// In the following example, markers appear when the user clicks on the map.// Each marker is labeled with a single alphabetical character.constlabels="ABCDEFGHIJKLMNOPQRSTUVWXYZ";letlabelIndex=0;functioninitMap():void{constbangalore={lat:12.97,lng:77.59};constmap=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{zoom:12,center:bangalore,});// This event listener calls addMarker() when the map is clicked.google.maps.event.addListener(map,"click",(event)=>{addMarker(event.latLng,map);});// Add a marker at the center of the map.addMarker(bangalore,map);}// Adds a marker to the map.functionaddMarker(location:google.maps.LatLngLiteral,map:google.maps.Map){// Add the marker at the clicked location, and add the next-available label// from the array of alphabetical characters.newgoogle.maps.Marker({position:location,label:labels[labelIndex++%labels.length],map:map,});}declareglobal{interfaceWindow{initMap:()=>void;}}window.initMap=initMap;
// In the following example, markers appear when the user clicks on the map.// Each marker is labeled with a single alphabetical character.constlabels="ABCDEFGHIJKLMNOPQRSTUVWXYZ";letlabelIndex=0;functioninitMap(){constbangalore={lat:12.97,lng:77.59};constmap=newgoogle.maps.Map(document.getElementById("map"),{zoom:12,center:bangalore,});// This event listener calls addMarker() when the map is clicked.google.maps.event.addListener(map,"click",(event)=>{addMarker(event.latLng,map);});// Add a marker at the center of the map.addMarker(bangalore,map);}// Adds a marker to the map.functionaddMarker(location,map){// Add the marker at the clicked location, and add the next-available label// from the array of alphabetical characters.newgoogle.maps.Marker({position:location,label:labels[labelIndex++%labels.length],map:map,});}window.initMap=initMap;
/** 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>
<head>
<title>Marker Labels</title>
<link rel="stylesheet" type="text/css" href="./style.css" />
<script type="module" src="./index.js"></script>
</head>
<body>
<div id="map"></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>
Git and Node.js are required to run this sample locally. Follow theseinstructionsto install Node.js and NPM. The following commands clone, install dependencies and start the sample application.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis example demonstrates how to add markers with alphabetical labels to a Google Map.\u003c/p\u003e\n"],["\u003cp\u003eUsers can click on the map to create new markers, each labeled with a unique letter.\u003c/p\u003e\n"],["\u003cp\u003eThe sample code is provided in both JavaScript and TypeScript, along with HTML and CSS for styling.\u003c/p\u003e\n"],["\u003cp\u003eThe legacy \u003ccode\u003egoogle.maps.Marker\u003c/code\u003e is deprecated, and migration to \u003ccode\u003egoogle.maps.marker.AdvancedMarkerElement\u003c/code\u003e is encouraged for future compatibility.\u003c/p\u003e\n"]]],[],null,["| As of February 21st, 2024 (v3.56), google.maps.Marker is deprecated. We encourage you to\n| transition to the new `google.maps.marker.AdvancedMarkerElement` class. Advanced\n| markers provide substantial improvements over the legacy `google.maps.Marker` class.\n| The minimum version of the Maps JavaScript API with `google.maps.marker.AdvancedMarkerElement`\n| is 3.53.2. At this time, google.maps.Marker is not scheduled to be discontinued.\n|\n| [Learn more](/maps/documentation/javascript/advanced-markers/migration)\n\nThis example creates a map where each click by the user creates a marker that's\nlabeled with a single alphabetic character.\n\nRead the [documentation](/maps/documentation/javascript/markers#marker_labels). \n\nTypeScript \n\n```typescript\n// In the following example, markers appear when the user clicks on the map.\n// Each marker is labeled with a single alphabetical character.\nconst labels = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ\";\nlet labelIndex = 0;\n\nfunction initMap(): void {\n const bangalore = { lat: 12.97, lng: 77.59 };\n const map = new google.maps.Map(\n document.getElementById(\"map\") as HTMLElement,\n {\n zoom: 12,\n center: bangalore,\n }\n );\n\n // This event listener calls addMarker() when the map is clicked.\n google.maps.event.addListener(map, \"click\", (event) =\u003e {\n addMarker(event.latLng, map);\n });\n\n // Add a marker at the center of the map.\n addMarker(bangalore, map);\n}\n\n// Adds a marker to the map.\nfunction addMarker(location: google.maps.LatLngLiteral, map: google.maps.Map) {\n // Add the marker at the clicked location, and add the next-available label\n // from the array of alphabetical characters.\n new google.maps.Marker({\n position: location,\n label: labels[labelIndex++ % labels.length],\n map: map,\n });\n}\n\ndeclare global {\n interface Window {\n initMap: () =\u003e void;\n }\n}\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/samples/marker-labels/index.ts#L8-L48\n```\n| **Note:** Read the [guide](/maps/documentation/javascript/using-typescript) on using TypeScript and Google Maps.\n\nJavaScript \n\n```javascript\n// In the following example, markers appear when the user clicks on the map.\n// Each marker is labeled with a single alphabetical character.\nconst labels = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ\";\nlet labelIndex = 0;\n\nfunction initMap() {\n const bangalore = { lat: 12.97, lng: 77.59 };\n const map = new google.maps.Map(document.getElementById(\"map\"), {\n zoom: 12,\n center: bangalore,\n });\n\n // This event listener calls addMarker() when the map is clicked.\n google.maps.event.addListener(map, \"click\", (event) =\u003e {\n addMarker(event.latLng, map);\n });\n // Add a marker at the center of the map.\n addMarker(bangalore, map);\n}\n\n// Adds a marker to the map.\nfunction addMarker(location, map) {\n // Add the marker at the clicked location, and add the next-available label\n // from the array of alphabetical characters.\n new google.maps.Marker({\n position: location,\n label: labels[labelIndex++ % labels.length],\n map: map,\n });\n}\n\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/marker-labels/docs/index.js#L7-L38\n```\n| **Note:** The JavaScript is compiled from the TypeScript snippet.\n\nCSS \n\n```css\n/* \n * Always set the map height explicitly to define the size of the div element\n * that contains the map. \n */\n#map {\n height: 100%;\n}\n\n/* \n * Optional: Makes the sample page fill the window. \n */\nhtml,\nbody {\n height: 100%;\n margin: 0;\n padding: 0;\n}\nhttps://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/marker-labels/docs/style.css#L7-L24\n```\n\nHTML \n\n```html\n\u003chtml\u003e\n \u003chead\u003e\n \u003ctitle\u003eMarker Labels\u003c/title\u003e\n\n \u003clink rel=\"stylesheet\" type=\"text/css\" href=\"./style.css\" /\u003e\n \u003cscript type=\"module\" src=\"./index.js\"\u003e\u003c/script\u003e\n \u003c/head\u003e\n \u003cbody\u003e\n \u003cdiv id=\"map\"\u003e\u003c/div\u003e\n\n \u003c!-- \n The `defer` attribute causes the script to execute after the full HTML\n document has been parsed. For non-blocking uses, avoiding race conditions,\n and consistent behavior across browsers, consider loading using Promises. See\n https://developers.google.com/maps/documentation/javascript/load-maps-js-api\n for more information.\n --\u003e\n \u003cscript\n src=\"https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly\"\n defer\n \u003e\u003c/script\u003e\n \u003c/body\u003e\n\u003c/html\u003ehttps://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/marker-labels/docs/index.html#L8-L30\n```\n\nTry Sample \n[JSFiddle.net](https://jsfiddle.net/gh/get/library/pure/googlemaps/js-samples/tree/master/dist/samples/marker-labels/jsfiddle) [Google Cloud Shell](https://ssh.cloud.google.com/cloudshell/editor?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglemaps%2Fjs-samples&cloudshell_git_branch=sample-marker-labels&cloudshell_tutorial=cloud_shell_instructions.md&cloudshell_workspace=.)\n\nClone Sample\n\n\nGit and Node.js are required to run this sample locally. Follow these [instructions](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm) to install Node.js and NPM. The following commands clone, install dependencies and start the sample application. \n\n git clone -b sample-marker-labels https://github.com/googlemaps/js-samples.git\n cd js-samples\n npm i\n npm start\n\n\nOther samples can be tried by switching to any branch beginning with `sample-`\u003cvar translate=\"no\"\u003eSAMPLE_NAME\u003c/var\u003e. \n\n git checkout sample-\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nx\"\u003eSAMPLE_NAME\u003c/span\u003e\u003c/var\u003e\n npm i\n npm start"]]
