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POGoogle maps geocode API V3 not returning result in javascript function
 

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  1. POGoogle maps geocode API V3 not returning result in javascript function
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    <p>I'm trying to use the Google geocoder API V3 to plot a location on a map based on an address specified by the user, code is below. </p> <p>When I make a request directly (e.g. to <a href="http://maps.googleapis.com/maps/api/geocode/json?address=peterborough&amp;sensor=false" rel="nofollow noreferrer">http://maps.googleapis.com/maps/api/geocode/json?address=peterborough&amp;sensor=false</a>) I get the expected response. However, when I make the same request using the code below, the <em>midpoint</em> variable is always undefined after the <em>getLatLong</em> function has exited.</p> <p>What am I doing incorrectly?</p> <pre><code>function loadFromSearch(address) { midpoint = getLatLong(address); mapCentre = midpoint; map.setMapTypeId(google.maps.MapTypeId.ROADMAP); ... } function getLatLong(address) { var result; var url = 'http://maps.googleapis.com/maps/api/geocode/json?address=' + encodeURIComponent(address) + '&amp;sensor=false' $.getJSON(url, function (data){ if (data.status == "OK") { result = data.results[0].geometry.location; } }); return result; } </code></pre> <p>==================================================================================</p> <p>In light of responses, I have now updated the code to the following. I'm still not getting any result though, with breakpoints set in Firebug the <em>result = data.results[0].geometry.location;</em> never gets hit.</p> <pre><code>function loadFromSearch(address) { midpoint = getLatLong(address, loadWithMidpoint); } function getLatLong(address, callback) { var result; var url = 'http://maps.googleapis.com/maps/api/geocode/json?address=' + encodeURIComponent(address) + '&amp;sensor=false' $.getJSON(url,{}, function (data) { if (data.status == "OK") { result = data.results[0].geometry.location; callback(result); } }); } function loadWithMidpoint(centre) { mapCentre = centre; map.setMapTypeId(google.maps.MapTypeId.ROADMAP); ... } </code></pre> <p>============================================================================= </p> <p>I have it! The final code, which works, looks like this:</p> <pre><code>function loadFromSearch(coordinates, address) { midpoint = getLatLong(address, latLongCallback); } function getLatLong(address, callback) { var geocoder = new google.maps.Geocoder(); var result = ""; geocoder.geocode({ 'address': address, 'region': 'uk' }, function (results, status) { if (status == google.maps.GeocoderStatus.OK) { result = results[0].geometry.location; latLongCallback(result); } else { result = "Unable to find address: " + status; } }); return result; } function latLongCallback(result) { mapCentre = result; map.setMapTypeId(google.maps.MapTypeId.ROADMAP); ... } </code></pre>
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