สร้างเครื่องหมายด้วย HTML และ CSS

ด้วยตัวทำเครื่องหมายขั้นสูง คุณสามารถใช้ HTML และ CSS ที่กำหนดเองเพื่อ สร้างเครื่องหมายที่มีผลกระทบด้านภาพสูง ซึ่งสามารถนำเสนอการโต้ตอบและ ภาพเคลื่อนไหว เพิ่มอินสแตนซ์ AdvancedMarkerElement ทั้งหมดไปยัง DOM เป็น HTML ซึ่งเข้าถึงได้ผ่านพร็อพเพอร์ตี้ element และดำเนินการใน ในลักษณะเดียวกับองค์ประกอบ DOM อื่นๆ เนื่องจาก AdvancedMarkerElement เป็น DOM คุณสามารถใช้รูปแบบ CSS กับตัวทำเครื่องหมายเริ่มต้นได้โดยตรง และสร้าง เครื่องหมายที่กำหนดเองทั้งหมดตั้งแต่ต้นโดยใช้ HTML และ CSS

ตัวทำเครื่องหมาย HTML อย่างง่าย

ตัวอย่างแผนที่นี้แสดงการสร้างตัวทำเครื่องหมาย HTML ที่กำหนดเองอย่างง่าย

ดูแหล่งที่มา

ตัวอย่างต่อไปนี้แสดงการสร้างองค์ประกอบ DIV ใหม่โดยกำหนดคลาส CSS และเนื้อหาข้อความไปยัง DIV แล้วส่ง DIV เป็นค่า AdvancedMarkerElement.content

TypeScript

async function initMap() {
  // Request needed libraries.
  const { Map } = await google.maps.importLibrary("maps") as google.maps.MapsLibrary;
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker") as google.maps.MarkerLibrary;

  const map = new Map(document.getElementById('map') as HTMLElement, {
    center: { lat: 37.42, lng: -122.1 },
    zoom: 14,
    mapId: '4504f8b37365c3d0',
  });

  const priceTag = document.createElement('div');
  priceTag.className = 'price-tag';
  priceTag.textContent = '$2.5M';

  const marker = new AdvancedMarkerElement({
    map,
    position: { lat: 37.42, lng: -122.1 },
    content: priceTag,
  });
}
initMap();
index.ts

JavaScript

async function initMap() {
  // Request needed libraries.
  const { Map } = await google.maps.importLibrary("maps");
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker");
  const map = new Map(document.getElementById("map"), {
    center: { lat: 37.42, lng: -122.1 },
    zoom: 14,
    mapId: "4504f8b37365c3d0",
  });
  const priceTag = document.createElement("div");

  priceTag.className = "price-tag";
  priceTag.textContent = "$2.5M";

  const marker = new AdvancedMarkerElement({
    map,
    position: { lat: 37.42, lng: -122.1 },
    content: priceTag,
  });
}

initMap();
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;
}

/* HTML marker styles */
.price-tag {
  background-color: #4285F4;
  border-radius: 8px;
  color: #FFFFFF;
  font-size: 14px;
  padding: 10px 15px;
  position: relative;
}

.price-tag::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translate(-50%, 0);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid #4285F4;
}

style.css

HTML

<html>
  <head>
    <title>Advanced Marker Simple HTML</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="map"></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>
index.html

ลองใช้ตัวอย่าง

เครื่องหมายแบบอินเทอร์แอกทีฟ

ตัวอย่างนี้แสดงการสร้างชุดเครื่องหมายแบบอินเทอร์แอกทีฟที่แสดงสิ่งที่สมมติขึ้น ข้อมูลเมื่อคลิก ฟังก์ชันส่วนใหญ่ในตัวอย่างนี้มี ภายใน CSS

ดูแหล่งที่มา

TypeScript

async function initMap() {
  // Request needed libraries.
  const { Map } = await google.maps.importLibrary("maps") as google.maps.MapsLibrary;
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker") as google.maps.MarkerLibrary;

  const center = {lat: 37.43238031167444, lng: -122.16795397128632};
  const map = new Map(document.getElementById("map") as HTMLElement, {
    zoom: 11,
    center,
    mapId: "4504f8b37365c3d0",
  });

  for (const property of properties) {
    const AdvancedMarkerElement = new google.maps.marker.AdvancedMarkerElement({
      map,
      content: buildContent(property),
      position: property.position,
      title: property.description,
    });

    AdvancedMarkerElement.addListener("click", () => {
      toggleHighlight(AdvancedMarkerElement, property);
    });
  }
}

function toggleHighlight(markerView, property) {
  if (markerView.content.classList.contains("highlight")) {
  	markerView.content.classList.remove("highlight");
  	markerView.zIndex = null;
  } else {
  	markerView.content.classList.add("highlight");
  	markerView.zIndex = 1;
  }
}

function buildContent(property) {
  const content = document.createElement("div");
  content.classList.add("property");
  content.innerHTML = `
    <div class="icon">
        <i aria-hidden="true" class="fa fa-icon fa-${property.type}" title="${property.type}"></i>
        <span class="fa-sr-only">${property.type}</span>
    </div>
    <div class="details">
        <div class="price">${property.price}</div>
        <div class="address">${property.address}</div>
        <div class="features">
        <div>
            <i aria-hidden="true" class="fa fa-bed fa-lg bed" title="bedroom"></i>
            <span class="fa-sr-only">bedroom</span>
            <span>${property.bed}</span>
        </div>
        <div>
            <i aria-hidden="true" class="fa fa-bath fa-lg bath" title="bathroom"></i>
            <span class="fa-sr-only">bathroom</span>
            <span>${property.bath}</span>
        </div>
        <div>
            <i aria-hidden="true" class="fa fa-ruler fa-lg size" title="size"></i>
            <span class="fa-sr-only">size</span>
            <span>${property.size} ft<sup>2</sup></span>
        </div>
        </div>
    </div>
    `;
  return content;
}

const properties = [{
  address: '215 Emily St, MountainView, CA',
  description: 'Single family house with modern design',
  price: '$ 3,889,000',
  type: 'home',
  bed: 5,
  bath: 4.5,
  size: 300,
  position: {
    lat: 37.50024109655184,
    lng: -122.28528451834352,
  },
}, {
  address: '108 Squirrel Ln &#128063;, Menlo Park, CA',
  description: 'Townhouse with friendly neighbors',
  price: '$ 3,050,000',
  type: 'building',
  bed: 4,
  bath: 3,
  size: 200,
  position: {
    lat: 37.44440882321596,
    lng: -122.2160620727,
  },
},
{
  address: '100 Chris St, Portola Valley, CA',
  description: 'Spacious warehouse great for small business',
  price: '$ 3,125,000',
  type: 'warehouse',
  bed: 4,
  bath: 4,
  size: 800,
  position: {
    lat: 37.39561833718522,
    lng: -122.21855116258479,
  },
}, {
  address: '98 Aleh Ave, Palo Alto, CA',
  description: 'A lovely store on busy road',
  price: '$ 4,225,000',
  type: 'store-alt',
  bed: 2,
  bath: 1,
  size: 210,
  position: {
    lat: 37.423928529779644,
    lng: -122.1087629822001,
  },
}, {
  address: '2117 Su St, MountainView, CA',
  description: 'Single family house near golf club',
  price: '$ 1,700,000',
  type: 'home',
  bed: 4,
  bath: 3,
  size: 200,
  position: {
    lat: 37.40578635332598,
    lng: -122.15043378466069,
  },
}, {
  address: '197 Alicia Dr, Santa Clara, CA',
  description: 'Multifloor large warehouse',
  price: '$ 5,000,000',
  type: 'warehouse',
  bed: 5,
  bath: 4,
  size: 700,
  position: {
    lat: 37.36399747905774,
    lng: -122.10465384268522,
  },
}, {
  address: '700 Jose Ave, Sunnyvale, CA',
  description: '3 storey townhouse with 2 car garage',
  price: '$ 3,850,000',
  type: 'building',
  bed: 4,
  bath: 4,
  size: 600,
  position: {
    lat: 37.38343706184458,
    lng: -122.02340436985183,
  },
}, {
  address: '868 Will Ct, Cupertino, CA',
  description: 'Single family house in great school zone',
  price: '$ 2,500,000',
  type: 'home',
  bed: 3,
  bath: 2,
  size: 100,
  position: {
    lat: 37.34576403052,
    lng: -122.04455090047453,
  },
}, {
  address: '655 Haylee St, Santa Clara, CA',
  description: '2 storey store with large storage room',
  price: '$ 2,500,000',
  type: 'store-alt',
  bed: 3,
  bath: 2,
  size: 450,
  position: {
    lat: 37.362863347890716,
    lng: -121.97802139023555,
  },
}, {
  address: '2019 Natasha Dr, San Jose, CA',
  description: 'Single family house',
  price: '$ 2,325,000',
  type: 'home',
  bed: 4,
  bath: 3.5,
  size: 500,
  position: {
    lat: 37.41391636421949,
    lng: -121.94592071575907,
  },
}];

initMap();
index.ts

JavaScript

async function initMap() {
  // Request needed libraries.
  const { Map } = await google.maps.importLibrary("maps");
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker");
  const center = { lat: 37.43238031167444, lng: -122.16795397128632 };
  const map = new Map(document.getElementById("map"), {
    zoom: 11,
    center,
    mapId: "4504f8b37365c3d0",
  });

  for (const property of properties) {
    const AdvancedMarkerElement = new google.maps.marker.AdvancedMarkerElement({
      map,
      content: buildContent(property),
      position: property.position,
      title: property.description,
    });

    AdvancedMarkerElement.addListener("click", () => {
      toggleHighlight(AdvancedMarkerElement, property);
    });
  }
}

function toggleHighlight(markerView, property) {
  if (markerView.content.classList.contains("highlight")) {
    markerView.content.classList.remove("highlight");
    markerView.zIndex = null;
  } else {
    markerView.content.classList.add("highlight");
    markerView.zIndex = 1;
  }
}

function buildContent(property) {
  const content = document.createElement("div");

  content.classList.add("property");
  content.innerHTML = `
    <div class="icon">
        <i aria-hidden="true" class="fa fa-icon fa-${property.type}" title="${property.type}"></i>
        <span class="fa-sr-only">${property.type}</span>
    </div>
    <div class="details">
        <div class="price">${property.price}</div>
        <div class="address">${property.address}</div>
        <div class="features">
        <div>
            <i aria-hidden="true" class="fa fa-bed fa-lg bed" title="bedroom"></i>
            <span class="fa-sr-only">bedroom</span>
            <span>${property.bed}</span>
        </div>
        <div>
            <i aria-hidden="true" class="fa fa-bath fa-lg bath" title="bathroom"></i>
            <span class="fa-sr-only">bathroom</span>
            <span>${property.bath}</span>
        </div>
        <div>
            <i aria-hidden="true" class="fa fa-ruler fa-lg size" title="size"></i>
            <span class="fa-sr-only">size</span>
            <span>${property.size} ft<sup>2</sup></span>
        </div>
        </div>
    </div>
    `;
  return content;
}

const properties = [
  {
    address: "215 Emily St, MountainView, CA",
    description: "Single family house with modern design",
    price: "$ 3,889,000",
    type: "home",
    bed: 5,
    bath: 4.5,
    size: 300,
    position: {
      lat: 37.50024109655184,
      lng: -122.28528451834352,
    },
  },
  {
    address: "108 Squirrel Ln &#128063;, Menlo Park, CA",
    description: "Townhouse with friendly neighbors",
    price: "$ 3,050,000",
    type: "building",
    bed: 4,
    bath: 3,
    size: 200,
    position: {
      lat: 37.44440882321596,
      lng: -122.2160620727,
    },
  },
  {
    address: "100 Chris St, Portola Valley, CA",
    description: "Spacious warehouse great for small business",
    price: "$ 3,125,000",
    type: "warehouse",
    bed: 4,
    bath: 4,
    size: 800,
    position: {
      lat: 37.39561833718522,
      lng: -122.21855116258479,
    },
  },
  {
    address: "98 Aleh Ave, Palo Alto, CA",
    description: "A lovely store on busy road",
    price: "$ 4,225,000",
    type: "store-alt",
    bed: 2,
    bath: 1,
    size: 210,
    position: {
      lat: 37.423928529779644,
      lng: -122.1087629822001,
    },
  },
  {
    address: "2117 Su St, MountainView, CA",
    description: "Single family house near golf club",
    price: "$ 1,700,000",
    type: "home",
    bed: 4,
    bath: 3,
    size: 200,
    position: {
      lat: 37.40578635332598,
      lng: -122.15043378466069,
    },
  },
  {
    address: "197 Alicia Dr, Santa Clara, CA",
    description: "Multifloor large warehouse",
    price: "$ 5,000,000",
    type: "warehouse",
    bed: 5,
    bath: 4,
    size: 700,
    position: {
      lat: 37.36399747905774,
      lng: -122.10465384268522,
    },
  },
  {
    address: "700 Jose Ave, Sunnyvale, CA",
    description: "3 storey townhouse with 2 car garage",
    price: "$ 3,850,000",
    type: "building",
    bed: 4,
    bath: 4,
    size: 600,
    position: {
      lat: 37.38343706184458,
      lng: -122.02340436985183,
    },
  },
  {
    address: "868 Will Ct, Cupertino, CA",
    description: "Single family house in great school zone",
    price: "$ 2,500,000",
    type: "home",
    bed: 3,
    bath: 2,
    size: 100,
    position: {
      lat: 37.34576403052,
      lng: -122.04455090047453,
    },
  },
  {
    address: "655 Haylee St, Santa Clara, CA",
    description: "2 storey store with large storage room",
    price: "$ 2,500,000",
    type: "store-alt",
    bed: 3,
    bath: 2,
    size: 450,
    position: {
      lat: 37.362863347890716,
      lng: -121.97802139023555,
    },
  },
  {
    address: "2019 Natasha Dr, San Jose, CA",
    description: "Single family house",
    price: "$ 2,325,000",
    type: "home",
    bed: 4,
    bath: 3.5,
    size: 500,
    position: {
      lat: 37.41391636421949,
      lng: -121.94592071575907,
    },
  },
];

initMap();
index.js

CSS

:root {
  --building-color: #FF9800;
  --house-color: #0288D1;
  --shop-color: #7B1FA2;
  --warehouse-color: #558B2F;
}

/*
 * Optional: Makes the sample page fill the window.
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

/*
 * Always set the map height explicitly to define the size of the div element
 * that contains the map.
 */
#map {
  height: 100%;
  width: 100%;
}

/*
 * Property styles in unhighlighted state.
 */
.property {
  align-items: center;
  background-color: #FFFFFF;
  border-radius: 50%;
  color: #263238;
  display: flex;
  font-size: 14px;
  gap: 15px;
  height: 30px;
  justify-content: center;
  padding: 4px;
  position: relative;
  position: relative;
  transition: all 0.3s ease-out;
  width: 30px;
}

.property::after {
  border-left: 9px solid transparent;
  border-right: 9px solid transparent;
  border-top: 9px solid #FFFFFF;
  content: "";
  height: 0;
  left: 50%;
  position: absolute;
  top: 95%;
  transform: translate(-50%, 0);
  transition: all 0.3s ease-out;
  width: 0;
  z-index: 1;
}

.property .icon {
  align-items: center;
  display: flex;
  justify-content: center;
  color: #FFFFFF;
}

.property .icon svg {
  height: 20px;
  width: auto;
}

.property .details {
  display: none;
  flex-direction: column;
  flex: 1;
}

.property .address {
  color: #9E9E9E;
  font-size: 10px;
  margin-bottom: 10px;
  margin-top: 5px;
}

.property .features {
  align-items: flex-end;
  display: flex;
  flex-direction: row;
  gap: 10px;
}

.property .features > div {
  align-items: center;
  background: #F5F5F5;
  border-radius: 5px;
  border: 1px solid #ccc;
  display: flex;
  font-size: 10px;
  gap: 5px;
  padding: 5px;
}

/*
 * Property styles in highlighted state.
 */
.property.highlight {
  background-color: #FFFFFF;
  border-radius: 8px;
  box-shadow: 10px 10px 5px rgba(0, 0, 0, 0.2);
  height: 80px;
  padding: 8px 15px;
  width: auto;
}

.property.highlight::after {
  border-top: 9px solid #FFFFFF;
}

.property.highlight .details {
  display: flex;
}

.property.highlight .icon svg {
  width: 50px;
  height: 50px;
}

.property .bed {
  color: #FFA000;
}

.property .bath {
  color: #03A9F4;
}

.property .size {
  color: #388E3C;
}

/*
 * House icon colors.
 */
.property.highlight:has(.fa-house) .icon {
  color: var(--house-color);
}

.property:not(.highlight):has(.fa-house) {
  background-color: var(--house-color);
}

.property:not(.highlight):has(.fa-house)::after {
  border-top: 9px solid var(--house-color);
}

/*
 * Building icon colors.
 */
.property.highlight:has(.fa-building) .icon {
  color: var(--building-color);
}

.property:not(.highlight):has(.fa-building) {
  background-color: var(--building-color);
}

.property:not(.highlight):has(.fa-building)::after {
  border-top: 9px solid var(--building-color);
}

/*
 * Warehouse icon colors.
 */
.property.highlight:has(.fa-warehouse) .icon {
  color: var(--warehouse-color);
}

.property:not(.highlight):has(.fa-warehouse) {
  background-color: var(--warehouse-color);
}

.property:not(.highlight):has(.fa-warehouse)::after {
  border-top: 9px solid var(--warehouse-color);
}

/*
 * Shop icon colors.
 */
.property.highlight:has(.fa-shop) .icon {
  color: var(--shop-color);
}

.property:not(.highlight):has(.fa-shop) {
  background-color: var(--shop-color);
}

.property:not(.highlight):has(.fa-shop)::after {
  border-top: 9px solid var(--shop-color);
}

style.css

HTML

<html>
  <head>
    <title>Advanced Markers with HTML</title>

    <script src="https://use.fontawesome.com/releases/v6.2.0/js/all.js"></script>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="map"></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>
index.html

ลองใช้ตัวอย่าง

เครื่องหมายแบบเคลื่อนไหว

ตัวอย่างนี้จะสร้าง "การตีกลับ" แบบดั้งเดิม ภาพเคลื่อนไหวโดยใช้ CSS และ ตัวทำเครื่องหมายขั้นสูง ใน IntersectionObserver จะเพิ่ม รูปแบบ CSS ของ drop IntersectionObserverจะเห็นเมื่อแต่ละเครื่องหมายป้อน วิวพอร์ต แล้วเพิ่มรูปแบบ จากนั้น Listener เหตุการณ์ animationend ที่ ฟังก์ชัน createMarker() ที่เพิ่มลงในเครื่องหมายแต่ละตัวจะนำรูปแบบออก

ดูแหล่งที่มา

TypeScript

/**
   * Returns a random lat lng position within the map bounds.
   * @param {!google.maps.Map} map
   * @return {!google.maps.LatLngLiteral}
   */
 function getRandomPosition(map) {
    const bounds = map.getBounds();
    const minLat = bounds.getSouthWest().lat();
    const minLng = bounds.getSouthWest().lng();
    const maxLat = bounds.getNorthEast().lat();
    const maxLng = bounds.getNorthEast().lng();

    const latRange = maxLat - minLat;

    // Note: longitude can span from a positive longitude in the west to a
    // negative one in the east. e.g. 150lng (150E) <-> -30lng (30W) is a large
    // span that covers the whole USA.
    let lngRange = maxLng - minLng;
    if (maxLng < minLng) {
      lngRange += 360;
    }

    return {
      lat: minLat + Math.random() * latRange,
      lng: minLng + Math.random() * lngRange,
    };
  }

  const total = 100;
  const intersectionObserver = new IntersectionObserver((entries) => {
    for (const entry of entries) {
      if (entry.isIntersecting) {
        entry.target.classList.add('drop');
        intersectionObserver.unobserve(entry.target);
      }
    }
  });

  async function initMap(): Promise<void> {
    // Request needed libraries.
    const { Map } = await google.maps.importLibrary("maps") as google.maps.MapsLibrary;
    const { AdvancedMarkerElement } = await google.maps.importLibrary("marker") as google.maps.MarkerLibrary;

    const position = {lat: 37.4242011827985, lng: -122.09242296450893};

    const map = new Map(document.getElementById("map") as HTMLElement, {
      zoom: 14,
      center: position,
      mapId: '4504f8b37365c3d0',
    });

    // Create 100 markers to animate.
    google.maps.event.addListenerOnce(map, 'idle', () => {
      for (let i = 0; i < 100; i++) {
        createMarker(map, AdvancedMarkerElement);
      }
    });

    // Add a button to reset the example.
    const controlDiv = document.createElement("div");
    const controlUI = document.createElement("button");

    controlUI.classList.add("ui-button");
    controlUI.innerText = "Reset the example";
    controlUI.addEventListener("click", () => {
      // Reset the example by reloading the map iframe.
      refreshMap();
    });
    controlDiv.appendChild(controlUI);
    map.controls[google.maps.ControlPosition.TOP_CENTER].push(controlDiv);
  }

  function createMarker(map, AdvancedMarkerElement) {    
    const advancedMarker = new AdvancedMarkerElement({
      position: getRandomPosition(map),
      map: map,
    });
    const content = advancedMarker.content as HTMLElement;
    content.style.opacity = '0'; 
    content.addEventListener('animationend', (event) => { 
      content.classList.remove('drop');
      content.style.opacity = '1';
    });
    const time = 2 + Math.random(); // 2s delay for easy to see the animation
    content.style.setProperty('--delay-time', time +'s');
    intersectionObserver.observe(content);
  }

  function refreshMap() {
      // Refresh the map.
      const mapContainer = document.getElementById('mapContainer');
      const map = document.getElementById('map');
      map!.remove();
      const mapDiv = document.createElement('div');
      mapDiv.id = 'map';
      mapContainer!.appendChild(mapDiv);
      initMap();
  }

initMap();
index.ts

JavaScript

/**
 * Returns a random lat lng position within the map bounds.
 * @param {!google.maps.Map} map
 * @return {!google.maps.LatLngLiteral}
 */
function getRandomPosition(map) {
  const bounds = map.getBounds();
  const minLat = bounds.getSouthWest().lat();
  const minLng = bounds.getSouthWest().lng();
  const maxLat = bounds.getNorthEast().lat();
  const maxLng = bounds.getNorthEast().lng();
  const latRange = maxLat - minLat;
  // Note: longitude can span from a positive longitude in the west to a
  // negative one in the east. e.g. 150lng (150E) <-> -30lng (30W) is a large
  // span that covers the whole USA.
  let lngRange = maxLng - minLng;

  if (maxLng < minLng) {
    lngRange += 360;
  }
  return {
    lat: minLat + Math.random() * latRange,
    lng: minLng + Math.random() * lngRange,
  };
}

const total = 100;
const intersectionObserver = new IntersectionObserver((entries) => {
  for (const entry of entries) {
    if (entry.isIntersecting) {
      entry.target.classList.add("drop");
      intersectionObserver.unobserve(entry.target);
    }
  }
});

async function initMap() {
  // Request needed libraries.
  const { Map } = await google.maps.importLibrary("maps");
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker");
  const position = { lat: 37.4242011827985, lng: -122.09242296450893 };
  const map = new Map(document.getElementById("map"), {
    zoom: 14,
    center: position,
    mapId: "4504f8b37365c3d0",
  });

  // Create 100 markers to animate.
  google.maps.event.addListenerOnce(map, "idle", () => {
    for (let i = 0; i < 100; i++) {
      createMarker(map, AdvancedMarkerElement);
    }
  });

  // Add a button to reset the example.
  const controlDiv = document.createElement("div");
  const controlUI = document.createElement("button");

  controlUI.classList.add("ui-button");
  controlUI.innerText = "Reset the example";
  controlUI.addEventListener("click", () => {
    // Reset the example by reloading the map iframe.
    refreshMap();
  });
  controlDiv.appendChild(controlUI);
  map.controls[google.maps.ControlPosition.TOP_CENTER].push(controlDiv);
}

function createMarker(map, AdvancedMarkerElement) {
  const advancedMarker = new AdvancedMarkerElement({
    position: getRandomPosition(map),
    map: map,
  });
  const content = advancedMarker.content;

  content.style.opacity = "0";
  content.addEventListener("animationend", (event) => {
    content.classList.remove("drop");
    content.style.opacity = "1";
  });

  const time = 2 + Math.random(); // 2s delay for easy to see the animation

  content.style.setProperty("--delay-time", time + "s");
  intersectionObserver.observe(content);
}

function refreshMap() {
  // Refresh the map.
  const mapContainer = document.getElementById("mapContainer");
  const map = document.getElementById("map");

  map.remove();

  const mapDiv = document.createElement("div");

  mapDiv.id = "map";
  mapContainer.appendChild(mapDiv);
  initMap();
}

initMap();
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;
}

/* set the default transition time */
:root {
  --delay-time: .5s;
}

#map {
  height: 100%;
}

#mapContainer {
  height: 100%;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

@keyframes drop {
  0% {
    transform: translateY(-200px) scaleY(0.9);
    opacity: 0;
  }
  5% {
    opacity: 0.7;
  }
  50% {
    transform: translateY(0px) scaleY(1);
    opacity: 1;
  }
  65% {
    transform: translateY(-17px) scaleY(0.9);
    opacity: 1;
  }
  75% {
    transform: translateY(-22px) scaleY(0.9);
    opacity: 1;
  }
  100% {
    transform: translateY(0px) scaleY(1);
    opacity: 1;
  }
}
.drop {
  animation: drop 0.3s linear forwards var(--delay-time);
}

.ui-button {
  background-color: #fff;
  border: 0;
  border-radius: 2px;
  box-shadow: 0 1px 4px -1px rgba(0, 0, 0, 0.3);
  margin: 10px;
  padding: 0 0.5em;
  font: 400 18px Roboto, Arial, sans-serif;
  overflow: hidden;
  height: 40px;
  cursor: pointer;
}

.ui-button:hover {
  background: rgb(235, 235, 235);
}

style.css

HTML

<html>
  <head>
    <title>Advanced Markers CSS Animation</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="mapContainer">
      <div id="map" style="height: 100%"></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>
index.html

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