Let's begin with tying together React and Node. Be prepared to follow along with the solution code at 
The frontend and Node.js - React and image upload
Figure 15.1 - Our photo gallery
We'll begin by exploring the architectural layout, then we'll review the React code, and finally we'll examine the Express backend.
Architecture
This application will be built using Node.js on the backend to store our uploaded files and React on the frontend. But how do we do that? Conceptually, we need to tell React to use an Express app to feed React information and to consume the files that we have sent. To accomplish this, we use a proxy as defined in the package.json file. It basically looks something like this:
Figure 15.2 - Proxying
If you're not familiar with the idea of a proxy...
