Hi Sascha,
one option would be to store your JSON Object via a JSON Model in the sap.ui.core.
- Create your JSON Object.
- Create a JSON Model and add the JSON object to it (var oJSONModel = new sap.ui.model.json.JSONModel(<your JSON Object>);).
- Add JSON Model to core (sap.ui.getCore().setModel(oJSONModel, <your identifier>);).
- With sap.ui.getCore().getModel(<your identifier>); you can access the JSONModel.
But as always: Avoid global things if possible
Regards,
Florian