Angular 2 Example - QuickStart

import {Component} from 'angular2/core';

@Component({
	selector: 'my-app',
	template: '<h1>My First Angular 2 App</h1>'
})
export class AppComponent { }

/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/

import {Component} from 'angular2/core';
import {bootstrap} from 'angular2/platform/browser';
import {Control,ControlGroup,FormBuilder,FORM_DIRECTIVES,Validators} from 'angular2/common';

@Component({
  selector: 'my-app',
  template: `
  <form [ngFormModel]="form" >
    <select [ngFormControl]="nationalityCtrl" >
      <option *ngFor="#nationality of nationalities" [value]="nationality" >{{nationality}}</option>
    </select><br>
    <input *ngIf="form.value.nationality == 'Foreigner'" type="text" [ngFormControl]="countryCtrl" placeholder="Country Name" />
    <button class="btn btn-primary" [disabled]="!form.valid" >Submit</button>
  </form>
  `,
  directives: [FORM_DIRECTIVES]
})
class MainApp{
  public nationalities = ["Foreigner","Local"];
  public form:ControlGroup;
  public nationalityCtrl:Control;
  public countryCtrl:Control;

  constructor(private _fb:FormBuilder){
  var self = this;

  this.nationalityCtrl = new Control("",Validators.compose([Validators.required]));
  this.countryCtrl = new Control("",Validators.compose([function(control:Control){
      if(self.nationalityCtrl.value == "Foreigner" && !control.value){
        return {invalid: true};
      }
    }]));

    this.form = this._fb.group({
      nationality: this.nationalityCtrl,
      country: this.countryCtrl
    });
  }
}
bootstrap(MainApp);

/* Master Styles */
h1 {
  color: #369; 
  font-family: Arial, Helvetica, sans-serif;   
  font-size: 250%;
}
h2, h3 { 
  color: #444;
  font-family: Arial, Helvetica, sans-serif;   
  font-weight: lighter;
}
body { 
  margin: 2em; 
}
body, input[text], button { 
  color: #888; 
  font-family: Cambria, Georgia; 
}
a {
  cursor: pointer;
  cursor: hand;
}
button {
  font-family: Arial;
  background-color: #eee;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  cursor: hand;
}
button:hover {
  background-color: #cfd8dc;
}
button:disabled {
  background-color: #eee;
  color: #aaa; 
  cursor: auto;
}

/* Navigation link styles */
nav a {
  padding: 5px 10px;
  text-decoration: none;
  margin-top: 10px;
  display: inline-block;
  background-color: #eee;
  border-radius: 4px;
}
nav a:visited, a:link {
  color: #607D8B;
}
nav a:hover {
  color: #039be5;
  background-color: #CFD8DC;
}
nav a.router-link-active {
  color: #039be5;
}

/* items class */
.items {
  margin: 0 0 2em 0;
  list-style-type: none;
  padding: 0;
  width: 24em;
}
.items li {
  cursor: pointer;
  position: relative;
  left: 0;
  background-color: #EEE;
  margin: .5em;
  padding: .3em 0;
  height: 1.6em;
  border-radius: 4px;
}
.items li:hover {
  color: #607D8B;
  background-color: #DDD;
  left: .1em;
}
.items li.selected:hover {
  background-color: #BBD8DC;
  color: white;
}
.items .text {
  position: relative;
  top: -3px;
}
.items {
  margin: 0 0 2em 0;
  list-style-type: none;
  padding: 0;
  width: 24em;
}
.items li {
  cursor: pointer;
  position: relative;
  left: 0;
  background-color: #EEE;
  margin: .5em;
  padding: .3em 0;
  height: 1.6em;
  border-radius: 4px;
}
.items li:hover {
  color: #607D8B;
  background-color: #DDD;
  left: .1em;
}
.items li.selected {
  background-color: #CFD8DC;
  color: white;
}

.items li.selected:hover {
  background-color: #BBD8DC;
}
.items .text {
  position: relative;
  top: -3px;
}
.items .badge {
  display: inline-block;
  font-size: small;
  color: white;
  padding: 0.8em 0.7em 0 0.7em;
  background-color: #607D8B;
  line-height: 1em;
  position: relative;
  left: -1px;
  top: -4px;
  height: 1.8em;
  margin-right: .8em;
  border-radius: 4px 0 0 4px;
}

/* everywhere else */
* { 
  font-family: Arial, Helvetica, sans-serif; 
}


/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/

<!DOCTYPE html>
<html>

  <head>
    <title>Angular 2 QuickStart</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link data-require="bootstrap-css@3.3.6" data-semver="3.3.6" rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.css" />
    <script data-require="jquery@*" data-semver="2.2.0" src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="styles.css" />
    <!-- 1. Load libraries -->
    <!-- IE required polyfills, in this exact order -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/es6-shim/0.35.0/es6-shim.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.20/system-polyfills.js"></script>
    <script src="https://npmcdn.com/angular2@2.0.0-beta.13/es6/dev/src/testing/shims_for_IE.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.13/angular2-polyfills.js"></script>
    <script src="https://code.angularjs.org/tools/system.js"></script>
    <script src="https://npmcdn.com/typescript@1.8.9/lib/typescript.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.13/Rx.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.13/angular2.dev.js"></script>
    <!-- 2. Configure SystemJS -->
    <script>
      System.config({
        transpiler: 'typescript', 
        typescriptOptions: { emitDecoratorMetadata: true }, 
        packages: {'app': {defaultExtension: 'ts'}} 
      });
      System.import('app/main')
            .then(null, console.error.bind(console));
    </script>
  </head>

  <!-- 3. Display the application -->
  <body>
    <my-app>Loading...</my-app>
    <!-- 
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->
  </body>

</html>