Connect the frontend to the backend and test the app

This section is part of a larger tutorial to build a QR code example app. You need to build the frontend and build the backend before starting these tasks.

In this section, you'll connect the frontend of the app with the backend functions and APIs. In some cases you'll replace placeholder code and mock data with functional code.

At the end of this section of the tutorial, you'll have a working QR code app to try out.