> ## Documentation Index
> Fetch the complete documentation index at: https://notte-experiment-visibility-md-links.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# EvaluateJsAction

> Evaluate JavaScript code on the current page and return the result

Useful for extracting structured data from a page without LLM processing.

The code is evaluated as a JavaScript expression. For simple cases use a single expression.
For multi-statement logic, use an IIFE (Immediately Invoked Function Expression):
`(() => { /* statements */ return result; })()`

You will not get any output from console.log(), so simply use the return value if your goal is to gather information

**Example:**

```python theme={null}
session.execute(type="evaluate_js", code="document.title")
session.execute(type="evaluate_js", code="Array.from(document.querySelectorAll('a')).map(a => a.href)")
session.execute(type="evaluate_js", code="(() => { const els = document.querySelectorAll('a'); return els.length; })()")
```

## Fields

<ParamField path="type" type="Literal['evaluate_js']" default="evaluate_js" />

<ParamField path="category" type="str" default="Special Browser Actions" />

<ParamField path="description" type="str" default="Evaluate JavaScript code on the current page and return the result. For simple cases, provide a single expression (e.g. `document.title`). For multi-statement code, wrap in an IIFE: `(() => { ...; return result; })()`" />

<ParamField path="code" type="str" required>
  The JavaScript code to evaluate on the page. Use a single expression or an IIFE for multi-statement code.
</ParamField>

## Module

`notte_core.actions.actions`