The Hybrid App SDK includes the open source Datajs JavaScript library, which you can include as part of your application to access OData stores.
This library, along with the rest of the Hybrid App JavaScript API, is in <SMP_HOME>\MobileSDK<version>\HybridApp\API\Container\Datajs-1.x.x.js. As of this writing, the latest version of Datajs is 1.0.3.
The Datajs library is used to fetch the data used in your Hybrid App. This data can be displayed in your Hybrid App using a variety of UI frameworks such as jQuery Mobile, Sencha, or your favorite Web-based UI framework. Using OData in Hybrid Apps is similar to using the Rest API, described in Developer Guide: REST API Applications.
If the back-end OData service has support, you can use the Datajs library to read, modify, and delete data using standard HTTP methods (POST, PUT, DELETE, and so on).