在下面的代码中，我使用 Google Maps API V3 在地图上添加了一个自定义控件。
<html>
<head>
<title>Simple Map</title>
<meta name="viewport" content="initial-scale=1.0">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var map;
function initMap() {
var myOptions = {
zoom: 8,
center: {lat: -34.397, lng: 150.644},
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map"), myOptions);
//### Add a button on Google Maps ...
var controlMarkerUI = document.createElement('DIV');
controlMarkerUI.style.cursor = 'pointer';
controlMarkerUI.style.backgroundColor = 'blue';
controlMarkerUI.style.height = '28px';
controlMarkerUI.style.width = '25px';
controlMarkerUI.style.top = '11px';
controlMarkerUI.style.left = '120px';
controlMarkerUI.title = 'Click to get the coordinates';
map.controls[google.maps.ControlPosition.LEFT_TOP].push(controlMarkerUI);
}
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=<PUT_YOUR_KEY_HERE>&callback=initMap"
async defer></script>
</body>
</html>
现在我想在自定义控件上关联一个函数，只需在用户单击地图时返回单击坐标即可。
我可以这样做(无需将函数关联到自定义控件... (，以这种方式
google.maps.event.addListener(map, 'click', function (e) {
alert("Latitude: " + e.latLng.lat() + "rnLongitude: " + e.latLng.lng());
});
但我想激活/停用此功能，单击我的自定义控件。
建议/示例？
<html>
<head>
<title>Simple Map</title>
<meta name="viewport" content="initial-scale=1.0">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 70%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<button id="start">Start</button>
<button id="clearClick">Clear</button>
<script>
var map;
var listener1;
function initMap() {
var myOptions = {
zoom: 8,
center: {lat: -34.397, lng: 150.644},
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map"), myOptions);
//### Add a button on Google Maps ...
var controlMarkerUI = document.createElement('DIV');
controlMarkerUI.style.cursor = 'pointer';
controlMarkerUI.style.backgroundColor = 'blue';
controlMarkerUI.style.height = '28px';
controlMarkerUI.style.width = '25px';
controlMarkerUI.style.top = '11px';
controlMarkerUI.style.left = '120px';
controlMarkerUI.title = 'Click to get the coordinates';
listener1= google.maps.event.addListener(map, 'click', function
(e) {
alert("Latitude: " + e.latLng.lat() + "rnLongitude: " + e.latLng.lng());
});
document.getElementById("clearClick").onclick = function(){
google.maps.event.removeListener(listener1);
}
document.getElementById("start").onclick = function(){
listener1= google.maps.event.addListener(map, 'click', function
(e) {
alert("Latitude: " + e.latLng.lat() + "rnLongitude: " + e.latLng.lng());
});
}
map.controls[google.maps.ControlPosition.LEFT_TOP].push(controlMarkerUI);
}
</script>
<script>
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=&callback=initMap"
async defer></script>
</body>
</html>
有关以下链接的进一步参考
https://developers.google.com/maps/documentation/javascript/events
合并@Murali答案和这个答案 https://gis.stackexchange.com/questions/244132/how-to-associate-function-to-custom-controls-in-google-maps-api/244141#244141，我以这种方式解决了....
<html>
<head>
<title>Simple Map</title>
<meta name="viewport" content="initial-scale=1.0">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var map;
var listenerHandle;
//Enable-Disable the functionality
function show_XY(e){
listenerHandle = google.maps.event.addListener(map, 'click', alert_XY);
}
function alert_XY(e){
alert("Latitude: " + e.latLng.lat() + "rnLongitude: " + e.latLng.lng());
}
function removeListener(e){
google.maps.event.removeListener(listenerHandle);
}
function initMap() {
var myOptions = {
zoom: 8,
center: {lat: -34.397, lng: 150.644},
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map"), myOptions);
//### Add a button on Google Maps ...
var controlEditUI = document.createElement('DIV');
controlEditUI.id = "controlEditUI";
controlEditUI.style.cursor = 'pointer';
controlMarkerUI.style.backgroundColor = 'blue';
controlEditUI.style.height = '28px';
controlEditUI.style.width = '25px';
controlEditUI.style.top = '11px';
controlEditUI.style.left = '120px';
controlEditUI.title = 'Click to get the coordinates';
map.controls[google.maps.ControlPosition.LEFT_TOP].push(controlEditUI);
controlEditUI.addEventListener('click', show_XY);
//### Add a button on Google Maps ...
var controlTrashUI = document.createElement('DIV');
controlTrashUI.id = 'controlTrashUI';
controlTrashUI.style.cursor = 'pointer';
controlMarkerUI.style.backgroundColor = 'black';
controlTrashUI.style.height = '28px';
controlTrashUI.style.width = '25px';
controlTrashUI.style.top = '11px';
controlTrashUI.style.left = '150px';
controlTrashUI.title = 'Click to set the map to Home';
map.controls[google.maps.ControlPosition.LEFT_TOP].push(controlTrashUI);
controlTrashUI.addEventListener('click', removeListener);
};
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=<PUT_YOUR_KEY_HERE>&callback=initMap"
async defer></script>
</body>
</html>