This book will help you to utilize Ext JS to its full potential and will show you how to create a complete Ext JS application from scratch. You'll begin by learning how to create the project's structure, splash screen, login screen, dynamic menus, open screens dynamically and master-detail grids, and much more. You will also learn how to export data to Excel including PDFs and images, while always keeping best practices in mind. Following this, you'll discover how to use the MVC architecture, the new MVVM. Next, you'll learn how to customize themes and how to prepare the application to be ready for deployment upon completion. By the end of the book, you will have learned everything you need to know to truly master Ext JS and start building advanced applications.