So are you aiming to build high-performing web and mobile UIs using ExtJS? Then go through the following five examples of a successful Ext js tutorial for beginners. Ext Js is a robust Javascript framework that enables developers to build applications with modern UI designs. This article describes five Sencha extjs examples tutorials for beginners, from generating an Ext Js application to adding a Chart component to the application.Develop high-performing grids using Ext Js Grid Library!