---
title: "FunctionStringCallback | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs-qmgv.pages.dev/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Interface FunctionStringCallback

-   FunctionStringCallback(data: string): void[](#functionstringcallback)
    
    #### Parameters
    
    -   data: string
    
    #### Returns void