In this chapter, you learned how to set up and install Ext JS 5 and Sencha Cmd too. You also learned about the content of the folders included in the Ext JS 5 SDK, and the differences between folders in version 4 and version 5. We mentioned some useful tools that will be essential for this book; however, many developers may not like them or may not feel comfortable with these tools, so feel free to use your favorite tools and editors.

Through the course of this book, you are going to learn about the use of Ext JS 5, and we will cover the most important parts, features, and components, and many more classes and tools. At the end of this book, we will complete a small real-world application so you can get an idea of how to implement Ex JS for your next and future projects.

In the next chapter, we will focus on the Ext JS 5 core concepts and DOM manipulation.