How it works...

Note that Ionic serve is actually watching everything under the /src folder and transpiring the TypeScript code into JavaScript under /www on the fly. This makes sense because there is no need for the system to scan through every single file when the probability of it changing is very small.

While the web server is running, you can go back to the IDE and continue coding. For example, let's open page1.html or any other template file and change the first line to this:

<ion-view view-title="Updated Playlists">

Go back to the web browser where Ionic opened the new page; the app interface will change the title bar right away without requiring you to refresh the browser. This is a very nice feature when there is a lot of back and forth between code changes and instantly checking how it works or looks in the app.