我正在尝试计算我的位置与其他位置之间的距离，但我得到的只是 NaN。我很确定我将代码放在脚本中的错误位置。有人可以帮我解决这个问题吗？
<!DOCTYPE html>
<html>
<head>
<script src="http://maps.google.com/maps/api/js?sensor=false&v=3&libraries=geometry"></script>
</head>
<body>
<p id="demo"></p>
<button onclick="getLocation()" id="demo">get current location</button>
<button onclick="console.log(distance)">get ditance from current location to other location</button>
<script>
var lat;
var longt;
var latLngA = new google.maps.LatLng(lat, longt);
var latLngB = new google.maps.LatLng(40.778721618334295, -73.96648406982422);
var distance = google.maps.geometry.spherical.computeDistanceBetween(latLngA, latLngB);
var x=document.getElementById("demo");
function getLocation(){
if (navigator.geolocation){
navigator.geolocation.getCurrentPosition(showPosition);
}
else{
x.innerHTML="Geolocation is not supported by this browser.";}
}
function showPosition(position){
lat = position.coords.latitude;
longt = position.coords.longitude;
x.innerHTML="Latitude: " + lat + "<br>Longitude: " + longt;
}
</script>
</body>
</html>
最佳答案
使用 libraries=geometry 的简化脚本
function getLocation() {
navigator.geolocation.getCurrentPosition(
function(position) {
var latLngA = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
var latLngB = new google.maps.LatLng(40.778721618334295, -73.96648406982422);
var distance = google.maps.geometry.spherical.computeDistanceBetween(latLngA, latLngB);
alert(distance);//In metres
},
function() {
alert("geolocation not supported!!");
}
);
}
关于javascript - 使用 Google Maps API V3 计算当前位置和不同位置之间的距离，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16111124/