使标记可点击且可访问

当标记可点击或可拖动时，可以响应键盘和鼠标输入。您可以使用鼠标或键盘在标记之间移动，以及在标记可拖动的情况下移动标记。title 选项中指定的文本对屏幕阅读器可见。

如需将标记设为可点击，请添加点击事件处理脚本。
如需使标记可拖动，请将 AdvancedMarkerView.draggable 属性设置为 true。
如要为标记设置描述性文本，请使用 AdvancedMarkerView.title 选项。

将标记设置为可点击

以下示例展示了一个带有五个可点击且可聚焦标记的地图：

如要使用键盘浏览标记，请执行以下操作：

使用 Tab 键将焦点移至第一个标记；如果同一地图上有多个标记，可使用箭头键在标记之间循环切换。
如果标记可点击，请按 Enter 键进行“点击”。如果某个标记包含信息窗口，您可以通过点击或按 Enter 键或空格键将其打开。关闭信息窗口后，焦点将返回到关联的标记。
再按一次 Tab 键，可以继续在其余地图控件之间移动。

查看代码

TypeScript

function initMap() {
    const map = new google.maps.Map(document.getElementById("map") as HTMLElement, {
        zoom: 12,
        center: { lat: 34.84555, lng: -111.8035 },
        mapId: '4504f8b37365c3d0',
    });

    // Set LatLng and title text for the markers. The first marker (Boynton Pass)
    // receives the initial focus when tab is pressed. Use arrow keys to
    // move between markers; press tab again to cycle through the map controls.
    const tourStops = [
        {
            position: { lat: 34.8791806, lng: -111.8265049 },
            title: "Boynton Pass"
        },
        {
            position: { lat: 34.8559195, lng: -111.7988186 },
            title: "Airport Mesa"
        },
        {
            position: { lat: 34.832149, lng: -111.7695277 },
            title: "Chapel of the Holy Cross"
        },
        {
            position: { lat: 34.823736, lng: -111.8001857 },
            title: "Red Rock Crossing"
        },
        {
            position: { lat: 34.800326, lng: -111.7665047 },
            title: "Bell Rock"
        },
    ];

    // Create an info window to share between markers.
    const infoWindow = new google.maps.InfoWindow();

    // Create the markers.
    tourStops.forEach(({position, title}, i) => {
        const pinView = new google.maps.marker.PinView({
            glyph: `${i + 1}`,
        });

        const marker = new google.maps.marker.AdvancedMarkerView({
            position,
            map,
            title: `${i + 1}. ${title}`,
            content: pinView.element,
        });

        // Add a click listener for each marker, and set up the info window.
        marker.addListener('click', ({ domEvent, latLng }) => {
            const { target } = domEvent;
            infoWindow.close();
            infoWindow.setContent(marker.title);
            infoWindow.open(marker.map, marker);
        });
    });
}

declare global {
    interface Window {
        initMap: () => void;
    }
}

window.initMap = initMap;index.ts

JavaScript

function initMap() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 12,
    center: { lat: 34.84555, lng: -111.8035 },
    mapId: "4504f8b37365c3d0",
  });
  // Set LatLng and title text for the markers. The first marker (Boynton Pass)
  // receives the initial focus when tab is pressed. Use arrow keys to
  // move between markers; press tab again to cycle through the map controls.
  const tourStops = [
    {
      position: { lat: 34.8791806, lng: -111.8265049 },
      title: "Boynton Pass",
    },
    {
      position: { lat: 34.8559195, lng: -111.7988186 },
      title: "Airport Mesa",
    },
    {
      position: { lat: 34.832149, lng: -111.7695277 },
      title: "Chapel of the Holy Cross",
    },
    {
      position: { lat: 34.823736, lng: -111.8001857 },
      title: "Red Rock Crossing",
    },
    {
      position: { lat: 34.800326, lng: -111.7665047 },
      title: "Bell Rock",
    },
  ];
  // Create an info window to share between markers.
  const infoWindow = new google.maps.InfoWindow();

  // Create the markers.
  tourStops.forEach(({ position, title }, i) => {
    const pinView = new google.maps.marker.PinView({
      glyph: `${i + 1}`,
    });
    const marker = new google.maps.marker.AdvancedMarkerView({
      position,
      map,
      title: `${i + 1}. ${title}`,
      content: pinView.element,
    });

    // Add a click listener for each marker, and set up the info window.
    marker.addListener("click", ({ domEvent, latLng }) => {
      const { target } = domEvent;

      infoWindow.close();
      infoWindow.setContent(marker.title);
      infoWindow.open(marker.map, marker);
    });
  });
}

window.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;
}

[class$=api-load-alpha-banner] {
  display: none;
}
style.css

HTML

<html>
  <head>
    <title>Advanced Marker Accessibility</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>

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

    <!--
      The `defer` attribute causes the callback to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises.
      See https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&libraries=marker&v=beta"
      defer
    ></script>
  </body>
</html>index.html

试用示例

Stackblitz.com CodeSandbox.io JSFiddle.net GitPod.io Google Cloud Shell

若要使标记不再可点击，请移除点击事件监听器：

// Adding the listener.
const clickListener = markerView.addListener('click', () => {...});

// Removing the listener.
google.maps.event.removeListener(clickListener);

使标记可拖动

启用可拖动性后，用户可以使用鼠标或箭头键拖动地图上的标记。如需使标记可拖动，请将 AdvancedMarkerView.draggable 属性设置为 true。

以下示例地图展示了一个可拖动的标记，该标记会在拖动完成时显示其更新后的位置（触发 dragend 事件）：

如要使用键盘拖动标记，请执行以下操作：

持续按 Tab 键，直至标记对焦。
使用箭头键移动到所需的标记。
如要启用拖动功能，请按 Option + Space 或 Option + Enter (Mac)、ALT + Space 或 Alt + Enter (Windows)。
使用箭头键可移动标记。
要将标记放在新位置，请按空格键或 Enter。此操作也将关闭拖动功能。
如需关闭拖动功能并将标记移回之前的位置，请按 Esc。