# Introduction to ScriptCode

## What is ScriptCode

**ScriptCode** is a mechanism available on the platform **Eximee**, which enables the creation of business logic in the form of **JavaScript scripts** executed on the server side. Thanks to this solution, dynamic data processing, form validation, value formatting, and integration with external REST services are possible – **without the need to write backend code**.

In practice, this means that developers and process configurators can flexibly extend the functionality of the Eximee application while maintaining consistency with the data model and BPMN processes.

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## Key capabilities of ScriptCode

ScriptCode enables, among other things:

* **Processing input and output data** from forms, services, and BPMN processes.
* **Data validation** of the user using rules and business logic.
* **Formatting and presentation of values** in the user interface.
* **Integration with external services** via REST API (\[RestApi] – Calling external REST services).

Scripts are executed on the Eximee server, which guarantees security and data consistency throughout the entire processing cycle.

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## Use of ScriptCode in the Eximee platform

ScriptCode is used in various artifacts of the platform:

| Artifact                                   | Description                                                                            |
| ------------------------------------------ | -------------------------------------------------------------------------------------- |
| **Scripts (`scriptService`)**              | They are responsible for powering form components or processing input and output data. |
| **Script validators (`validationScript`)** | They implement data validation logic at the level of forms or processes.               |
| **Formatters**                             | They are responsible for how data is displayed and formatted in the user interface.    |
| **Script tasks (`scriptTask`)**            | Executed within BPMN processes, they allow custom business actions to be implemented.  |

***

## Advantages of using ScriptCode

* 🧠 **Flexibility** – easy changes to business logic without the need to modify backend code.
* ⚙️ **Integration** – the ability to communicate with external systems using REST API.
* 🧩 **Modularity** – different types of artifacts can work together within a single application.
* 🔒 **Security and control** – executing scripts on the server side minimizes the risk of client-side manipulation.


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