现在我有谷歌 map 代码，它将在 map 上设置单个标记。我想要的是将单个标记移动到用户单击的任何坐标。我只希望 map 上有1个标记，因此我需要将单个标记移动到单击的任何位置。任何帮助表示赞赏。谢谢!
var initialLocation;
var siberia = new google.maps.LatLng(60, 105);
var newyork = new google.maps.LatLng(40.69847032728747, -73.9514422416687);
var browserSupportFlag = new Boolean();
function initialize() {
var myOptions = {
zoom: 6,
mapTypeId: google.maps.MapTypeId.HYBRID
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
myListener = google.maps.event.addListener(map, 'click', function(event) {
placeMarker(event.latLng);
google.maps.event.removeListener(myListener);
});
google.maps.event.addListener(map, 'drag', function(event) {
placeMarker(event.latLng);
google.maps.event.removeListener(myListener);
});
// Try W3C Geolocation (Preferred)
if(navigator.geolocation) {
browserSupportFlag = true;
navigator.geolocation.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
map.setCenter(initialLocation);
}, function() {
handleNoGeolocation(browserSupportFlag);
});
// Try Google Gears Geolocation
} else if (google.gears) {
browserSupportFlag = true;
var geo = google.gears.factory.create('beta.geolocation');
geo.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.latitude,position.longitude);
map.setCenter(initialLocation);
}, function() {
handleNoGeoLocation(browserSupportFlag);
});
// Browser doesn't support Geolocation
} else {
browserSupportFlag = false;
handleNoGeolocation(browserSupportFlag);
}
function handleNoGeolocation(errorFlag) {
if (errorFlag === true) {
alert("Geolocation service failed.");
initialLocation = newyork;
} else {
alert("Your browser doesn't support geolocation. We've placed you in Siberia.");
initialLocation = siberia;
}
}
function placeMarker(location) {
var marker = new google.maps.Marker({
position: location,
map: map,
draggable: true
});
map.setCenter(location);
var markerPosition = marker.getPosition();
populateInputs(markerPosition);
google.maps.event.addListener(marker, "drag", function (mEvent) {
populateInputs(mEvent.latLng);
});
}
function populateInputs(pos) {
document.getElementById("t1").value=pos.lat()
document.getElementById("t2").value=pos.lng();
}
}
最佳答案
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#map_canvas {height:600px;width:800px}
</style>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var map;
var markersArray = [];
function initMap()
{
var latlng = new google.maps.LatLng(41, 29);
var myOptions = {
zoom: 10,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
// add a click event handler to the map object
google.maps.event.addListener(map, "click", function(event)
{
// place a marker
placeMarker(event.latLng);
// display the lat/lng in your form's lat/lng fields
document.getElementById("latFld").value = event.latLng.lat();
document.getElementById("lngFld").value = event.latLng.lng();
});
}
function placeMarker(location) {
// first remove all markers if there are any
deleteOverlays();
var marker = new google.maps.Marker({
position: location,
map: map
});
// add marker in markers array
markersArray.push(marker);
//map.setCenter(location);
}
// 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;
}
}
</script>
</head>
<body onload="initMap()">
<div id="map_canvas"></div>
<input type="text" id="latFld">
<input type="text" id="lngFld">
</body>
</html>
关于javascript - Google Maps v3在 map 点击上设置单个标记点，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/4537164/