Utilizzare i marcatori

Sviluppatori dello Spazio economico europeo (SEE)

Se il tuo indirizzo di fatturazione si trova nello Spazio economico europeo, a partire dall'8 luglio 2025, i Termini di servizio di Google Maps Platform per il SEE si applicheranno al tuo utilizzo dei servizi. La funzionalità varia in base alla regione. Scopri di più.

Crea indicatori per i waypoint del percorso chiamando createWaypointAdvancedMarkers(). Per impostazione predefinita, createWaypointAdvancedMarkers() crea indicatori per il percorso etichettato "A", "B", "C" e così via per ogni waypoint. Puoi personalizzare ulteriormente gli indicatori passando le opzioni per modificare lo stile dell'indicatore in base all'indice dell'indicatore o alle proprietà del RouteLeg corrispondente.

Visualizza il codice sorgente dell'esempio completo

Il seguente esempio di codice mostra come creare indicatori personalizzati per i waypoint del percorso.

TypeScript

let mapPolylines: google.maps.Polyline[] = [];
const mapElement = document.querySelector('gmp-map')!;
let innerMap: google.maps.Map;

// Initialize and add the map.
async function init() {
    //  Request the needed libraries.
    const [{ event }] = await Promise.all([
        google.maps.importLibrary('core'),
        google.maps.importLibrary('maps'),
    ]);

    innerMap = mapElement.innerMap;
    innerMap.setOptions({
        mapTypeControl: false,
        mapId: 'DEMO_MAP_ID',
    });

    // Call the function after the map is loaded.
    event.addListenerOnce(innerMap, 'idle', () => {
        void getDirections();
    });
}

async function getDirections() {
    // Request the needed libraries.
    const [{ Route }, { PinElement }] = await Promise.all([
        google.maps.importLibrary('routes'),
        google.maps.importLibrary('marker'),
    ]);

    // Define routes request with an intermediate stop.
    const request: google.maps.routes.ComputeRoutesRequest = {
        origin: 'Parking lot, Christmas Tree Point Rd, San Francisco, CA 94131',
        destination: '100 Spinnaker Dr, Sausalito, CA 94965', // We're having a yummy lunch!
        intermediates: [{ location: '300 Finley Rd San Francisco, CA 94129' }], // But first, we golf!
        travelMode: 'DRIVING',
        fields: ['path', 'legs', 'viewport'],
    };

    // Call computeRoutes to get the directions.
    const result = await Route.computeRoutes(request);
    if (!result.routes || result.routes.length === 0) {
        console.warn('No routes found');
        return;
    }

    // Alter style based on marker index.
    function markerOptionsMaker(
        defaultOptions: google.maps.marker.AdvancedMarkerElementOptions,
        waypointMarkerDetails: google.maps.routes.WaypointMarkerDetails
    ) {
        const { index, totalMarkers } = waypointMarkerDetails;

        // Style the origin waypoint.
        if (index === 0) {
            return {
                ...defaultOptions,
                title: 'Origin',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'green',
                    borderColor: 'green',
                    scale: 1.5,
                }),
            };
        }

        // Style all intermediate waypoints.
        if (!(index === 0 || index === totalMarkers - 1)) {
            return {
                ...defaultOptions,
                title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
                map: innerMap,
                gmpClickable: true, // Make marker focusable and allow keyboard navigation
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'blue',
                    borderColor: 'blue',
                    scale: 1.5, // Increase size for better visibilty
                }),
            };
        }

        // Style the destination waypoint.
        if (index === totalMarkers - 1) {
            return {
                ...defaultOptions,
                title: 'Destination',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'red',
                    borderColor: 'red',
                    scale: 1.5,
                }),
            };
        }

        return { ...defaultOptions, map: innerMap };
    }

    await result.routes[0].createWaypointAdvancedMarkers(markerOptionsMaker);

    // Fit the map to the route.
    innerMap.fitBounds(result.routes[0].viewport!);
    innerMap.setHeading(270);

    // Create polylines and add them to the map.
    mapPolylines = result.routes[0].createPolylines();
    mapPolylines.forEach((polyline) => {
        polyline.setMap(innerMap);
    });
}

void init();
index.ts

Nota:leggi la guida sull'utilizzo di TypeScript e Google Maps.

JavaScript

let mapPolylines = [];
const mapElement = document.querySelector('gmp-map');
let innerMap;

// Initialize and add the map.
async function init() {
    //  Request the needed libraries.
    const [{ event }] = await Promise.all([
        google.maps.importLibrary('core'),
        google.maps.importLibrary('maps'),
    ]);

    innerMap = mapElement.innerMap;
    innerMap.setOptions({
        mapTypeControl: false,
        mapId: 'DEMO_MAP_ID',
    });

    // Call the function after the map is loaded.
    event.addListenerOnce(innerMap, 'idle', () => {
        void getDirections();
    });
}

async function getDirections() {
    // Request the needed libraries.
    const [{ Route }, { PinElement }] = await Promise.all([
        google.maps.importLibrary('routes'),
        google.maps.importLibrary('marker'),
    ]);

    // Define routes request with an intermediate stop.
    const request = {
        origin: 'Parking lot, Christmas Tree Point Rd, San Francisco, CA 94131',
        destination: '100 Spinnaker Dr, Sausalito, CA 94965', // We're having a yummy lunch!
        intermediates: [{ location: '300 Finley Rd San Francisco, CA 94129' }], // But first, we golf!
        travelMode: 'DRIVING',
        fields: ['path', 'legs', 'viewport'],
    };

    // Call computeRoutes to get the directions.
    const result = await Route.computeRoutes(request);
    if (!result.routes || result.routes.length === 0) {
        console.warn('No routes found');
        return;
    }

    // Alter style based on marker index.
    function markerOptionsMaker(defaultOptions, waypointMarkerDetails) {
        const { index, totalMarkers } = waypointMarkerDetails;

        // Style the origin waypoint.
        if (index === 0) {
            return {
                ...defaultOptions,
                title: 'Origin',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'green',
                    borderColor: 'green',
                    scale: 1.5,
                }),
            };
        }

        // Style all intermediate waypoints.
        if (!(index === 0 || index === totalMarkers - 1)) {
            return {
                ...defaultOptions,
                title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
                map: innerMap,
                gmpClickable: true, // Make marker focusable and allow keyboard navigation
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'blue',
                    borderColor: 'blue',
                    scale: 1.5, // Increase size for better visibilty
                }),
            };
        }

        // Style the destination waypoint.
        if (index === totalMarkers - 1) {
            return {
                ...defaultOptions,
                title: 'Destination',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'red',
                    borderColor: 'red',
                    scale: 1.5,
                }),
            };
        }

        return { ...defaultOptions, map: innerMap };
    }

    await result.routes[0].createWaypointAdvancedMarkers(markerOptionsMaker);

    // Fit the map to the route.
    innerMap.fitBounds(result.routes[0].viewport);
    innerMap.setHeading(270);

    // Create polylines and add them to the map.
    mapPolylines = result.routes[0].createPolylines();
    mapPolylines.forEach((polyline) => {
        polyline.setMap(innerMap);
    });
}

void init();
index.js

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;
}
style.css

HTML

<html>
    <head>
        <title>Get directions</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="37.447646, -122.113878" zoom="12"></gmp-map>
    </body>
</html>
index.html

Aggiungere indicatori predefiniti

Per aggiungere indicatori utilizzando lo stile predefinito, chiama createWaypointAdvancedMarkers() passando un'opzione di marcatore per specificare la mappa corrente, come mostrato nel seguente snippet di codice.

// Create markers using default style.
const markers = await result.routes[0].createWaypointAdvancedMarkers({ map: innerMap });
  

Importante:il campo legs deve essere richiesto in ComputeRoutesRequest.fields affinché vengano inclusi i waypoint intermedi.

Aggiungere indicatori con uno stile personalizzato

Per aggiungere indicatori utilizzando uno stile personalizzato, chiama createWaypointAdvancedMarkers() passando le opzioni dell'indicatore che includono le proprietà dello stile personalizzato. Quando applichi stili come questo, tutti i marcatori vengono formattati allo stesso modo. Il seguente snippet di codice mostra come creare marcatori con uno stile personalizzato.

// Create markers with a custom style.
const markerOptions = {
  map: innerMap,
  content: new PinElement({
    scale: 1.5,
    background: '#8C0DD1',
    borderColor: '#6D0AA5',
    glyphColor: '#6D0AA5',
  }).element
}

const markers = await result.routes[0].createWaypointAdvancedMarkers(markerOptions);
  

Applicare uno stile personalizzato ai singoli indicatori

Per applicare uno stile personalizzato ai singoli indicatori, passa una funzione a createWaypointAdvancedMarkers() per impostare le opzioni di stile dell'indicatore in base all'indice dell'indicatore o alle proprietà RouteLeg. Il seguente snippet di codice mostra una funzione per creare indicatori e applicare uno stile in base all'indice dell'indicatore:

TypeScript

// Alter style based on marker index.
function markerOptionsMaker(
    defaultOptions: google.maps.marker.AdvancedMarkerElementOptions,
    waypointMarkerDetails: google.maps.routes.WaypointMarkerDetails
) {
    const { index, totalMarkers } = waypointMarkerDetails;

    // Style the origin waypoint.
    if (index === 0) {
        return {
            ...defaultOptions,
            title: 'Origin',
            map: innerMap,
            gmpClickable: true,
            content: new PinElement({
                glyphText: (index + 1).toString(),
                glyphColor: 'white',
                background: 'green',
                borderColor: 'green',
                scale: 1.5,
            }),
        };
    }

    // Style all intermediate waypoints.
    if (!(index === 0 || index === totalMarkers - 1)) {
        return {
            ...defaultOptions,
            title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
            map: innerMap,
            gmpClickable: true, // Make marker focusable and allow keyboard navigation
            content: new PinElement({
                glyphText: (index + 1).toString(),
                glyphColor: 'white',
                background: 'blue',
                borderColor: 'blue',
                scale: 1.5, // Increase size for better visibilty
            }),
        };
    }

    // Style the destination waypoint.
    if (index === totalMarkers - 1) {
        return {
            ...defaultOptions,
            title: 'Destination',
            map: innerMap,
            gmpClickable: true,
            content: new PinElement({
                glyphText: (index + 1).toString(),
                glyphColor: 'white',
                background: 'red',
                borderColor: 'red',
                scale: 1.5,
            }),
        };
    }

    return { ...defaultOptions, map: innerMap };
}

await result.routes[0].createWaypointAdvancedMarkers(markerOptionsMaker);
index.ts

Nota:leggi la guida sull'utilizzo di TypeScript e Google Maps.

JavaScript

// Alter style based on marker index.
function markerOptionsMaker(defaultOptions, waypointMarkerDetails) {
    const { index, totalMarkers } = waypointMarkerDetails;

    // Style the origin waypoint.
    if (index === 0) {
        return {
            ...defaultOptions,
            title: 'Origin',
            map: innerMap,
            gmpClickable: true,
            content: new PinElement({
                glyphText: (index + 1).toString(),
                glyphColor: 'white',
                background: 'green',
                borderColor: 'green',
                scale: 1.5,
            }),
        };
    }

    // Style all intermediate waypoints.
    if (!(index === 0 || index === totalMarkers - 1)) {
        return {
            ...defaultOptions,
            title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
            map: innerMap,
            gmpClickable: true, // Make marker focusable and allow keyboard navigation
            content: new PinElement({
                glyphText: (index + 1).toString(),
                glyphColor: 'white',
                background: 'blue',
                borderColor: 'blue',
                scale: 1.5, // Increase size for better visibilty
            }),
        };
    }

    // Style the destination waypoint.
    if (index === totalMarkers - 1) {
        return {
            ...defaultOptions,
            title: 'Destination',
            map: innerMap,
            gmpClickable: true,
            content: new PinElement({
                glyphText: (index + 1).toString(),
                glyphColor: 'white',
                background: 'red',
                borderColor: 'red',
                scale: 1.5,
            }),
        };
    }

    return { ...defaultOptions, map: innerMap };
}

await result.routes[0].createWaypointAdvancedMarkers(markerOptionsMaker);
index.js

Rendere accessibili i marcatori

Puoi migliorare l'accessibilità dei marcatori nei seguenti modi:

• Fornisci un titolo:imposta la proprietà title nelle opzioni dell'indicatore per fornire un'etichetta per l'indicatore. Questa etichetta viene utilizzata da screen reader e tecnologie assistive.
• Distingui i waypoint intermedi:quando passi una funzione di stile a createWaypointAdvancedMarkers(), utilizza i parametri index e totalMarkers di WaypointMarkerDetails per assegnare titoli ed etichette unici e descrittivi ai waypoint intermedi (ad esempio, Waypoint ${(index + 1).toString()}) in modo che gli utenti di screen reader possano distinguerli dall'origine e dalla destinazione.
• Attiva la navigazione da tastiera e gli eventi di clic:imposta gmpClickable: true nelle opzioni dell'indicatore per rendere gli indicatori interattivi selezionabili con la tastiera (utilizzando i tasti Tab e Freccia) e in grado di rispondere all'input da tastiera e mouse.
• Aumenta le dimensioni del marcatore:imposta la proprietà scale su PinElement (ad esempio, scale: 1.5) per ridurre la precisione necessaria per interagire con i marcatori, soprattutto sui dispositivi touchscreen. I marcatori predefiniti soddisfano lo standard WCAG AA per le dimensioni minime e l'aumento della scala contribuisce a soddisfare lo standard WCAG AAA per le dimensioni target.
• Mantieni il contrasto di colore:quando personalizzi i colori di PinElement, scegli valori glyphColor e background con un contrasto sufficiente in modo che le etichette dei waypoint rimangano leggibili.

Il seguente snippet di codice mostra come applicare uno stile a un indicatore per l'accessibilità. Ha un title per fornire un'etichetta per gli screen reader; il titolo utilizza l'indice per distinguere i waypoint intermedi. La proprietà gmpClickable è impostata su true per attivare la navigazione da tastiera e gli eventi di clic, mentre scale è stato aumentato per facilitare l'interazione con i marker.

TypeScript

// Style all intermediate waypoints.
if (!(index === 0 || index === totalMarkers - 1)) {
    return {
        ...defaultOptions,
        title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
        map: innerMap,
        gmpClickable: true, // Make marker focusable and allow keyboard navigation
        content: new PinElement({
            glyphText: (index + 1).toString(),
            glyphColor: 'white',
            background: 'blue',
            borderColor: 'blue',
            scale: 1.5, // Increase size for better visibilty
        }),
    };
}
index.ts

Nota:leggi la guida sull'utilizzo di TypeScript e Google Maps.

JavaScript

// Style all intermediate waypoints.
if (!(index === 0 || index === totalMarkers - 1)) {
    return {
        ...defaultOptions,
        title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
        map: innerMap,
        gmpClickable: true, // Make marker focusable and allow keyboard navigation
        content: new PinElement({
            glyphText: (index + 1).toString(),
            glyphColor: 'white',
            background: 'blue',
            borderColor: 'blue',
            scale: 1.5, // Increase size for better visibilty
        }),
    };
}
index.js

Per maggiori dettagli, vedi Rendere i segnaposto selezionabili e accessibili.

Vedi l'esempio completo

TypeScript

let mapPolylines: google.maps.Polyline[] = [];
const mapElement = document.querySelector('gmp-map')!;
let innerMap: google.maps.Map;

// Initialize and add the map.
async function init() {
    //  Request the needed libraries.
    const [{ event }] = await Promise.all([
        google.maps.importLibrary('core'),
        google.maps.importLibrary('maps'),
    ]);

    innerMap = mapElement.innerMap;
    innerMap.setOptions({
        mapTypeControl: false,
        mapId: 'DEMO_MAP_ID',
    });

    // Call the function after the map is loaded.
    event.addListenerOnce(innerMap, 'idle', () => {
        void getDirections();
    });
}

async function getDirections() {
    // Request the needed libraries.
    const [{ Route }, { PinElement }] = await Promise.all([
        google.maps.importLibrary('routes'),
        google.maps.importLibrary('marker'),
    ]);

    // Define routes request with an intermediate stop.
    const request: google.maps.routes.ComputeRoutesRequest = {
        origin: 'Parking lot, Christmas Tree Point Rd, San Francisco, CA 94131',
        destination: '100 Spinnaker Dr, Sausalito, CA 94965', // We're having a yummy lunch!
        intermediates: [{ location: '300 Finley Rd San Francisco, CA 94129' }], // But first, we golf!
        travelMode: 'DRIVING',
        fields: ['path', 'legs', 'viewport'],
    };

    // Call computeRoutes to get the directions.
    const result = await Route.computeRoutes(request);
    if (!result.routes || result.routes.length === 0) {
        console.warn('No routes found');
        return;
    }

    // Alter style based on marker index.
    function markerOptionsMaker(
        defaultOptions: google.maps.marker.AdvancedMarkerElementOptions,
        waypointMarkerDetails: google.maps.routes.WaypointMarkerDetails
    ) {
        const { index, totalMarkers } = waypointMarkerDetails;

        // Style the origin waypoint.
        if (index === 0) {
            return {
                ...defaultOptions,
                title: 'Origin',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'green',
                    borderColor: 'green',
                    scale: 1.5,
                }),
            };
        }

        // Style all intermediate waypoints.
        if (!(index === 0 || index === totalMarkers - 1)) {
            return {
                ...defaultOptions,
                title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
                map: innerMap,
                gmpClickable: true, // Make marker focusable and allow keyboard navigation
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'blue',
                    borderColor: 'blue',
                    scale: 1.5, // Increase size for better visibilty
                }),
            };
        }

        // Style the destination waypoint.
        if (index === totalMarkers - 1) {
            return {
                ...defaultOptions,
                title: 'Destination',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'red',
                    borderColor: 'red',
                    scale: 1.5,
                }),
            };
        }

        return { ...defaultOptions, map: innerMap };
    }

    await result.routes[0].createWaypointAdvancedMarkers(markerOptionsMaker);

    // Fit the map to the route.
    innerMap.fitBounds(result.routes[0].viewport!);
    innerMap.setHeading(270);

    // Create polylines and add them to the map.
    mapPolylines = result.routes[0].createPolylines();
    mapPolylines.forEach((polyline) => {
        polyline.setMap(innerMap);
    });
}

void init();
index.ts

Nota:leggi la guida sull'utilizzo di TypeScript e Google Maps.

JavaScript

let mapPolylines = [];
const mapElement = document.querySelector('gmp-map');
let innerMap;

// Initialize and add the map.
async function init() {
    //  Request the needed libraries.
    const [{ event }] = await Promise.all([
        google.maps.importLibrary('core'),
        google.maps.importLibrary('maps'),
    ]);

    innerMap = mapElement.innerMap;
    innerMap.setOptions({
        mapTypeControl: false,
        mapId: 'DEMO_MAP_ID',
    });

    // Call the function after the map is loaded.
    event.addListenerOnce(innerMap, 'idle', () => {
        void getDirections();
    });
}

async function getDirections() {
    // Request the needed libraries.
    const [{ Route }, { PinElement }] = await Promise.all([
        google.maps.importLibrary('routes'),
        google.maps.importLibrary('marker'),
    ]);

    // Define routes request with an intermediate stop.
    const request = {
        origin: 'Parking lot, Christmas Tree Point Rd, San Francisco, CA 94131',
        destination: '100 Spinnaker Dr, Sausalito, CA 94965', // We're having a yummy lunch!
        intermediates: [{ location: '300 Finley Rd San Francisco, CA 94129' }], // But first, we golf!
        travelMode: 'DRIVING',
        fields: ['path', 'legs', 'viewport'],
    };

    // Call computeRoutes to get the directions.
    const result = await Route.computeRoutes(request);
    if (!result.routes || result.routes.length === 0) {
        console.warn('No routes found');
        return;
    }

    // Alter style based on marker index.
    function markerOptionsMaker(defaultOptions, waypointMarkerDetails) {
        const { index, totalMarkers } = waypointMarkerDetails;

        // Style the origin waypoint.
        if (index === 0) {
            return {
                ...defaultOptions,
                title: 'Origin',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'green',
                    borderColor: 'green',
                    scale: 1.5,
                }),
            };
        }

        // Style all intermediate waypoints.
        if (!(index === 0 || index === totalMarkers - 1)) {
            return {
                ...defaultOptions,
                title: `Waypoint ${(index + 1).toString()}`, // Provide label for screenreaders
                map: innerMap,
                gmpClickable: true, // Make marker focusable and allow keyboard navigation
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'blue',
                    borderColor: 'blue',
                    scale: 1.5, // Increase size for better visibilty
                }),
            };
        }

        // Style the destination waypoint.
        if (index === totalMarkers - 1) {
            return {
                ...defaultOptions,
                title: 'Destination',
                map: innerMap,
                gmpClickable: true,
                content: new PinElement({
                    glyphText: (index + 1).toString(),
                    glyphColor: 'white',
                    background: 'red',
                    borderColor: 'red',
                    scale: 1.5,
                }),
            };
        }

        return { ...defaultOptions, map: innerMap };
    }

    await result.routes[0].createWaypointAdvancedMarkers(markerOptionsMaker);

    // Fit the map to the route.
    innerMap.fitBounds(result.routes[0].viewport);
    innerMap.setHeading(270);

    // Create polylines and add them to the map.
    mapPolylines = result.routes[0].createPolylines();
    mapPolylines.forEach((polyline) => {
        polyline.setMap(innerMap);
    });
}

void init();
index.js

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;
}
style.css

HTML

<html>
    <head>
        <title>Get directions</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="37.447646, -122.113878" zoom="12"></gmp-map>
    </body>
</html>
index.html