This lessons implements the Search Pipe with a new SearchBox component so you can search through each todo. It also demonstrates the patterns used for components to interact with each other. Often generic components are used for handling user input then they forward on those events (using Outputs) to components more specific to your application.
Also shows one way to structure your project by feature and how all you need to do is update your import statements.
[Angular 2] Filter items with a custom search Pipe in Angular 2
原文：http://www.cnblogs.com/Answer1215/p/5309503.html