我一直有尝试在地图上隐藏/清除标记的问题。我看了谷歌的文档，我有正确的代码，我也在这里看了几个答案，但似乎没有什么似乎对我有用，我添加了一个清晰的地图按钮，并创建了一个功能，但这没有工作。
另外，我已经尝试添加地理定位方面，但这根本不起作用，但是当我使用代码google的api已经让它工作时，当我用我的代码实现它时
我不知道我是否将代码放在错误的地方或者什么不是，任何帮助都将不胜感激。
var map;
var infoWindow;
var service;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: 51.545213, lng: -0.0307699},
zoom: 15,
styles: [{
stylers: [{visibility: 'simplified'}]
}, {
elementType: 'labels',
stylers: [{visibility: 'on'}]
}]
});
var input = /** @type {!HTMLInputElement} */(
document.getElementById('pac-input'));
var types = document.getElementById('type-selector');
map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(types);
var autocomplete = new google.maps.places.Autocomplete(input);
autocomplete.bindTo('bounds', map);
var infowindow = new google.maps.InfoWindow();
var marker = new google.maps.Marker({
map: map,
anchorPoint: new google.maps.Point(0, -29)
});
autocomplete.addListener('place_changed', function() {
infowindow.close();
marker.setVisible(false);
var place = autocomplete.getPlace();
if (!place.geometry) {
// User entered the name of a Place that was not suggested and
// pressed the Enter key, or the Place Details request failed.
window.alert("No details available for input: '" + place.name + "'");
return;
}
// If the place has a geometry, then present it on a map.
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17); // Why 17? Because it looks good.
}
marker.setIcon(/** @type {google.maps.Icon} */({
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(35, 35)
}));
marker.setPosition(place.geometry.location);
marker.setVisible(true);
var address = '';
if (place.address_components) {
address = [
(place.address_components[0] && place.address_components[0].short_name || ''),
(place.address_components[1] && place.address_components[1].short_name || ''),
(place.address_components[2] && place.address_components[2].short_name || '')
].join(' ');
}
infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + address);
infowindow.open(map, marker);
});
// Sets a listener on a radio button to change the filter type on Places
// Autocomplete.
function setupClickListener(id, types) {
var radioButton = document.getElementById(id);
radioButton.addEventListener('click', function() {
autocomplete.setTypes(types);
});
}
setupClickListener('changetype-all', []);
setupClickListener('changetype-address', ['address']);
setupClickListener('changetype-establishment', ['establishment']);
setupClickListener('changetype-geocode', ['geocode']);
infoWindow = new google.maps.InfoWindow();
service = new google.maps.places.PlacesService(map);
// The idle event is a debounced event, so we can query & listen without
// throwing too many requests at the server.
map.addListener('idle', performSearch(places));
}
function handleLocationError(browserHasGeolocation, infoWindow, pos) {
infoWindow.setPosition(pos);
infoWindow.setContent(browserHasGeolocation ?
'Error: The Geolocation service failed.' :
'Error: Your browser doesn\'t support geolocation.');
}
function performSearch(places) {
var places = places;
var request = {
bounds: map.getBounds(),
keyword: places
};
service.radarSearch(request, callback);
}
function callback(results, status) {
if (status !== google.maps.places.PlacesServiceStatus.OK) {
console.error(status);
return;
}
for (var i = 0, result; result = results[i]; i++) {
addMarker(result);
}
}
function addMarker(place) {
var marker = new google.maps.Marker({
map: map,
position: place.geometry.location,
// icon: {
// url: 'https://developers.google.com/maps/documentation/javascript/images/circle.png',
//anchor: new google.maps.Point(10, 10),
//scaledSize: new google.maps.Size(10, 17)
//}
});
google.maps.event.addListener(marker, 'click', function() {
service.getDetails(place, function(result, status) {
if (status !== google.maps.places.PlacesServiceStatus.OK) {
console.error(status);
return;
}
infoWindow.setContent(result.name);
infoWindow.open(map, marker);
});
});
}
function initAutocomplete() {
var map = new google.maps.Map(document.getElementById('map'), {
center: { lat: -33.8688, lng: 151.2195 },
zoom: 13,
mapTypeId: 'roadmap'
});
// Create the search box and link it to the UI element.
var searchInput = document.getElementById('pac-input');
var searchBtn = document.getElementById('search-button');
var searchBox = new google.maps.places.SearchBox(searchInput);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(searchInput);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(searchBtn);
// Bias the SearchBox results towards current map's viewport.
map.addListener('bounds_changed', function () {
searchBox.setBounds(map.getBounds());
});
var markers = [];
// Listen for the event fired when the user selects a prediction and retrieve
// more details for that place.
searchBox.addListener('places_changed', function () {
//displaySearchResults(map, searchBox, markers);
});
searchBtn.onclick = function () {
displaySearchResults(map,searchBox,markers);
}
}
function displaySearchResults(map, searchBox, markers) {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
// Clear out the old markers.
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function (place) {
if (!place.geometry) {
console.log("Returned place contains no geometry");
return;
}
var icon = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(25, 25)
};
// Create a marker for each place.
markers.push(new google.maps.Marker({
map: map,
icon: icon,
title: place.name,
position: place.geometry.location
}));
function clearMarkers() {
for (var i = 0; i < markers.length; i++) {
markers[i].setMap(map);
}
}
if (place.geometry.viewport) {
// Only geocodes have viewport.
bounds.union(place.geometry.viewport);
} else {
bounds.extend(place.geometry.location);
}
});
map.fitBounds(bounds);
}
答案 0 :(得分：0)
没有大的测试：
在“function clearMarkers（）”中，您必须使用：
标记物[I] .setMap（空）;
代替markers [i] .setMap（map）;这将再次设置标记
答案 1 :(得分：0)
其他：
宣告：
var marker;
var markers[];
作为代码顶部的全局。函数内部仅使用“marker ..”，而不是“var marker”。如果您之后要删除的标记已通过“marker = new google.maps.Marker（{...”将其随后推入带有markers.push（marker）的markers数组中进行定义。
同样在“//为每个地方创建标记”部分。我会使用标准的方式进行定义和存储：
marker = new google.maps.Marker({
...});
markers.push(marker).