Map Events

This example shows which events are triggered as you interact with the map.

Read the documentation .

TypeScript

 const 
  
 events 
  
 = 
  
 [ 
  
 'bounds_changed' 
 , 
  
 'center_changed' 
 , 
  
 'click' 
 , 
  
 'contextmenu' 
 , 
  
 'dblclick' 
 , 
  
 'drag' 
 , 
  
 'dragend' 
 , 
  
 'dragstart' 
 , 
  
 'heading_changed' 
 , 
  
 'idle' 
 , 
  
 'maptypeid_changed' 
 , 
  
 'mousemove' 
 , 
  
 'mouseout' 
 , 
  
 'mouseover' 
 , 
  
 'projection_changed' 
 , 
  
 'resize' 
 , 
  
 'rightclick' 
 , 
  
 // use contextmenu 
  
 'tilesloaded' 
 , 
  
 'tilt_changed' 
 , 
  
 'zoom_changed' 
 , 
 ]; 
 function 
  
 setupListener 
 ( 
 map 
 : 
  
 google.maps.Map 
 , 
  
 name 
 : 
  
 string 
 ) 
  
 { 
  
 const 
  
 eventRow 
  
 = 
  
 document 
 . 
 getElementById 
 ( 
 name 
 ) 
 ! 
 ; 
  
 map 
 . 
 addListener 
 ( 
 name 
 , 
  
 () 
  
 = 
>  
 { 
  
 eventRow 
 . 
 className 
  
 = 
  
 'event active' 
 ; 
  
 setTimeout 
 (() 
  
 = 
>  
 { 
  
 eventRow 
 . 
 className 
  
 = 
  
 'event inactive' 
 ; 
  
 }, 
  
 1000 
 ); 
  
 }); 
 } 
 async 
  
 function 
  
 init 
 () 
  
 { 
  
 // Request needed libraries. 
  
 await 
  
 google 
 . 
 maps 
 . 
 importLibrary 
 ( 
 'maps' 
 ); 
  
 const 
  
 mapElement 
  
 = 
  
 document 
 . 
 querySelector 
 ( 
 'gmp-map' 
 ) 
 ! 
 ; 
  
 populateTable 
 (); 
  
 // Get the inner map. 
  
 const 
  
 innerMap 
  
 = 
  
 mapElement 
 . 
 innerMap 
 ; 
  
 innerMap 
 . 
 setOptions 
 ({ 
  
 mapTypeControl 
 : 
  
 false 
 , 
  
 }); 
  
 for 
  
 ( 
 const 
  
 event 
  
 of 
  
 events 
 ) 
  
 { 
  
 setupListener 
 ( 
 innerMap 
 , 
  
 event 
 ); 
  
 } 
 } 
 // Dynamically create the table of events from the defined hashmap 
 function 
  
 populateTable 
 () 
  
 { 
  
 const 
  
 eventsTable 
  
 = 
  
 document 
 . 
 getElementById 
 ( 
 'sidebar' 
 ) 
 ! 
 ; 
  
 for 
  
 ( 
 const 
  
 event 
  
 of 
  
 events 
 ) 
  
 { 
  
 const 
  
 eventDiv 
  
 = 
  
 document 
 . 
 createElement 
 ( 
 'div' 
 ); 
  
 eventDiv 
 . 
 className 
  
 = 
  
 'event' 
 ; 
  
 eventDiv 
 . 
 id 
  
 = 
  
 event 
 ; 
  
 eventDiv 
 . 
 innerText 
  
 = 
  
 event 
 ; 
  
 eventsTable 
 . 
 appendChild 
 ( 
 eventDiv 
 ); 
  
 } 
 } 
 void 
  
 init 
 (); 
  

JavaScript

 const 
  
 events 
  
 = 
  
 [ 
  
 'bounds_changed' 
 , 
  
 'center_changed' 
 , 
  
 'click' 
 , 
  
 'contextmenu' 
 , 
  
 'dblclick' 
 , 
  
 'drag' 
 , 
  
 'dragend' 
 , 
  
 'dragstart' 
 , 
  
 'heading_changed' 
 , 
  
 'idle' 
 , 
  
 'maptypeid_changed' 
 , 
  
 'mousemove' 
 , 
  
 'mouseout' 
 , 
  
 'mouseover' 
 , 
  
 'projection_changed' 
 , 
  
 'resize' 
 , 
  
 'rightclick' 
 , 
  
 // use contextmenu 
  
 'tilesloaded' 
 , 
  
 'tilt_changed' 
 , 
  
 'zoom_changed' 
 , 
 ]; 
 function 
  
 setupListener 
 ( 
 map 
 , 
  
 name 
 ) 
  
 { 
  
 const 
  
 eventRow 
  
 = 
  
 document 
 . 
 getElementById 
 ( 
 name 
 ); 
  
 map 
 . 
 addListener 
 ( 
 name 
 , 
  
 () 
  
 = 
>  
 { 
  
 eventRow 
 . 
 className 
  
 = 
  
 'event active' 
 ; 
  
 setTimeout 
 (() 
  
 = 
>  
 { 
  
 eventRow 
 . 
 className 
  
 = 
  
 'event inactive' 
 ; 
  
 }, 
  
 1000 
 ); 
  
 }); 
 } 
 async 
  
 function 
  
 init 
 () 
  
 { 
  
 // Request needed libraries. 
  
 await 
  
 google 
 . 
 maps 
 . 
 importLibrary 
 ( 
 'maps' 
 ); 
  
 const 
  
 mapElement 
  
 = 
  
 document 
 . 
 querySelector 
 ( 
 'gmp-map' 
 ); 
  
 populateTable 
 (); 
  
 // Get the inner map. 
  
 const 
  
 innerMap 
  
 = 
  
 mapElement 
 . 
 innerMap 
 ; 
  
 innerMap 
 . 
 setOptions 
 ({ 
  
 mapTypeControl 
 : 
  
 false 
 , 
  
 }); 
  
 for 
  
 ( 
 const 
  
 event 
  
 of 
  
 events 
 ) 
  
 { 
  
 setupListener 
 ( 
 innerMap 
 , 
  
 event 
 ); 
  
 } 
 } 
 // Dynamically create the table of events from the defined hashmap 
 function 
  
 populateTable 
 () 
  
 { 
  
 const 
  
 eventsTable 
  
 = 
  
 document 
 . 
 getElementById 
 ( 
 'sidebar' 
 ); 
  
 for 
  
 ( 
 const 
  
 event 
  
 of 
  
 events 
 ) 
  
 { 
  
 const 
  
 eventDiv 
  
 = 
  
 document 
 . 
 createElement 
 ( 
 'div' 
 ); 
  
 eventDiv 
 . 
 className 
  
 = 
  
 'event' 
 ; 
  
 eventDiv 
 . 
 id 
  
 = 
  
 event 
 ; 
  
 eventDiv 
 . 
 innerText 
  
 = 
  
 event 
 ; 
  
 eventsTable 
 . 
 appendChild 
 ( 
 eventDiv 
 ); 
  
 } 
 } 
 void 
  
 init 
 (); 
  

CSS

 /* Optional: Makes the sample page fill the window. */ 
 html 
 , 
 body 
  
 { 
  
 height 
 : 
  
 100 
 % 
 ; 
  
 margin 
 : 
  
 0 
 ; 
  
 padding 
 : 
  
 0 
 ; 
 } 
 # 
 container 
  
 { 
  
 height 
 : 
  
 100 
 % 
 ; 
 } 
 # 
 sidebar 
  
 { 
  
 width 
 : 
  
 280 
 px 
 ; 
  
 padding 
 : 
  
 2 
 px 
 ; 
  
 margin-left 
 : 
  
 10 
 px 
 ; 
  
 margin-top 
 : 
  
 10 
 px 
 ; 
  
 overflow 
 : 
  
 hidden 
 ; 
  
 font-size 
 : 
  
 15 
 px 
 ; 
  
 font-family 
 : 
  
 'Droid Sans Mono' 
 , 
  
 monospace 
 ; 
  
 max-width 
 : 
  
 300 
 px 
 ; 
  
 background-color 
 : 
  
 white 
 ; 
 } 
 . 
 active 
  
 { 
  
 background-color 
 : 
  
 #99ccff 
 ; 
 } 
 . 
 inactive 
  
 { 
  
 background-color 
 : 
  
 white 
 ; 
 } 
  

HTML

<html>
    <head>
        <title>Map Events</title>

        <link rel="stylesheet" type="text/css" href="./style.css" />
        <script type="module" src="./index.js"></script>
        <script>
            // prettier-ignore
            (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"
            });
        </script>
    </head>
    <body>
        <gmp-map center="37.4419, -122.1419" zoom="13">
            <div id="container" slot="control-inline-start-block-start">
                <div id="sidebar"></div>
            </div>
        </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.git 
 
  
  cd 
  
 samples 
 / 
 map 
 - 
 events 
 
  
  npm 
  
 i 
 
  
  npm 
  
 start 
 
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