Why "google Is Not Defined " When I Load Google Js Api

i follow the api step by step,but can't load successful.. this is my code: &

Solution 1:

you should put any call to the google stuff inside the onGoogleDataLoad() function to make sure it is not launched before the APIs have finished loading.

function onGoogleDataLoad() {
  var service = new google.gdata.maps.MapsService('docs-example');
  listMaps()
}

Solution 2:

If you check the JS URL with your browser, you get the following result:

var error = new Error("Invalid autoload.");
error.toString = function() { return this.message; }
throw error;

Meaning, there's something wrong with your URL.