> For the complete documentation index, see [llms.txt](https://docs.incari.com/incari-studio/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.incari.com/incari-studio/2021.4/toolbox/events/web/on-javascript-callback.md).

# On Javascript Callback

## Overview

![The On Javascript Callback Node.](/files/tm8WEEEta1f2AdPQTD6b)

**On Javascript Callback** is an **Event Listener** **Node** used for executing a **Logic Branch** when a Javascript function is called. This function needs to be defined in the **Web Sprite** that is given as **Object** **Attribute**.

## Attributes

### Object

| Attribute | Type         | Description                                                    |
| --------- | ------------ | -------------------------------------------------------------- |
| `Object`  | **ObjectID** | **Web Sprite** **Object** that contains the callback function. |

### Function

| Attribute          | Type       | Description                                               |
| ------------------ | ---------- | --------------------------------------------------------- |
| `JS Function Name` | **String** | The name of the function that will trigger the **Logic**. |

### Outputs

#### Data Types

| Attribute        | Type          | Description                                                         |
| ---------------- | ------------- | ------------------------------------------------------------------- |
| `Data Types [n]` | **Drop-down** | Label and **Data Type** of the corresponding **Output** **Socket**. |

## Outputs

| Output             | Type                                         | Description                                                                                                                            |
| ------------------ | -------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| *Pulse Output* (►) | **Pulse**                                    | A standard **Output Pulse**, to move onto the next **Node** along the **Logic Branch**, once this **Node** has finished its execution. |
| `Parameter`        | *Defined in the `Data Type`* ***Attribute*** | Parameter received by the callback function.                                                                                           |

## See Also

* [**Call Javascript Function**](/incari-studio/2021.4/toolbox/web/call-javascript-function.md)