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Geocoding Service

  • This example demonstrates geocoding and reverse geocoding on a map using the Google Maps JavaScript API.

  • Users can enter an address in a text field to geocode or click on the map for reverse geocoding.

  • The map will pan to the geocoded location and display a marker.

  • The sample provides code in both JavaScript and TypeScript.

This example creates a map along with a text input field and a button. When youclick the "geocode" button, the sample sends a geocoding request, then pans themap to the geocoded location.

Read thedocumentation.

TypeScript

letmap:google.maps.Map;letmarker:google.maps.Marker;letgeocoder:google.maps.Geocoder;letresponseDiv:HTMLDivElement;letresponse:HTMLPreElement;functioninitMap():void{map=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{zoom:8,center:{lat:-34.397,lng:150.644},mapTypeControl:false,});geocoder=newgoogle.maps.Geocoder();constinputText=document.createElement("input");inputText.type="text";inputText.placeholder="Enter a location";constsubmitButton=document.createElement("input");submitButton.type="button";submitButton.value="Geocode";submitButton.classList.add("button","button-primary");constclearButton=document.createElement("input");clearButton.type="button";clearButton.value="Clear";clearButton.classList.add("button","button-secondary");response=document.createElement("pre");response.id="response";response.innerText="";responseDiv=document.createElement("div");responseDiv.id="response-container";responseDiv.appendChild(response);constinstructionsElement=document.createElement("p");instructionsElement.id="instructions";instructionsElement.innerHTML="<strong>Instructions</strong>: Enter an address in the textbox to geocode or click on the map to reverse geocode.";map.controls[google.maps.ControlPosition.TOP_LEFT].push(inputText);map.controls[google.maps.ControlPosition.TOP_LEFT].push(submitButton);map.controls[google.maps.ControlPosition.TOP_LEFT].push(clearButton);map.controls[google.maps.ControlPosition.LEFT_TOP].push(instructionsElement);map.controls[google.maps.ControlPosition.LEFT_TOP].push(responseDiv);marker=newgoogle.maps.Marker({map,});map.addListener("click",(e:google.maps.MapMouseEvent)=>{geocode({location:e.latLng});});submitButton.addEventListener("click",()=>geocode({address:inputText.value}));clearButton.addEventListener("click",()=>{clear();});clear();}functionclear(){marker.setMap(null);responseDiv.style.display="none";}functiongeocode(request:google.maps.GeocoderRequest):void{clear();geocoder.geocode(request).then((result)=>{const{results}=result;map.setCenter(results[0].geometry.location);marker.setPosition(results[0].geometry.location);marker.setMap(map);responseDiv.style.display="block";response.innerText=JSON.stringify(result,null,2);returnresults;}).catch((e)=>{alert("Geocode was not successful for the following reason: "+e);});}declareglobal{interfaceWindow{initMap:()=>void;}}window.initMap=initMap;
Note: Read theguide on using TypeScript and Google Maps.

JavaScript

letmap;letmarker;letgeocoder;letresponseDiv;letresponse;functioninitMap(){map=newgoogle.maps.Map(document.getElementById("map"),{zoom:8,center:{lat:-34.397,lng:150.644},mapTypeControl:false,});geocoder=newgoogle.maps.Geocoder();constinputText=document.createElement("input");inputText.type="text";inputText.placeholder="Enter a location";constsubmitButton=document.createElement("input");submitButton.type="button";submitButton.value="Geocode";submitButton.classList.add("button","button-primary");constclearButton=document.createElement("input");clearButton.type="button";clearButton.value="Clear";clearButton.classList.add("button","button-secondary");response=document.createElement("pre");response.id="response";response.innerText="";responseDiv=document.createElement("div");responseDiv.id="response-container";responseDiv.appendChild(response);constinstructionsElement=document.createElement("p");instructionsElement.id="instructions";instructionsElement.innerHTML="<strong>Instructions</strong>: Enter an address in the textbox to geocode or click on the map to reverse geocode.";map.controls[google.maps.ControlPosition.TOP_LEFT].push(inputText);map.controls[google.maps.ControlPosition.TOP_LEFT].push(submitButton);map.controls[google.maps.ControlPosition.TOP_LEFT].push(clearButton);map.controls[google.maps.ControlPosition.LEFT_TOP].push(instructionsElement);map.controls[google.maps.ControlPosition.LEFT_TOP].push(responseDiv);marker=newgoogle.maps.Marker({map,});map.addListener("click",(e)=>{geocode({location:e.latLng});});submitButton.addEventListener("click",()=>geocode({address:inputText.value}),);clearButton.addEventListener("click",()=>{clear();});clear();}functionclear(){marker.setMap(null);responseDiv.style.display="none";}functiongeocode(request){clear();geocoder.geocode(request).then((result)=>{const{results}=result;map.setCenter(results[0].geometry.location);marker.setPosition(results[0].geometry.location);marker.setMap(map);responseDiv.style.display="block";response.innerText=JSON.stringify(result,null,2);returnresults;}).catch((e)=>{alert("Geocode was not successful for the following reason: "+e);});}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;}input[type=text]{background-color:#fff;border:0;border-radius:2px;box-shadow:01px4px-1pxrgba(0,0,0,0.3);margin:10px;padding:00.5em;font:40018pxRoboto,Arial,sans-serif;overflow:hidden;line-height:40px;margin-right:0;min-width:25%;}input[type=button]{background-color:#fff;border:0;border-radius:2px;box-shadow:01px4px-1pxrgba(0,0,0,0.3);margin:10px;padding:00.5em;font:40018pxRoboto,Arial,sans-serif;overflow:hidden;height:40px;cursor:pointer;margin-left:5px;}input[type=button]:hover{background:rgb(235,235,235);}input[type=button].button-primary{background-color:#1a73e8;color:white;}input[type=button].button-primary:hover{background-color:#1765cc;}input[type=button].button-secondary{background-color:white;color:#1a73e8;}input[type=button].button-secondary:hover{background-color:#d2e3fc;}#response-container{background-color:#fff;border:0;border-radius:2px;box-shadow:01px4px-1pxrgba(0,0,0,0.3);margin:10px;padding:00.5em;font:40018pxRoboto,Arial,sans-serif;overflow:hidden;overflow:auto;max-height:50%;max-width:90%;background-color:rgba(255,255,255,0.95);font-size:small;}#instructions{background-color:#fff;border:0;border-radius:2px;box-shadow:01px4px-1pxrgba(0,0,0,0.3);margin:10px;padding:00.5em;font:40018pxRoboto,Arial,sans-serif;overflow:hidden;padding:1rem;font-size:medium;}

HTML

<html>  <head>    <title>Geocoding Service</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-geocoding-simplehttps://github.com/googlemaps/js-samples.gitcdjs-samplesnpminpmstart

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

gitcheckoutsample-SAMPLE_NAMEnpminpmstart

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Last updated 2025-10-31 UTC.