'If no callback is specified when asynchronously loading gmaps the other necessary google map scripts aren't loaded

Is this documented somewhere that I need to specify a callback in order for the google.maps module to be defined? Or is this a bug.

The following code doesn't load the google maps module:

<!DOCTYPE html>
<html>
  <head>
    <title>
      Google Maps JavaScript API v3 Example: Asynchronous Map Simple
    </title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="UTF-8">
    <style type="text/css">
      html { height: 100% }
      body { height: 100%; margin: 0; padding: 0 }
      #map_canvas { height: 100% }
    </style>
    <script type="text/javascript">
      function initialize() {
        var myOptions = {
          zoom: 8,
          center: new google.maps.LatLng(-34.397, 150.644),
          mapTypeId: google.maps.MapTypeId.ROADMAP
        };

        var map = new google.maps.Map(document.getElementById('map_canvas'),
            myOptions);
      }

      function loadScript() {
        var script = document.createElement('script');
        script.type = 'text/javascript';
        script.src = 'http://maps.googleapis.com/maps/api/js?v=3.6&key=myKey&sensor=false'   //adding  'callback=something' gets the maps module to load
        document.body.appendChild(script);
      }

      window.onload = loadScript;
    </script>
  </head>
  <body>
    <div id="map_canvas"></div>
  </body>
</html>

Edit -- response to answer

To do so, you can inject your own tag in response to a window.onload event or a function call, but you need to additionally instruct the Maps JavaScript API bootstrap to delay execution of your application code until the Maps JavaScript API code is fully loaded. You may do so using the callback parameter, which takes as an argument the function to execute upon completing loading the API.

How does that imply that not having a callback will not load any of the api? It says that you can use the callback parameter to execute a function when the code if fully loaded but it doesn't say the code will never load without a callback parameter.

google-maps google-maps-api-3

Solution 1:^[1]

It is documented here: http://code.google.com/apis/maps/documentation/javascript/tutorial.html#asynch

Sources

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Source: Stack Overflow

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Solution 1	puckhead

'If no callback is specified when asynchronously loading gmaps the other necessary google map scripts aren't loaded

Solution 1:[1]

Sources

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Solution 1:^[1]