asyncfunctioninitMap(){// Request needed libraries.const{Map}=awaitgoogle.maps.importLibrary("maps")asgoogle.maps.MapsLibrary;const{AdvancedMarkerElement}=awaitgoogle.maps.importLibrary("marker")asgoogle.maps.MarkerLibrary;constmyLatlng={lat:-25.363,lng:131.044};constmap=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{zoom:4,center:myLatlng,mapId:"DEMO_MAP_ID",});constmarker=newgoogle.maps.marker.AdvancedMarkerElement({position:myLatlng,map,title:"Click to zoom",});map.addListener("center_changed",()=>{// 3 seconds after the center of the map has changed, pan back to the// marker.window.setTimeout(()=>{map.panTo(marker.positionasgoogle.maps.LatLng);},3000);});marker.addListener("click",()=>{map.setZoom(8);map.setCenter(marker.positionasgoogle.maps.LatLng);});}initMap();
asyncfunctioninitMap(){// Request needed libraries.const{Map}=awaitgoogle.maps.importLibrary("maps");const{AdvancedMarkerElement}=awaitgoogle.maps.importLibrary("marker");constmyLatlng={lat:-25.363,lng:131.044};constmap=newgoogle.maps.Map(document.getElementById("map"),{zoom:4,center:myLatlng,mapId:"DEMO_MAP_ID",});constmarker=newgoogle.maps.marker.AdvancedMarkerElement({position:myLatlng,map,title:"Click to zoom",});map.addListener("center_changed",()=>{// 3 seconds after the center of the map has changed, pan back to the// marker.window.setTimeout(()=>{map.panTo(marker.position);},3000);});marker.addListener("click",()=>{map.setZoom(8);map.setCenter(marker.position);});}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;}
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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04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 showcases the implementation of event listeners in Google Maps using JavaScript or TypeScript.\u003c/p\u003e\n"],["\u003cp\u003eClicking the marker on the map triggers a zoom-in and centers the map on the marker's location.\u003c/p\u003e\n"],["\u003cp\u003eThe map automatically pans back to the marker's position 3 seconds after the center of the map is changed.\u003c/p\u003e\n"],["\u003cp\u003eCode samples in JavaScript, TypeScript, HTML, and CSS are provided, alongside links to documentation and live demos.\u003c/p\u003e\n"]]],[],null,["This example demonstrates the use of event listeners. It\n\n- listens for the `click` event on a marker to zoom the map when the marker is clicked.\n- listens for the `center_changed` event to pan the map back to the marker after 3 seconds.\n\n\u003cbr /\u003e\n\nRead the [documentation](/maps/documentation/javascript/events#EventsOverview). \n\nTypeScript \n\n```typescript\nasync function initMap() {\n // Request needed libraries.\n const { Map } = await google.maps.importLibrary(\"maps\") as google.maps.MapsLibrary;\n const { AdvancedMarkerElement } = await google.maps.importLibrary(\"marker\") as google.maps.MarkerLibrary;\n\n const myLatlng = { lat: -25.363, lng: 131.044 };\n\n const map = new google.maps.Map(\n document.getElementById(\"map\") as HTMLElement,\n {\n zoom: 4,\n center: myLatlng,\n mapId: \"DEMO_MAP_ID\",\n }\n );\n\n const marker = new google.maps.marker.AdvancedMarkerElement({\n position: myLatlng,\n map,\n title: \"Click to zoom\",\n });\n\n map.addListener(\"center_changed\", () =\u003e {\n // 3 seconds after the center of the map has changed, pan back to the\n // marker.\n window.setTimeout(() =\u003e {\n map.panTo(marker.position as google.maps.LatLng);\n }, 3000);\n });\n\n marker.addListener(\"click\", () =\u003e {\n map.setZoom(8);\n map.setCenter(marker.position as google.maps.LatLng);\n });\n}\n\ninitMap();https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/samples/event-simple/index.ts#L8-L44\n```\n| **Note:** Read the [guide](/maps/documentation/javascript/using-typescript) on using TypeScript and Google Maps.\n\nJavaScript \n\n```javascript\nasync function initMap() {\n // Request needed libraries.\n const { Map } = await google.maps.importLibrary(\"maps\");\n const { AdvancedMarkerElement } = await google.maps.importLibrary(\"marker\");\n const myLatlng = { lat: -25.363, lng: 131.044 };\n const map = new google.maps.Map(document.getElementById(\"map\"), {\n zoom: 4,\n center: myLatlng,\n mapId: \"DEMO_MAP_ID\",\n });\n const marker = new google.maps.marker.AdvancedMarkerElement({\n position: myLatlng,\n map,\n title: \"Click to zoom\",\n });\n\n map.addListener(\"center_changed\", () =\u003e {\n // 3 seconds after the center of the map has changed, pan back to the\n // marker.\n window.setTimeout(() =\u003e {\n map.panTo(marker.position);\n }, 3000);\n });\n marker.addListener(\"click\", () =\u003e {\n map.setZoom(8);\n map.setCenter(marker.position);\n });\n}\n\ninitMap();https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/event-simple/docs/index.js#L7-L36\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/event-simple/docs/style.css#L7-L24\n```\n\nHTML \n\n```html\n\u003chtml\u003e\n \u003chead\u003e\n \u003ctitle\u003eSimple Click Events\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!-- prettier-ignore --\u003e\n \u003cscript\u003e(g=\u003e{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=()=\u003eh||(h=new Promise(async(f,n)=\u003e{await (a=m.createElement(\"script\"));e.set(\"libraries\",[...r]+\"\");for(k in g)e.set(k.replace(/[A-Z]/g,t=\u003e\"_\"+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=()=\u003eh=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)=\u003er.add(f)&&u().then(()=\u003ed[l](f,...n))})\n ({key: \"AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg\", v: \"weekly\"});\u003c/script\u003e\n \u003c/body\u003e\n\u003c/html\u003ehttps://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/event-simple/docs/index.html#L8-L22\n```\n\nTry Sample \n[JSFiddle.net](https://jsfiddle.net/gh/get/library/pure/googlemaps/js-samples/tree/master/dist/samples/event-simple/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-event-simple&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-event-simple 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"]]
