Binding and event system

We are going to change gears for a few minutes to touch on two other related topics that not only affect the Declarative UI, but your whole application. You need to be able to respond to any event, like finger touches, downloads completing, and the application being stopped. In addition to the event system, a related subject is binding, as binding typically handles part of the event automatically. So, let's dig into these two areas of NativeScript.