Introducing Ionic 2 (Video 4)

The video tutorial covers various methods to run and test an Ionic app, including using the 'ionic serve' command with the lab feature for browser testing and setting up emulators for more realistic testing. It also discusses the process of building an app using the iTunes API, highlighting features like search functionality, action sheets, and navigation. The tutorial concludes with a summary and a preview of the next steps in the course.

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