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

> 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 GeoJSONFeatureId

GeoJSONFeatureId: number | string

A way to identify a feature, either by string or by number