---
title: "FeatureGroup | Marker layout | JavaScript maps SDK"
description: "Documentation for Marker layout"
---

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

# Type Alias FeatureGroup

type FeatureGroup \= {  
    [features](#features): MapGeoJSONFeature\[\];  
    [groupKey](#groupkey): string | number | boolean;  
}

-   Defined in [markerlayout.ts:146](https://github.com/maptiler/maptiler-marker-layout/blob/c2121d13d89fb5e807a51caa949591fc11ba8a26/src/markerlayout.ts#L146)

##### Index

### Properties

[features](#features) [groupKey](#groupkey)

## Properties

### features[](#features)

features: MapGeoJSONFeature\[\]

-   Defined in [markerlayout.ts:148](https://github.com/maptiler/maptiler-marker-layout/blob/c2121d13d89fb5e807a51caa949591fc11ba8a26/src/markerlayout.ts#L148)

### groupKey[](#groupkey)

groupKey: string | number | boolean

-   Defined in [markerlayout.ts:147](https://github.com/maptiler/maptiler-marker-layout/blob/c2121d13d89fb5e807a51caa949591fc11ba8a26/src/markerlayout.ts#L147)