Authenticated access to Google APIs with CORS

Google APIs allow communication with Google Services, such as Drive, Search, Gmail, Translate, Google Maps, YouTube, and many others. You can leverage these APIs in a third-party application to take advantage of or extend the functionality of the existing Google Services.

The Google API Client library for JavaScript makes it easier for you to write JavaScript that works with Google Services.

Note

Google APIs support Cross-Origin Resource Sharing (CORS).

If you want your application to access a Google Service user's personal information, OAuth 2.0 provides authenticated access to the user's information.

For more information about the Google API Client Library for JavaScript see: .

OAuth and CORS are implemented via the Google API Client Library for JavaScript. Google also provides a standalone JavaScript auth client, which can be used without loading the entire JS library.

Google API Keys

Google defines two levels of API access:

• Simple API calls that do...