javascript - 如何使用 Google Maps Javascript API 在多边形顶部添加标记？

Question

我正在使用 Google Maps Javascript API，并且定义了一个多边形并将其附加到 map :

const region = new google.maps.Polygon({
  map: map,
  paths: [
    { lat: 40.5577151228437, lng: -74.15980859374997 },
    { lat: 40.599436503265856, lng: -74.27516503906247 },
    { lat: 40.67030312529891, lng: -74.25319238281247 },
    { lat: 40.72548139969253, lng: -74.26079167357881 },
  ],
});

我有一个点击处理程序，当用户点击时，它会在其上添加一个标记:

  google.maps.event.addListener(map, 'click', function (e) {
    const marker = new google.maps.Marker({
      map: map,
      position: e.latLng,
    });
  });

当我单击多边形外部的区域时，我可以看到标记，但当我单击多边形内部时，我看不到标记。

我尝试过对每个 zIndex 进行硬编码，但没有成功。有什么想法吗？

Answer 1

两个选项:

1. 向多边形添加点击监听器

google.maps.event.addListener(region, 'click', function (e) {
    const marker = new google.maps.Marker({
      map: map,
      position: e.latLng,
    });
  });

proof of concept fiddle

function initialize() {
  var map = new google.maps.Map(
    document.getElementById("map_canvas"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
  const region = new google.maps.Polygon({
    map: map,
    paths: [
      { lat: 40.5577151228437, lng: -74.15980859374997 },
      { lat: 40.599436503265856, lng: -74.27516503906247 },
      { lat: 40.67030312529891, lng: -74.25319238281247 },
      { lat: 40.72548139969253, lng: -74.26079167357881 },
    ],
  });
  var bounds = new google.maps.LatLngBounds();
  for (var i = 0; i < region.getPath().getLength(); i++) {
    bounds.extend(region.getPath().getAt(i));
  }
  map.fitBounds(bounds);

  function addMarker(e) {
    const marker = new google.maps.Marker({
      map: map,
      position: e.latLng,
    });
  }
  google.maps.event.addListener(map, 'click', addMarker);
  google.maps.event.addListener(region, 'click', addMarker);
}
google.maps.event.addDomListener(window, "load", initialize);

html,
body,
#map_canvas {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_canvas"></div>

使多边形不捕获点击(clickable: false)；

const region = new google.maps.Polygon({
  map: map,
  clickable: false,
  paths: [
    { lat: 40.5577151228437, long: -74.15980859374997 },
    { lat: 40.599436503265856, long: -74.27516503906247 },
    { lat: 40.67030312529891, long: -74.25319238281247 },
    { lat: 40.72548139969253, long: -74.26079167357881 },
  ],
}

proof of concept fiddle

function initialize() {
  var map = new google.maps.Map(
    document.getElementById("map_canvas"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
  const region = new google.maps.Polygon({
    map: map,
    clickable: false,
    paths: [
      { lat: 40.5577151228437, lng: -74.15980859374997 },
      { lat: 40.599436503265856, lng: -74.27516503906247 },
      { lat: 40.67030312529891, lng: -74.25319238281247 },
      { lat: 40.72548139969253, lng: -74.26079167357881 },
    ],
  });
  var bounds = new google.maps.LatLngBounds();
  for (var i = 0; i < region.getPath().getLength(); i++) {
    bounds.extend(region.getPath().getAt(i));
  }
  map.fitBounds(bounds);
  google.maps.event.addListener(map, 'click', function(e) {
    const marker = new google.maps.Marker({
      map: map,
      position: e.latLng,
    });
  });
}
google.maps.event.addDomListener(window, "load", initialize);

html,
body,
#map_canvas {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_canvas"></div>