Places UI Kit: A ready-to-use library that provides room for customization and low-code development. Try it out, and share yourinput on your UI Kit experience.

Data Layer: Styling

  • This example demonstrates how to add custom shapes to a Google Map using the data layer and GeoJSON data.

  • It showcases styling these shapes by setting fill color and stroke width usingmap.data.setStyle().

  • The sample provides code snippets in TypeScript, JavaScript, CSS, and HTML to illustrate the implementation.

  • Users can interact with a live example through provided links to JSFiddle and Google Cloud Shell.

  • Instructions for cloning and running the sample locally using Git and Node.js are included.

This example uses thedata layer to add somecustom shapes to a map, and shows how to apply styles to those shapes

Read thedocumentation.

TypeScript

letmap:google.maps.Map;functioninitMap():void{map=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{zoom:4,center:{lat:-28,lng:137},});// Load GeoJSON.map.data.loadGeoJson("https://storage.googleapis.com/mapsdevsite/json/google.json");// Set the stroke width, and fill color for each polygonmap.data.setStyle({fillColor:"green",strokeWeight:1,});}declareglobal{interfaceWindow{initMap:()=>void;}}window.initMap=initMap;
Note: Read theguide on using TypeScript and Google Maps.

JavaScript

letmap;functioninitMap(){map=newgoogle.maps.Map(document.getElementById("map"),{zoom:4,center:{lat:-28,lng:137},});// Load GeoJSON.map.data.loadGeoJson("https://storage.googleapis.com/mapsdevsite/json/google.json",);// Set the stroke width, and fill color for each polygonmap.data.setStyle({fillColor:"green",strokeWeight:1,});}window.initMap=initMap;
Note: The JavaScript is compiled from the TypeScript snippet.

CSS

/* * Always set the map height explicitly to define the size of the div element * that contains the map. */#map{height:100%;}/* * Optional: Makes the sample page fill the window. */html,body{height:100%;margin:0;padding:0;}

HTML

<html>  <head>    <title>Data Layer: Styling</title>    <link rel="stylesheet" type="text/css" href="./style.css" />    <script type="module" src="./index.js"></script>  </head>  <body>    <div></div>    <!--       The `defer` attribute causes the script to execute after the full HTML      document has been parsed. For non-blocking uses, avoiding race conditions,      and consistent behavior across browsers, consider loading using Promises. See      https://developers.google.com/maps/documentation/javascript/load-maps-js-api      for more information.      -->    <script      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"      defer    ></script>  </body></html>

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow theseinstructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

gitclone-bsample-layer-data-stylehttps://github.com/googlemaps/js-samples.gitcdjs-samplesnpminpmstart

Other samples can be tried by switching to any branch beginning withsample-SAMPLE_NAME.

gitcheckoutsample-SAMPLE_NAMEnpminpmstart

Except as otherwise noted, the content of this page is licensed under theCreative Commons Attribution 4.0 License, and code samples are licensed under theApache 2.0 License. For details, see theGoogle Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-11-21 UTC.