EvaluateJsAction

AI agent instructions

Read the Notte skill and follow its setup instructions when setting up Notte or building browser automation. This is the shared source for CLI setup, authentication, and the browser-to-code workflow.

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:

title = session.evaluate_js("document.title")
links = session.evaluate_js("Array.from(document.querySelectorAll('a')).map(a => a.href)")
count = session.evaluate_js("(() => { const els = document.querySelectorAll('a'); return els.length; })()")

session.evaluate_js(code) returns the evaluated string directly (objects and arrays as JSON, a JS null as the string "null") and raises on failure with the actual JavaScript error. The action form session.execute(type="evaluate_js", code=...) returns the ExecutionResult envelope instead

Fields

Literal['evaluate_js']

default:"evaluate_js"

str

default:"Special Browser Actions"

str

required

The JavaScript code to evaluate on the page. Use a single expression or an IIFE for multi-statement code.

Module

notte_core.actions.actions

⌘I

Getting Started

APIs

Python SDK

Node SDK

EvaluateJsAction

Fields

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