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POUsing AJAX to dynamically draw circles with Google Maps
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copied!<p>I am playing around with some geographical data, using the Google Maps API to generate circles on a map. Easy. The data is coming from a MySQL database and I am using PHP to print this into the script on loading. The structure of the JavaScript object looks like this:</p> <pre><code>var circles = { 1 : { center : new google.maps.LatLng(55,-1), size: 1000}, 2 : { center : new google.maps.LatLng(56,-2), size: 2000} }; </code></pre> <p><strong>Goal</strong></p> <p>The circles are not arbitrary and the locations they represent have associated characteristics which I would like to filter on. Assume a drop down box allows you to select the size range of the circles displayed on the map. When changed, the map will reload the circles based on this selection.</p> <p>I have created a PHP script which generates the data and have tried to use AJAX (jQuery) to assign the response to the circles variable, as shown below. When I have cracked it the idea is that the script will generate different data based on the drop down selection. </p> <pre><code>var circles = {}; var circles = $.ajax({ url: "data.php", async: false }).responseText; </code></pre> <p>The text that the PHP (data.php) script generates is this:</p> <blockquote> <p>1 : { center : new google.maps.LatLng(55,-1), size: 1000},2 : { center : new google.maps.LatLng(56,-2), size: 2000}</p> </blockquote> <p>However, this does not work. I may be missing a step or be on the wrong track but any guidance would be welcomed.</p> <p>Thanks in advance!</p>

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