---
title: "ExpressionParameters | 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 ExpressionParameters

ExpressionParameters: (  
    | "zoom"  
    | "feature"  
    | "feature-state"  
    | "heatmap-density"  
    | "elevation"  
    | "line-progress"  
    | "global-state"  
)\[\]