The Sencha command

To create our production build, we need to use the Sencha Command. This tool will help us in our purpose.

Tip

If you are running Sencha CMD on Windows 7 or Windows 8, it's recommended that you run the tool with "administrator privileges".

So let's type this in our console tool:

[path of my app]\sencha app build

In my case (Windows OS 7; 64-bit), I typed:

K:\x_extjsdev\app_test\myapp>sencha app build

After the command runs, you will see something like this in your console tool:

So, let's check out the build folder inside our application folder. We may have the following list of files:

Notice that the build process has created these:

• resources: This file will contain a copy of our resources folder, plus one or more CSS files starting with myApp-all
• app.js: This file contains all of the necessary JS (Ext JS core classes, components, and our custom application classes)
• app.json: This is a small manifest file compressed
• index.html: This file is similar to our...