<script type="text/javascript">
    var options = {
        enableHighAccuracy:false,
        timeout:8000,
        maximumAge:1000
    }
    var long = 0;
    var lat = 0;
    navigator.geolocation.getCurrentPosition(onSuccess, onError, options);

    function onSuccess(position){
    var long = position.coords.longitude;
    
 
var lat = position.coords.latitude;        
        alert(long+‘=>‘+lat);
        console.log(position);
    }

    function onError(error) {
        console.log(error);
    }

</script>

JS新API標準 地理定位

JS新API標準 地理定位（navigator.geolocation