Javascript 谷歌地图删除所有标记,然后创建新标记
我正在创建一个地图,默认情况下加载地址,并在搜索框中显示标记和地点地址,效果很好。但是我需要添加click事件,它将首先删除所有标记,然后放置标记。到目前为止,我正在开发的脚本,做所有我需要的。但当用户单击地图时,搜索框会获得地点地址,但旧标记不会删除,新标记不会出现在单击位置 下面是我的工作示例代码: 这是我的代码:Javascript 谷歌地图删除所有标记,然后创建新标记,javascript,google-maps,google-maps-api-3,marker,Javascript,Google Maps,Google Maps Api 3,Marker,我正在创建一个地图,默认情况下加载地址,并在搜索框中显示标记和地点地址,效果很好。但是我需要添加click事件,它将首先删除所有标记,然后放置标记。到目前为止,我正在开发的脚本,做所有我需要的。但当用户单击地图时,搜索框会获得地点地址,但旧标记不会删除,新标记不会出现在单击位置 下面是我的工作示例代码: 这是我的代码: <script type="text/javascript"> function initAutocomplete(
<script type="text/javascript">
function initAutocomplete() {
var myOptions = {
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP,
mapTypeControl: false
}
var map;
var marker;
var geocoder = new google.maps.Geocoder();
var address = document.getElementById('pac-input').value;
var infowindow = new google.maps.InfoWindow();
geocoder.geocode( { address: address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK && results.length) {
if (status != google.maps.GeocoderStatus.ZERO_RESULTS) {
//create map
map = new google.maps.Map(document.getElementById("map"), myOptions);
//center map
map.setCenter(results[0].geometry.location);
//create marker
marker = new google.maps.Marker({
position: results[0].geometry.location,
map: map,
title: document.getElementById('pac-input').value,
});
// Create the search box and link it to the UI element.
var input = document.getElementById('pac-input');
var searchBox = new google.maps.places.SearchBox(input);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
// Bias the SearchBox results towards current maps 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() {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
// Clear out the old markers.
markers.forEach(function(marker) {
marker.setMap(null);
});
marker.setMap(null);
markers = [];
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function(place) {
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,
title: place.name,
position: place.geometry.location
}));
if (place.geometry.viewport) {
// Only geocodes have viewport.
bounds.union(place.geometry.viewport);
} else {
bounds.extend(place.geometry.location);
}
});
map.fitBounds(bounds);
});
google.maps.event.addListener(map, 'click', function(event) {
geocoder.geocode({
'latLng': event.latLng
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (results[0]) {
document.getElementById('pac-input').value = results[0].formatted_address;
}
}
});
placeMarker(event.latLng);
});
function placeMarker(location) {
if (marker) {
marker.setPosition(location);
} else {
marker = new google.maps.Marker({
position: place.geometry.location,
map: map,
title: place.name,
});
}
}
}
}
else {
$('#map').css({'height' : '15px'});
$('#map').html("Oops! address could not be found, please make sure the address is correct.");
resizeIframe();
}
});
function resizeIframe() {
var me = window.name;
if (me) {
var iframes = parent.document.getElementsByName(me);
if (iframes && iframes.length == 1) {
height = document.body.offsetHeight;
iframes[0].style.height = height + "px";
}
}
}
}
</script>
函数initAutocomplete(){
变量myOptions={
缩放:15,
mapTypeId:google.maps.mapTypeId.ROADMAP,
mapTypeControl:false
}
var映射;
var标记;
var geocoder=new google.maps.geocoder();
var address=document.getElementById('pac-input')。值;
var infowindow=new google.maps.infowindow();
geocoder.geocode({address:address},函数(结果,状态){
if(status==google.maps.GeocoderStatus.OK&&results.length){
if(status!=google.maps.GeocoderStatus.ZERO\u结果){
//创建地图
map=新的google.maps.map(document.getElementById(“map”),myOptions);
//中心地图
map.setCenter(结果[0].geometry.location);
//创建标记
marker=新的google.maps.marker({
位置:结果[0]。geometry.location,
地图:地图,
标题:document.getElementById('pac-input')。值,
});
//创建搜索框并将其链接到UI元素。
var input=document.getElementById('pac-input');
var searchBox=newgoogle.maps.places.searchBox(输入);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(输入);
//将搜索框结果偏向“当前贴图”视口。
addListener('bounds_changed',function(){
searchBox.setBounds(map.getBounds());
});
var标记=[];
//侦听用户选择预测并检索时激发的事件
//关于那个地方的更多细节。
searchBox.addListener('places\u changed',function(){
var places=searchBox.getPlaces();
如果(places.length==0){
返回;
}
//清除旧的标记。
markers.forEach(函数(marker){
marker.setMap(空);
});
marker.setMap(空);
标记=[];
//对于每个位置,获取图标、名称和位置。
var bounds=new google.maps.LatLngBounds();
地点。forEach(功能(地点){
变量图标={
url:place.icon,
大小:新谷歌地图大小(71,71),
来源:新google.maps.Point(0,0),
主播:新google.maps.Point(17,34),
scaledSize:new google.maps.Size(25,25)
};
//为每个地方创建一个标记。
markers.push(新的google.maps.Marker)({
地图:地图,
标题:place.name,
位置:place.geometry.location
}));
if(place.geometry.viewport){
//只有地理代码具有视口。
联合(place.geometry.viewport);
}否则{
扩展(place.geometry.location);
}
});
映射边界(bounds);
});
google.maps.event.addListener(映射,'click',函数(事件){
地理编码({
“latLng”:event.latLng
},功能(结果、状态){
if(status==google.maps.GeocoderStatus.OK){
如果(结果[0]){
document.getElementById('pac-input')。值=结果[0]。格式化的\u地址;
}
// Clear out the old markers.
markers.forEach(function(marker) {
marker.setMap(null);
});
marker.setMap(null);
markers = [];
// Clear out the old markers.
markers.forEach(function(marker) {
marker.setMap(null);
});
google.maps.event.addListener(map, 'click', function(event) {
geocoder.geocode({
'latLng': event.latLng
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (results[0]) {
markers.forEach(function(marker) {
marker.setMap(null);
})
document.getElementById('pac-input').value = results[0].formatted_address;
}
}
});
placeMarker(event.latLng);
});
// Create a marker for each place.
markers.push(new google.maps.Marker({
map: map,
title: place.name,
position: place.geometry.location
}));
placeMarker(place.geometry.location)