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Control Options

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Page Summary

This code demonstrates how to customize the Map Type control in Google Maps to display as a dropdown menu.
It utilizes the MapTypeControlOptions and specifically the style property set to DROPDOWN_MENU to achieve this.
The example also shows how to limit the map types displayed in the dropdown to "roadmap" and "terrain" using the mapTypeIds property.
The sample provides both TypeScript and JavaScript implementations along with the necessary HTML and CSS for rendering.

This example sets the Map Type control to use the dropdown style.

Read the documentation.

[フレーム]

TypeScript

// You can set control options to change the default position or style of many
// of the map controls.
asyncfunctioninit(){
// Request the needed libraries.
const[{MapTypeControlStyle,MapTypeId},{ControlPosition}]=
awaitPromise.all([
google.maps.importLibrary('maps'),
google.maps.importLibrary('core'),
]);
constmapElement=document.querySelector('gmp-map')!;
constinnerMap=mapElement.innerMap;
innerMap.setOptions({
mapTypeControl:true,
mapTypeControlOptions:{
style:MapTypeControlStyle.DROPDOWN_MENU,
mapTypeIds:[MapTypeId.ROADMAP,MapTypeId.TERRAIN],
position:ControlPosition.TOP_CENTER,
},
});
}
voidinit();index.ts

JavaScript

// You can set control options to change the default position or style of many
// of the map controls.
asyncfunctioninit(){
// Request the needed libraries.
const[{MapTypeControlStyle,MapTypeId},{ControlPosition}]=
awaitPromise.all([
google.maps.importLibrary('maps'),
google.maps.importLibrary('core'),
]);
constmapElement=document.querySelector('gmp-map');
constinnerMap=mapElement.innerMap;
innerMap.setOptions({
mapTypeControl:true,
mapTypeControlOptions:{
style:MapTypeControlStyle.DROPDOWN_MENU,
mapTypeIds:[MapTypeId.ROADMAP,MapTypeId.TERRAIN],
position:ControlPosition.TOP_CENTER,
},
});
}
voidinit();index.js

CSS

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
gmp-map{
height:100%;
}
/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body{
height:100%;
margin:0;
padding:0;
}
style.css

HTML

<html>
 <head>
 <title>Control Options</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: "GOOGLE_MAPS_API_KEY"
 });
 </script>
 </head>
 <body>
 <gmp-map
 center="-44.03416970075901, 170.4710062642279"
 zoom="8"></gmp-map>
 </body>
</html>index.html

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.

gitclonehttps://github.com/googlemaps-samples/js-api-samples.git
cdsamples/control-options
npmi
npmstart