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Editorial Team
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Asked: 2026-05-23T13:49:34+00:00

Hitting a page with the follow script displays: lat: undefined lon: 51.5001524 Why is

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Hitting a page with the follow script displays:

  • lat: undefined
  • lon: 51.5001524

Why is it that while lat is undefined, lon is not?
A working example can be found here.

Pull up your web console and see for yourself!

$(document).ready(function(){

var geocoder;
function codeAddress() 
{
    geocoder = new google.maps.Geocoder();
    var address = 'London, England';
    geocoder.geocode({'address': address}, function(results, status) 
    {   
      if (status == google.maps.GeocoderStatus.OK) 
      {
        lat = results[0].geometry.location.Ia;
        lon = results[0].geometry.location.Ja;

        console.log("lat: " + lat);
        console.log("lon: " + lon);
      }
    });
}
    codeAddress();
});
</script>
</head>
<body>
</body>
</html>

While we’re at it – what is the historical significance of Ia and Ja? I presume it relates to the Cartesian unit vectors i and j (predominately used in Engineering) though I’m not sure.

I found other examples online who use .lat for .Ia and .lng for .Ja

These, however, are returning in the console: 

function () {
    return this[a];
}

Just need a kick in the right direction.
Thank you.

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1 Answer

  1. Editorial Team

    I would use lat() and lng():

    var lat = results[0].geometry.location.lat();
var lng = results[0].geometry.location.lng();
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