Page Summary
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This example demonstrates geocoding and reverse geocoding on a map using the Google Maps JavaScript API.
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Users can enter an address in a text field to geocode or click on the map for reverse geocoding.
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The map will pan to the geocoded location and display a marker.
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The sample provides code in both JavaScript and TypeScript.
This example creates a map along with a text input field and a button. When you click the "geocode" button, the sample sends a geocoding request, then pans the map to the geocoded location.
Read the documentation .
TypeScript
let geocoder : google.maps.Geocoder ; let mapElement ; let innerMap ; let marker ; let responseDiv ; let response ; async function initMap () { // Request the needed libraries. const [{ Map , InfoWindow }, { Geocoder }, { AdvancedMarkerElement }] = await Promise . all ([ google . maps . importLibrary ( 'maps' ) as Promise<google . maps . MapsLibrary > , google . maps . importLibrary ( 'geocoding' ) as Promise<google . maps . GeocodingLibrary > , google . maps . importLibrary ( 'marker' ) as Promise<google . maps . MarkerLibrary > , ]); // Get the gmp-map element. mapElement = document . querySelector ( 'gmp-map' ) as google . maps . MapElement ; // Get the inner map. innerMap = mapElement . innerMap ; // Set map options. innerMap . setOptions ({ mapTypeControl : false , fullscreenControl : false , cameraControlOptions : { position : google.maps.ControlPosition.INLINE_START_BLOCK_END , }, draggableCursor : 'crosshair' , }); geocoder = new google . maps . Geocoder (); const inputText = document . getElementById ( 'address' ) as HTMLInputElement ; const submitButton = document . getElementById ( 'submit' ) as HTMLInputElement ; const clearButton = document . getElementById ( 'clear' ) as HTMLInputElement ; responseDiv = document . getElementById ( 'response-container' ) as HTMLDivElement ; response = document . getElementById ( 'response' ) as HTMLPreElement ; marker = new google . maps . marker . AdvancedMarkerElement ({}); innerMap . addListener ( 'click' , ( e : google.maps.MapMouseEvent ) = > { geocode ({ location : e.latLng }); }); submitButton . addEventListener ( 'click' , () = > geocode ({ address : inputText.value }) ); clearButton . addEventListener ( 'click' , () = > { clear (); }); clear (); } async function clear () { marker . setMap ( null ); responseDiv . style . display = 'none' ; } async function geocode ( request : google.maps.GeocoderRequest ) { clear (); geocoder . geocode ( request ) . then (( result ) = > { const { results } = result ; innerMap . setCenter ( results [ 0 ]. geometry . location ); marker . position = new google . maps . LatLng ( results [ 0 ]. geometry . location ); mapElement . append ( marker ); responseDiv . style . display = 'block' ; response . innerText = JSON . stringify ( result , null , 2 ); return results ; }) . catch (( e ) = > { alert ( 'Geocode was not successful for the following reason: ' + e ); }); } initMap ();
JavaScript
let geocoder ; let mapElement ; let innerMap ; let marker ; let responseDiv ; let response ; async function initMap () { // Request the needed libraries. const [{ Map , InfoWindow }, { Geocoder }, { AdvancedMarkerElement }] = await Promise . all ([ google . maps . importLibrary ( 'maps' ), google . maps . importLibrary ( 'geocoding' ), google . maps . importLibrary ( 'marker' ), ]); // Get the gmp-map element. mapElement = document . querySelector ( 'gmp-map' ); // Get the inner map. innerMap = mapElement . innerMap ; // Set map options. innerMap . setOptions ({ mapTypeControl : false , fullscreenControl : false , cameraControlOptions : { position : google . maps . ControlPosition . INLINE_START_BLOCK_END , }, draggableCursor : 'crosshair' , }); geocoder = new google . maps . Geocoder (); const inputText = document . getElementById ( 'address' ); const submitButton = document . getElementById ( 'submit' ); const clearButton = document . getElementById ( 'clear' ); responseDiv = document . getElementById ( 'response-container' ); response = document . getElementById ( 'response' ); marker = new google . maps . marker . AdvancedMarkerElement ({}); innerMap . addListener ( 'click' , ( e ) = > { geocode ({ location : e . latLng }); }); submitButton . addEventListener ( 'click' , () = > geocode ({ address : inputText . value })); clearButton . addEventListener ( 'click' , () = > { clear (); }); clear (); } async function clear () { marker . setMap ( null ); responseDiv . style . display = 'none' ; } async function geocode ( request ) { clear (); geocoder . geocode ( request ) . then (( result ) = > { const { results } = result ; innerMap . setCenter ( results [ 0 ]. geometry . location ); marker . position = new google . maps . LatLng ( results [ 0 ]. geometry . location ); mapElement . append ( marker ); responseDiv . style . display = 'block' ; response . innerText = JSON . stringify ( result , null , 2 ); return results ; }) . catch (( e ) = > { alert ( 'Geocode was not successful for the following reason: ' + e ); }); } initMap ();
CSS
gmp-map { height : 100 % ; width : 100 % ; } /* * Optional: Makes the sample page fill the window. */ html , body { height : 100 % ; margin : 0 ; padding : 0 ; } # floating-panel { background-color : #fff ; border-radius : 5 px ; box-shadow : rgba ( 0 , 0 , 0 , 0.35 ) 0 px 5 px 15 px ; margin : 10 px ; padding : 5 px ; font : 400 18 px Roboto , Arial , sans-serif ; width : 350 px ; height : 100 px } # response-container { background-color : #fff ; border : 0 ; border-radius : 5 px ; box-shadow : rgba ( 0 , 0 , 0 , 0.35 ) 0 px 5 px 15 px ; padding : 5 px ; margin : 10 px ; font-size : small ; width : 400 px ; background-color : rgba ( 255 , 255 , 255 , 0.95 ); max-height : 70 vh ; overflow-x : auto ; display : none ; } # address { width : 100 % ; padding : 10 px ; margin : 5 px 0 ; box-sizing : border-box ; } # submit , # clear { background-color : #fff ; border : 0 ; border-radius : 2 px ; box-shadow : 0 1 px 4 px -1 px rgba ( 0 , 0 , 0 , 0.3 ); height : 40 px ; cursor : pointer ; } # clear : hover { background : rgb ( 235 , 235 , 235 ); } # submit { background-color : #1a73e8 ; color : white ; } # submit : hover { background-color : #1765cc ; }
HTML
<html> <head> <title>Geocoding Service</title> <link rel="stylesheet" type="text/css" href="./style.css" /> <script type="module" src="./index.js"></script> <!-- prettier-ignore --> <script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))}) ({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script> </head> <body> <gmp-map center="-34.397, 150.644" zoom="10" map-id="DEMO_MAP_ID"> <div id="floating-panel" slot="control-block-start-inline-start"> <input type="text" id="address" placeholder="Enter an address or click the map to reverse geocode." /> <br /> <input type="button" id="submit" value="Geocode" /> <input type="button" id="clear" value="Clear Results" /> <br /> </div> <pre id="response-container" slot="control-block-start-inline-end"> <code id="response"></code> </pre> </gmp-map> </body> </html>
Try Sample
Clone Sample
Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.
git clone https : //github.com/googlemaps-samples/js-api-samples.gitcd samples / geocoding - simplenpm inpm start
