When working with buttons and toolbars, we will definitely need to arrange them whenever we use window or panel components. Toolbars are a great way of adding buttons and menus, and we can create button groups. However, we also need to understand how to handle events to execute actions. We can add actions to our widgets using callbacks and events to process user interaction.

In this chapter, you are going to learn how to create buttons and toolbars and how to handle an event (or events) in order to begin with user interaction on the Ext JS UI.