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angular-2-demo's Introduction

Angular 2 Preview

Setup

In one terminal session:

npm install
npm run tsc

In another terminal session:

npm start

Then open http://localhost:3000

Get familiar

  • Add some heroes
  • Click on some heroes
  • Edit the names of some heroes

Activity #1

Create a new component that will show the number of Heroes in the upper right-hand corner.

Step 1

Create a new component. In app/app.ts, below line 3, add the following:

@Component({
  selector: 'counter',
  template: `{{heroes.length}}`,
  properties: ['heroes']
})
class CountComponent {
  public heroes: Hero[]
}

Step 2

Tell the AppComponent about the new component by changing the directives line to:

directives: [FORM_DIRECTIVES, CORE_DIRECTIVES, CountComponent],

Step 3

Use the new component. In public/partials/heroes.html replace the comment with:

<counter [heroes]="heroes"></counter>

Activity #2

Experiment how ViewEncapsulation options change the markup. Options are:

  • None
  • Emulated
  • Native

With each change, add and remove the @import url(/bootstrap/dist/css/bootstrap.min.css); line.

http://blog.thoughtram.io/angular/2015/06/29/shadow-dom-strategies-in-angular2.html

Activity #3

Look at better alternatives:

Resources

Stretch Goals

  • Add the ability to persist edits to the server (requires server + client changes)
    • BONUS: prevent the sidebar from updating when you change the text in the edit field
  • Add the ability to delete Heroes

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