Specification | 
|---|
| DOM Standard  # dom-xpathresult-snapshotlength  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
snapshotLength | 
1 | 12 | 1 | No | ≤12.1 | 3 | 4.4 | 18 | 4 | ≤12.1 | 1 | 1.0 | 
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    https://developer.mozilla.org/en-US/docs/Web/API/XPathResult/snapshotLength