如何创建标记的侦听器并获取其经度和纬度。当我为点击事件的每个标记创建一个监听器时,我可以对点击进行类似警报的操作,但是如何在点击时获得标记的坐标,即click -> this.getLat/getLng
等?
答案 0 :(得分:28)
试试这个:
marker = new google.maps.Marker({
position: latlng,
map: map
}); //end marker
//Add listener
google.maps.event.addListener(marker, "click", function (event) {
alert(this.position);
}); //end addListener
答案 1 :(得分:23)
作为Bryan Weaver的优秀答案的后续,如果你想分别保存纬度和经度,你必须使用lat()和lng()。 position属性不是常规字符串。
bryan的代码将成为:
marker = new google.maps.Marker({
position: latlng,
map: map
}); //end marker
//Add listener
google.maps.event.addListener(marker, "click", function (event) {
var latitude = this.position.lat();
var longitude = this.position.lng();
alert(this.position);
}); //end addListener
您可以直接在变量(latLng)上应用lat()和lng()
var latitude = latLng.lat();
var longitude = latLng.lng();
答案 2 :(得分:1)
这里的所有答案都很好,
但我尝试过类似谷歌地图的作品。 当您单击地图上的某个位置时,会显示一个标记,但当您单击其他位置时,旧标记会消失,新标记会在文本字段中显示纬度和经度。
这里是DEMO
// In the following example, markers appear when the user clicks on the map.
// The markers are stored in an array.
// The user can then click an option to hide, show or delete the markers.
var map;
var markers = [];
function initMap() {
var haightAshbury = {lat: 23.2748308, lng: 77.4519248};
map = new google.maps.Map(document.getElementById('map'), {
zoom: 16.3, // Set the zoom level manually
center: haightAshbury,
mapTypeId: 'terrain'
});
// This event listener will call addMarker() when the map is clicked.
map.addListener('click', function(event) {
if (markers.length >= 1) {
deleteMarkers();
}
addMarker(event.latLng);
document.getElementById('lat').value = event.latLng.lat();
document.getElementById('long').value = event.latLng.lng();
});
}
// Adds a marker to the map and push to the array.
function addMarker(location) {
var marker = new google.maps.Marker({
position: location,
map: map
});
markers.push(marker);
}
// Sets the map on all markers in the array.
function setMapOnAll(map) {
for (var i = 0; i < markers.length; i++) {
markers[i].setMap(map);
}
}
// Removes the markers from the map, but keeps them in the array.
function clearMarkers() {
setMapOnAll(null);
}
// Deletes all markers in the array by removing references to them.
function deleteMarkers() {
clearMarkers();
markers = [];
}
</script>
<script async defer
src="http://maps.google.com/maps/api/js?sensor=false&callback=initMap">
</script>
所以这段代码的作用是,当你点击地图上的某个地方时,纬度和经度的值会显示在文本字段中。