Angular 2 Example - QuickStart

<!DOCTYPE html>
<html>

  <head>
    <title>Angular 2 - jQuery example </title>

    <link href="https://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" type="text/css" />
    <link href="https://cdnjs.cloudflare.com/ajax/libs/chosen/1.4.2/chosen.css" rel="stylesheet" type="text/css" />
    
    <script src="https://code.jquery.com/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/chosen/1.4.2/chosen.jquery.js"></script>


    <!-- 1. Load libraries -->
    <script src="https://code.angularjs.org/2.0.0-beta.1/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="https://code.angularjs.org/2.0.0-beta.1/Rx.js"></script>
    <script src="https://code.angularjs.org/2.0.0-beta.1/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>
    <ng-chosen>Loading...</ng-chosen>
  </body>

</html>

import {bootstrap}    from 'angular2/platform/browser';
import {Component, ElementRef, AfterViewInit} from 'angular2/core';

declare var jQuery:JQueryStatic;

@Component({
    selector: 'ng-chosen',
    template:`<select>
        <option *ngFor="#item of items" [value]="item" [selected]="item == selectedValue">{{item}} option</option>
        </select>
        <h4> {{selectedValue}}</h4>`})
export class NgChosenComponent implements AfterViewInit {
    static chosenInitialized = false;
    items = ['First', 'Second', 'Third'];
    selectedValue = 'Second';

    constructor(private el:ElementRef) {
    }

    ngAfterViewInit() {
        if(!NgChosenComponent.chosenInitialized) {
            jQuery(this.el.nativeElement)
                .find('select')
                .chosen()
                .on('change', (e, args) => {
                    this.selectedValue = args.selected;
            });
            NgChosenComponent.chosenInitialized = true;
        }
    }
}

bootstrap(NgChosenComponent);