Angular2 + Typescript display current dateTime component

<!DOCTYPE html>
<html>

  <head>
    <title>angular2 playground</title>
    <link href="style.css" rel="stylesheet" />
    <script src="https://code.angularjs.org/2.0.0-beta.0/angular2-polyfills.js"></script>
    <script src="https://code.angularjs.org/tools/system.js"></script>
    <script src="https://code.angularjs.org/tools/typescript.js"></script>
    <script src="config.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.0/Rx.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.0/angular2.min.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.0/http.min.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <my-app [myattr]="'vasia'">
    loading...
    </my-app>
  </body>

</html>

/* Styles go here */

### Angular2 Starter Plunker - Typescript - Beta 0

A simple plunker demonstrating Angular2 usage:
- Uses SystemJS + TypeScript to compile on the fly
- Includes binding, directives, http, pipes, and DI usage.

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  //map tells the System loader where to look for things
  map: {
    app: "./src"
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    }
  }
});

//main entry point
import {bootstrap} from 'angular2/platform/browser';
import {App} from './app';

bootstrap(App, [])
  .catch(err => console.error(err));

//our root app component
import {Component} from 'angular2/core'
import {Now} from 'now.ts'
@Component({
  selector: 'my-app',
  template: `
    <div>
      <now format="'h:mm:ss'"></now>
    </div>`,
  directives: [Now]
})
export class App {}

//our root app component
import {Component, Attribute} from 'angular2/core'

@Component({
  selector: 'now',
  template: `
      <h2 (updateTime)="updateMyTime()">{{date | date: format}}</h2>
    `
})
export class Now {
   private date;
   
  constructor(@Attribute("format") format) { 
    this.format = format;
    this.date =  new Date(); 
    
    setInterval(() => {
        this.date =  new Date();
     }, 1000);
  } 

}