Can you load Google Maps API v3 via Google AJAX API loader

问题

Some time ago I used the regular method of loading Google Maps API like this:

<script type="text/javascript" src="http://maps.google.com/maps?file=api&v=2&key=abcdefg&sensor=true">

Later I switched to Google AJAX APIs to load Google Maps API. This was because a couple of "widgets" on my website needed the Google Ajax API loader so I chose to be consistent and used the AJAX APIs to load Google Maps as well:

<script type="text/javascript" src="http://www.google.com/jsapi?key=abcdef"></script>
<script type="text/javascript">
  google.load("maps", "2", {"other_params": "sensor=true"});
</script>

Now that I have finally decided to use Google Maps API v3, this page does not list API v3 in the available version list. None of the examples on API v3 documentation show the use of AJAX APIs as well. Is is possible (and supported) to load Google Maps API v3 via AJAX API loader?

回答1:

It's undocumented, but it works.

google.load("maps", "3", {other_params:'key=YOUR_API_KEY', callback: function(){
  var map; // initialize your map in here
}});

[EDIT] The documentation now requires the use of an API key that is passed to the loader as a "key" parameter. I've removed 'sensor=false' as a parameter because it is now explicitly not required and throws a warning when provided.

回答2:

this example work perfectly.

//Set google Api
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
//Initialize General
<script type="text/javascript">
    //Add Jquery, if you need
    google.load("jquery", "1.7.1");
    //Initialize Map, with option sensor=false
    google.load("maps", 3, {other_params:"key=YOUR_API_KEY"});
    //Initialize Map's
    google.setOnLoadCallback(function() {
            var options = {
                  zoom: 10,
                  center: new google.maps.LatLng(-34.616507,-58.409463),
                  mapTypeId: google.maps.MapTypeId.ROADMAP
            }
            map = new google.maps.Map(document.getElementById('map_canvas'), options);
    });


</script>

来源：https://stackoverflow.com/questions/5296115/can-you-load-google-maps-api-v3-via-google-ajax-api-loader