地点详情元素

PlaceDetailsElement 是一个 HTML 元素，用于呈现地点的详细信息。配置 gmp-place-details 元素的方法有两种：

此页面上的示例会在用户点击地图时呈现“地点详情”元素。如需在地图上添加地点详情，请向 HTML 页面添加 gmp-place-details 元素。分别使用 size 和 slot 属性设置其大小和位置。在以下示例中，它嵌套在 gmp-map 元素中，其中 size 设置为 medium，slot 设置为 control-inline-start-block-start。

<gmp-map center="-37.813,144.963" zoom="2" map-id="DEMO_MAP_ID">
  <gmp-place-details
    size="medium"
    slot="control-inline-start-block-start"></gmp-place-details>
  <gmp-advanced-marker></gmp-advanced-marker>
</gmp-map>

querySelector 用于选择要与之互动的每个网页元素：

const map = document.querySelector('gmp-map');
const placeDetails = document.querySelector('gmp-place-details');
const marker = document.querySelector('gmp-advanced-marker');

以下代码段中的事件处理脚本会根据用户点击地图的位置呈现地点详情元素：

// Add an event listener to handle map clicks.
map.innerMap.addListener('click', async (event) => {
  marker.position = null;
  event.stop();
  if (event.placeId) {
    // The user clicked a point on the map that has a Place ID (for example a
    // POI).
    await placeDetails.configureFromPlace({id: event.placeId});
  } else {
    // The user clicked an area of the map with no Place ID.
    await placeDetails.configureFromLocation(event.latLng);
  }
  // Show the marker at the selected place.
  marker.position = placeDetails.place.location;
  marker.style.display = 'block';
});

查看完整代码示例

JavaScript

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */
// Use querySelector to select elements for interaction.
const map = document.querySelector('gmp-map');
const placeDetails = document.querySelector('gmp-place-details');
const marker = document.querySelector('gmp-advanced-marker');

async function init() {
  // Import the needed libraries.
  await google.maps.importLibrary('places');
  await google.maps.importLibrary('marker');

  // Calls the geolocation helper function to center the map on the current
  // device location.
  findCurrentLocation();

  // Hide the map type control.
  map.innerMap.setOptions({mapTypeControl: false});

  // Add an event listener to handle map clicks.
  map.innerMap.addListener('click', async (event) => {
    marker.position = null;
    event.stop();
    if (event.placeId) {
      // Fire when the user clicks a POI.
      await placeDetails.configureFromPlace({id: event.placeId});
    } else {
      // Fire when the user clicks the map (not on a POI).
      await placeDetails.configureFromLocation(event.latLng);
    }
    // Show the marker at the selected place.
    marker.position = placeDetails.place.location;
    marker.style.display = 'block';
  });
}

// Helper function for geolocation.
async function findCurrentLocation() {
  const {LatLng} = await google.maps.importLibrary('core');
  if (navigator.geolocation) {
    navigator.geolocation.getCurrentPosition(
        (position) => {
          const pos =
              new LatLng(position.coords.latitude, position.coords.longitude);
          map.innerMap.panTo(pos);
          map.innerMap.setZoom(16);
        },
        () => {
          console.log('The Geolocation service failed.');
          map.innerMap.setZoom(16);
        },
    );
  } else {
    console.log('Your browser doesn\'t support geolocation');
    map.innerMap.setZoom(16);
  }
}

init();

CSS

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

body {
  display: flex;
  flex-direction: column;
  font-family: Arial, Helvetica, sans-serif;
}

h1 {
  font-size: 16px;
  text-align: center;
}

gmp-map {
  box-sizing: border-box;
  padding: 0 20px 20px;
  width: 100%;
}

gmp-place-details {
  background-color: #fff;
  border-radius: 8px;
  margin: 20px;
  width: 400px;
}


gmp-advanced-marker {
    display: none;
}

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Click on the map to view place details</title>
    <meta charset="utf-8">
    <link rel="stylesheet" href="style.css">
  </head>
  <body>
    <h1>Click on the map to view place details</h1>
    <gmp-map center="-37.813,144.963" zoom="2" map-id="DEMO_MAP_ID">
      <gmp-place-details
        size="large"
        slot="control-inline-start-block-start"></gmp-place-details>
      <gmp-advanced-marker></gmp-advanced-marker>
    </gmp-map>
    <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: "YOUR_API_KEY",
        v: "alpha"
      });
    </script>
  </body>
</html>