两点之间的距离谷歌地图a是未定义的api v3

Question

Updating to v3. Library is declared like this:

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&v=3&libraries=geometry"></script>

Finding distance like this:

var loc1 = google.maps.LatLng(52.5773139, 1.3712427);
var loc2 = google.maps.LatLng(52.4788314, 1.7577444);
alert(google.maps.geometry.spherical.computeDistanceBetween (loc1, loc2));

Firebug returns this:

TypeError: a is undefined

Assuming it's an error because lat and lon need to be passed as objects, so after some googling I tried this:

var loc1 = google.maps.LatLng({'position' :52.5773139, 1.3712427});
var loc2 = google.maps.LatLng({'position' :52.4788314, 1.7577444});

Still get same error, what am I doing wrong?

Answer 1

You should use the keyword new to instantiate the LatLng object.

var loc1 = new google.maps.LatLng(52.5773139, 1.3712427);
var loc2 = new google.maps.LatLng(52.4788314, 1.7577444);