javascript - this.remove 不是删除 Google Maps Overlay 时的函数

Question

我在谷歌地图上放置了一个叠加层:

function CustomerMarker(map) {
    this.Map = map;
    this.setMap(map);

}

    GoogleMap = new google.maps.Map(document.getElementById("map"), {
        zoom: 16,
        canZoom: false,
        center: { lat: lat, lng: lng },
        mapTypeControl: false,
        streetViewControl: false,
        scaleControl: false,
        clickableIcons: false
    });

    CustomMarker.prototype = new google.maps.OverlayView();
    CustomMarker.prototype.onAdd = function () {
        //Some code
    };
    CustomMarker.prototype.draw = function () {
        //Some code
    };

    CustomMarker = new CustomMarker(GoogleMap);

效果很好，叠加层出现了，但是当我尝试删除它时出现了问题

CustomMarker.setMap(null)

我得到一个错误，标记仍然存在

Error: this.remove is not a function
pz@https://maps.googleapis.com/maps-api-v3/api/js/30/1/overlay.js:1:251
rk@https://maps.googleapis.com/maps-api-v3/api/js/30/1/overlay.js:2:476
_.pg.prototype.map_changed/<@https://maps.googleapis.com/maps/api
/js?key=AIzaSyBCiIPv6fgrRVn3veTJeP6ihfhrw8AXwbY:125:662
_.G@https://maps.googleapis.com/maps/api/js?key=AIzaSyBCiIPv6fgrRVn3veTJeP6ihfhrw8AXwbY:51:447
_.pg.prototype.map_changed@https://maps.googleapis.com/maps/api/js?key=AIzaSyBCiIPv6fgrRVn3veTJeP6ihfhrw8AXwbY:125:636
Db@https://maps.googleapis.com/maps/api/js?key=AIzaSyBCiIPv6fgrRVn3veTJeP6ihfhrw8AXwbY:37:103
_.k.set@https://maps.googleapis.com/maps/api/js?key=AIzaSyBCiIPv6fgrRVn3veTJeP6ihfhrw8AXwbY:101:728
_.jd/<@https://maps.googleapis.com/maps/api/js?key=AIzaSyBCiIPv6fgrRVn3veTJeP6ihfhrw8AXwbY:55:317

Answer 1

documentation for OverlayView状态:

You must implement three methods: onAdd(), draw(), and onRemove().

我没有看到 onRemove 的实现。