我的错误是
Uncaught TypeError：无法读取null js的属性'__e3_'？v = 3.exp＆amp; key = AIzaSyDwehIgJvLsANnWEDppiUFr4Srk2G2M5IE＆amp; sensor = false＆amp; libraries = drawing，places：35
当我调查时，它会将我带到我的代码的这一部分
google.maps.event.addListenerOnce(map, 'tilesloaded', function () {
这是我的代码：
function initialize() {
var mzansi = new google.maps.LatLng(-28.2751829172523, 25.0430317799304);
var mapOptions = {
center: mzansi,
defaults: {
icon: 'red_dot.png',
shadow: 'dot_shadow.png',
editable: true,
strokeColor: '#990000',
fillColor: '#EEFFCC',
fillOpacity: 0.6
},
disableDefaultUI: true,
mapTypeControl: true,
mapTypeId: google.maps.MapTypeId.ROADMAP,
mapTypeControlOptions: {
position: google.maps.ControlPosition.TOP_LEFT,
style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
},
panControl: false,
streetViewControl: false,
zoom: 6,
zoomControl: true,
zoomControlOptions: {
position: google.maps.ControlPosition.LEFT_TOP,
style: google.maps.ZoomControlStyle.SMALL
}
}
$('#tabNavigationDiv').tabs({
border: true,
onSelect: function (value) {
switch (value) {
case "Subscription List":
selectedDayTab = 1;
if (SubscriptionMap == null) {
SubscriptionMap = new google.maps.Map(document.getElementById('SubscriptionListMap'), mapOptions);
}
else {
google.maps.event.trigger(SubscriptionMap, 'resize');
}
break;
case "Predefined Location List":
selectedDayTab = 2;
if (PredefinedMap == null) {
PredefinedMap = new google.maps.Map(document.getElementById('PredefinedLocationListMap'), mapOptions);
}
else {
google.maps.event.trigger(PredefinedMap, 'resize');
}
break;
case "Predefined Location":
selectedDayTab = 3;
if (map == null) {
map = new google.maps.Map(document.getElementById('PredefinedLocationMap'), mapOptions);
}
else {
google.maps.event.trigger(map, 'resize');
}
break;
}
}
}).tabs('tabs');
google.maps.event.addListenerOnce(map, 'tilesloaded', function () {
RSABounds = map.getBounds();
console.log(RSABounds)
$(searchLocation).autocomplete({
source: function (request, response) {
if (geocoder == null) {
geocoder = new google.maps.Geocoder();
}
geocoder.geocode({
'address': request.term, bounds: RSABounds
}, function (results, status) {
if (status == google.maps.GeocoderStatus.OK) {
/* map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});*/
map.setZoom(20);
var searchLoc = results[0].geometry.location;
var lat = results[0].geometry.location.lat();
var lng = results[0].geometry.location.lng();
var latlng = new google.maps.LatLng(lat, lng);
var bounds = results[0].geometry.bounds;
geocoder.geocode({
'latLng': latlng
}, function (results1, status1) {
if (status1 == google.maps.GeocoderStatus.OK) {
if (results1[1]) {
response($.map(results1, function (loc) {
return {
label: loc.formatted_address,
value: loc.formatted_address,
bounds: loc.geometry.bounds
}
}));
}
}
});
}
});
},
select: function (event, ui) {
var pos = ui.item.position;
var lct = ui.item.locType;
var bounds = ui.item.bounds;
if (bounds) {
map.fitBounds(bounds);
}
}
});
});
// searchBox = new google.maps.places.SearchBox(document.getElementById('description'));
searchBox = new google.maps.places.SearchBox(document.getElementById('searchLocation'));
google.maps.event.addListener(searchBox, 'places_changed', function () {
searchBox.set('map', null);
var places = searchBox.getPlaces();
var bounds = new google.maps.LatLngBounds();
var i, place;
for (i = 0; place = places[i]; i++) {
(function (place) {
var marker = new google.maps.Marker({
position: place.geometry.location
});
var circle = new google.maps.Circle({
map: map,
radius: 16093, // 10 miles in metres
fillColor: '#AA0000'
});
circle.bindTo('center', marker, 'position');
marker.bindTo('map', searchBox, 'map');
google.maps.event.addListener(marker, 'map_changed', function () {
if (!this.getMap()) {
this.unbindAll();
}
});
bounds.extend(place.geometry.location);
}(place));
}
map.fitBounds(bounds);
searchBox.set('map', map);
map.setZoom(Math.min(map.getZoom(), 12));
});
google.maps.event.addListener(map, 'tilesloaded', function () {
});
map.drawingManager = new google.maps.drawing.DrawingManager({
drawingControlOptions: {
position: google.maps.ControlPosition.TOP_CENTER,
drawingModes: [
/* google.maps.drawing.OverlayType.MARKER,
google.maps.drawing.OverlayType.POLYLINE,
google.maps.drawing.OverlayType.POLYGON,*/
google.maps.drawing.OverlayType.RECTANGLE
]
},
/* markerOptions: map.defaults,
polygonOptions: map.defaults,
polylineOptions: map.defaults,*/
rectangleOptions: map.defaults
});
map.drawingManager.setMap(map);
google.maps.event.addListener(map.drawingManager, 'overlaycomplete', function (event) {
var wkt;
//app.clearText();
clearMap();
arrayOverlays.push(event.overlay);
wkt = new Wkt.Wkt();
wkt.fromObject(event.overlay);
var myGeometry = wkt.write();
viewModel.location_geom(myGeometry);
// viewModel.radius(myGeometry);
console.log(myGeometry);
});
}
}
答案 0 :(得分：1)
除非您点击开关案例“预定义位置”，否则代码中未定义map变量。因此，除非在这种情况下，它在生成错误的行中未定义（它将为null）：
google.maps.event.addListenerOnce(map, 'tilesloaded', function ()