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 = [];
}

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 = [];

在新版本v3上，他们建议保持在数组中。如下。

参见overlay-overview中的示例。

var map;
var markersArray = [];

function initialize() {
  var haightAshbury = new google.maps.LatLng(37.7699298, -122.4469157);
  var mapOptions = {
    zoom: 12,
    center: haightAshbury,
    mapTypeId: google.maps.MapTypeId.TERRAIN
  };
  map =  new google.maps.Map(document.getElementById("map_canvas"), mapOptions);

  google.maps.event.addListener(map, 'click', function(event) {
    addMarker(event.latLng);
  });
}

function addMarker(location) {
  marker = new google.maps.Marker({
    position: location,
    map: map
  });
  markersArray.push(marker);
}

// Removes the overlays from the map, but keeps them in the array
function clearOverlays() {
  if (markersArray) {
    for (i in markersArray) {
      markersArray[i].setMap(null);
    }
  }
}

// Shows any overlays currently in the array
function showOverlays() {
  if (markersArray) {
    for (i in markersArray) {
      markersArray[i].setMap(map);
    }
  }
}

// Deletes all markers in the array by removing references to them
function deleteOverlays() {
  if (markersArray) {
    for (i in markersArray) {
      markersArray[i].setMap(null);
    }
    markersArray.length = 0;
  }
}

我找到了一个简单的解决方法(我认为):

var marker = new google.maps.Marker();

function Clear(){
     marker.setMap(null);
}

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 = [];
}

这是YingYang于2014年3月11日15:049在对用户原始问题的原始回复下发布的所有解决方案中最简单的一个

2.5年后，我在谷歌地图v3.18中使用了他的相同解决方案，它就像一个魅力

markersArray.push(newMarker) ;
while(markersArray.length) { markersArray.pop().setMap(null); }

// No need to clear the array after that.