---
title: "ExpressionType | 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 ExpressionType

ExpressionType:  
    | "data-driven"  
    | "cross-faded"  
    | "cross-faded-data-driven"  
    | "color-ramp"  
    | "data-constant"  
    | "constant"