Accessing Arguments in UI Events
Page Summary
This example demonstrates how to create a clickable map that places a marker at the clicked location.
When a user clicks on the map, a marker is added and the map view is centered on that point.
It utilizes the Google Maps JavaScript API's event listeners to handle user interactions.
The sample code is provided in both TypeScript and JavaScript for flexibility.
The HTML, CSS and Javascript code are provided to facilitate implementing this feature on a webpage.
This example creates a map that the user can click to create a marker at theclicked point.
Read thedocumentation.
TypeScript
asyncfunctioninitMap(){// Request needed libraries.const{Map}=awaitgoogle.maps.importLibrary("maps")asgoogle.maps.MapsLibrary;const{AdvancedMarkerElement,PinElement}=awaitgoogle.maps.importLibrary("marker")asgoogle.maps.MarkerLibrary;constmap=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{zoom:4,center:{lat:-25.363882,lng:131.044922},mapId:"DEMO_MAP_ID",});map.addListener("click",(e)=>{placeMarkerAndPanTo(e.latLng,map);});}functionplaceMarkerAndPanTo(latLng:google.maps.LatLng,map:google.maps.Map){newgoogle.maps.marker.AdvancedMarkerElement({position:latLng,map:map,});map.panTo(latLng);}initMap();
JavaScript
asyncfunctioninitMap(){// Request needed libraries.const{Map}=awaitgoogle.maps.importLibrary("maps");const{AdvancedMarkerElement,PinElement}=awaitgoogle.maps.importLibrary("marker",);constmap=newgoogle.maps.Map(document.getElementById("map"),{zoom:4,center:{lat:-25.363882,lng:131.044922},mapId:"DEMO_MAP_ID",});map.addListener("click",(e)=>{placeMarkerAndPanTo(e.latLng,map);});}functionplaceMarkerAndPanTo(latLng,map){newgoogle.maps.marker.AdvancedMarkerElement({position:latLng,map:map,});map.panTo(latLng);}initMap();
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>Accessing Arguments in UI Events</title> <link rel="stylesheet" type="text/css" href="./style.css" /> <script type="module" src="./index.js"></script> </head> <body> <div></div> <!-- 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: "AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg", v: "weekly"});</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-event-argumentshttps://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 2025-12-11 UTC.