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2012-08-15T14:47:14.380
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<p>Since you saved the file directly from the demo site, you did not save the CSS file associated with it (/maps/documentation/javascript/examples/default.css). So your map has no width/height to it. If you save this file and reference it properly it should work. Alternatively, you can just add the bit of css to your html file:</p> <pre><code><!DOCTYPE html> <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> <meta charset="utf-8"> <title>Google Maps JavaScript API v3 Example: Circle Simple</title> <style type="text/css"> html, body { height: 100%; margin: 0; padding: 0; } #map_canvas { height: 100%; } @media print { html, body { height: auto; } #map_canvas { height: 650px; } } </style> <script src="https://maps.googleapis.com/maps/api/js?sensor=false"></script> <script> // Create an object containing LatLng, population. var citymap = {}; citymap['chicago'] = { center: new google.maps.LatLng(41.878113, -87.629798), population: 2842518 }; citymap['newyork'] = { center: new google.maps.LatLng(40.714352, -74.005973), population: 8143197 }; citymap['losangeles'] = { center: new google.maps.LatLng(34.052234, -118.243684), population: 3844829 } var cityCircle; function initialize() { var mapOptions = { zoom: 4, center: new google.maps.LatLng(37.09024, -95.712891), mapTypeId: google.maps.MapTypeId.TERRAIN }; var map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions); for (var city in citymap) { // Construct the circle for each value in citymap. We scale population by 20. var populationOptions = { strokeColor: '#FF0000', strokeOpacity: 0.8, strokeWeight: 2, fillColor: '#FF0000', fillOpacity: 0.35, map: map, center: citymap[city].center, radius: citymap[city].population / 20 }; cityCircle = new google.maps.Circle(populationOptions); } } </script> </head> <body onload="initialize()"> <div id="map_canvas"></div> </body> </html> </code></pre>
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