---
title: "run js function · RUAL Documentation"
description: "RUAL state ui block."
canonical: https://docs.rual.nl/block-types/state ui/state_custom_function_execution
language: en
---

# run js function

This block is part of the [`state ui`](https://docs.rual.nl/block-types/state%20ui) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

- flow `flow`

- context `value` Default `window`

- function required `value`

- argument 1 `value`

- flow `flow`

A typical wiring for [run js function](https://docs.rual.nl/block-types/state%20ui/state_custom_function_execution): a [function trigger](https://docs.rual.nl/block-types/globals/trigger_custom_function) starts the flow; [value](https://docs.rual.nl/block-types/value/value_default) feeds the `name` pin; the `flow` out pin feeds [debug](https://docs.rual.nl/block-types/state%20ui/state_debug).

![Studio canvas example for the run js function block: typical wiring for run js function.](https://docs.rual.nl/canvas-examples/state_custom_function_execution.png)

### Version history

Introduced in [`v10.4.28`](https://docs.rual.nl/core-versions/100428).