Introducing Ionic 2 (Video 14)

The video tutorial introduces the use of an Ionic 2 model to display previews of songs or movies. It covers creating a page class without using the console, embedding templates directly in the class, and binding track data. The tutorial explains adding click handlers to open previews and using navigation parameters to pass data. It also demonstrates how to implement a close function for the model. The video concludes with a summary of the model's benefits and a preview of the next topic, which is the pull-to-refresh component.

What are navigation parameters and how are they used in this context?

Explain how the close method is implemented for the model.