在这里你可以找到一个如何删除标记的例子:

https://developers.google.com/maps/documentation/javascript/examples/marker-remove?hl=es

// Add a marker to the map and push to the array.
function addMarker(location) {
  var marker = new google.maps.Marker({
    position: location,
    map: map
  });
  markers.push(marker);
}

// Sets the map on all markers in the array.
function setAllMap(map) {
  for (var i = 0; i < markers.length; i++) {
    markers[i].setMap(map);
   }
}

// Removes the markers from the map, but keeps them in the array.
function clearMarkers() {
  setAllMap(null);
}

// Deletes all markers in the array by removing references to them.
function deleteMarkers() {
  clearMarkers();
  markers = [];
}

在两个答案中发布的“set_map”函数似乎不再在谷歌Maps v3 API中工作。

我想知道发生了什么事

更新:

似乎谷歌改变了他们的API，使“set_map”不是“setMap”。

http://code.google.com/apis/maps/documentation/v3/reference.html

只需要走过标记并将它们从map中移除，然后是空的maps标记数组:

var markers = map.markers;
for(var i = 0; i < markers.length; i++) {
    markers[i].setMap(null);
}
map.markers = [];

在这里你可以找到一个如何删除标记的例子:

https://developers.google.com/maps/documentation/javascript/examples/marker-remove?hl=es

// Add a marker to the map and push to the array.
function addMarker(location) {
  var marker = new google.maps.Marker({
    position: location,
    map: map
  });
  markers.push(marker);
}

// Sets the map on all markers in the array.
function setAllMap(map) {
  for (var i = 0; i < markers.length; i++) {
    markers[i].setMap(map);
   }
}

// Removes the markers from the map, but keeps them in the array.
function clearMarkers() {
  setAllMap(null);
}

// Deletes all markers in the array by removing references to them.
function deleteMarkers() {
  clearMarkers();
  markers = [];
}

最干净的方法是遍历地图的所有功能。标记(以及多边形、折线等)存储在地图的数据层中。

function removeAllMarkers() {
  map.data.forEach((feature) => {
    feature.getGeometry().getType() === 'Point' ? map.data.remove(feature) : null
  });
}

在通过绘图管理器添加标记的情况下，最好创建一个全局标记数组，或者在创建时将标记推入数据层，如下所示:

google.maps.event.addListener(drawingManager, 'overlaycomplete', (e) => {
    var newShape = e.overlay;
    newShape.type = e.type;

    if (newShape.type === 'marker') {
      var pos = newShape.getPosition()
      map.data.add({ geometry: new google.maps.Data.Point(pos) });

      // remove from drawing layer
      newShape.setMap(null);
    }
  });

我推荐第二种方法，因为它允许您稍后使用其他google.maps.data类方法。

我不知道为什么，但是，设置setMap(null)到我的标记并不适用于我，当我使用DirectionsRenderer。

在我的情况下，我必须调用setMap(null)到我的DirectionsRenderer以及。

就像这样:

var directionsService = new google.maps.DirectionsService();
var directionsDisplay = new google.maps.DirectionsRenderer();

if (map.directionsDisplay) {
    map.directionsDisplay.setMap(null);
}

map.directionsDisplay = directionsDisplay;

var request = {
    origin: start,
    destination: end,
    travelMode: google.maps.TravelMode.DRIVING
};

directionsDisplay.setMap(map);
directionsService.route(request, function (result, status) {
    if (status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(result);
    }
});