This book is an exploration of the Ext JS 6 framework. The first part of the book guides you on how to upgrade an existing app to Ext JS 6. The book also guides you on how to work with dates in Ext JS 6, so that you will be in a position to implement this in your app. Strings are very important in any programming language, as they form the main data type. This book guides you on how to work with strings in Ext JS 6 programs. DOM (Data Object Manipulation) is also deeply explored, showing you how to perform it. The class system in Ext JS 6 is explored in this book, teaching you how to declare and use classes. Layouts and containers, which are very important for grouping the components of an app and how to use them, are explored in detail. The book also guides you on how to use the data package. Events are very good for handling the various actions of users. Here is preview of what you’ll learn: - Upgrading a Sencha Touch App Modern Toolkit of Ext JS 6 - Ext.data.Model-cfg Validators - ControllersExt.Anim - Arrays - Working with Dates - String - Data Object Manipulation - Class System - Layouts and Containers - Components - Data Package - Events