---
title: evaluate
framework: WebKit JS
role: symbol
role_heading: Instance Method
platforms: [Safari Desktop 3.0+, Safari Mobile 2.0+]
path: webkitjs/document/1629651-evaluate
---

# evaluate

## Declaration

```data
XPathResult evaluate(
    optional DOMString expression, 
    optional Node? contextNode, 
    optional XPathNSResolver? resolver, 
    optional unsigned short type, 
    optional XPathResult? inResult
);
```