<p>Ext JS 5 is a heavyweight JavaScript framework used by millions to build rich and interactive web applications. Its numerous widgets and advanced data package make it especially well-suited for enterprise class software. The framework encourages the creation of good architectures and is extremely customizable.</p> <p>Ext JS Essentials is aimed at giving you a fast-track understanding of Ext JS. This book covers the most important aspects of the framework in a concise but comprehensive way, ensuring your success using its many features.</p> <p>Written around an example application, the book is packed with practical insights into how the framework works, architecting your applications, working with data, and the many widgets on offer.</p>