Angular + Typescript Demo Plunk

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <script type="text/javascript" charset="utf-8">
      window.AngularVersionForThisPlunker = 'latest'
    </script>
    <title>angular playground</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
    <script src="https://unpkg.com/zone.js/dist/zone.js"></script>
    <script src="https://unpkg.com/zone.js/dist/long-stack-trace-zone.js"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
    <script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script>
    <script src="config.js"></script>

    <link href="https://cdn.bootcss.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet">
    
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <my-app>
    loading...
  </my-app>
  </body>

</html>

/* Styles go here */

.hide{
  display:none;
}

### Angular Starter Plunker - Typescript

var angularVersion;
if(window.AngularVersionForThisPlunker === 'latest'){
  angularVersion = ''; //picks up latest
}
else {
  angularVersion = '@' + window.AngularVersionForThisPlunker;
}

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  //map tells the System loader where to look for things
  map: {
    
    'app': './src',
    '@angular/core': 'npm:@angular/core'+ angularVersion + '/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common' + angularVersion + '/bundles/common.umd.js',
    '@angular/compiler': 'npm:@angular/compiler' + angularVersion  + '/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic' + angularVersion + '/bundles/platform-browser-dynamic.umd.js',
    '@angular/http': 'npm:@angular/http' + angularVersion + '/bundles/http.umd.js',
    '@angular/router': 'npm:@angular/router' + angularVersion +'/bundles/router.umd.js',
    '@angular/forms': 'npm:@angular/forms' + angularVersion + '/bundles/forms.umd.js',
    '@angular/animations': 'npm:@angular/animations' + angularVersion + '/bundles/animations.umd.js',
    '@angular/platform-browser/animations': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser-animations.umd.js',
    '@angular/animations/browser': 'npm:@angular/animations' + angularVersion + '/bundles/animations-browser.umd.js',
    
    '@angular/core/testing': 'npm:@angular/core' + angularVersion + '/bundles/core-testing.umd.js',
    '@angular/common/testing': 'npm:@angular/common' + angularVersion + '/bundles/common-testing.umd.js',
    '@angular/compiler/testing': 'npm:@angular/compiler' + angularVersion + '/bundles/compiler-testing.umd.js',
    '@angular/platform-browser/testing': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser-testing.umd.js',
    '@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic' + angularVersion + '/bundles/platform-browser-dynamic-testing.umd.js',
    '@angular/http/testing': 'npm:@angular/http' + angularVersion + '/bundles/http-testing.umd.js',
    '@angular/router/testing': 'npm:@angular/router' + angularVersion + '/bundles/router-testing.umd.js',
    'tslib': 'npm:tslib@1.6.1',
    'rxjs': 'npm:rxjs',
    'typescript': 'npm:typescript@2.2.1/lib/typescript.js'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
      defaultExtension: 'js'
    }
  }
});

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)

//our root app component
import {Component, NgModule, VERSION} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import {FormsModule  } from '@angular/forms';
import { HeroSonComponent } from './hero-son.component';
@Component({
  selector: 'my-app',
  template: `
    <div>
        <app-hero-son [list]="list"></app-hero-son>
    </div>
  `,
})
export class App {
  name:string;
  
   list:Array<Object> = [
        {
            name: '北京',
            id:1,
            children: [
                {
                    name: '朝阳区',
                    id:1.1,
                    children: [
                        {
                            name: '三里屯',
                            id:'1.1.1'
                        }
                    ]
                },
                {
                    name: '石景山区',
                    id:1.2,
                },
                {
                    name: '大兴区',
                    id:1.3,
                }
            ]
        },
        {
            name: '河北',
            id:2 ,
            children:[
                {
                    name: '沧州',
                    id:2.1,
                },
                {
                    name: '石家庄',
                    id:2.2,
                }
            ]
        }
    ];
    
    
  constructor() {
    this.name = `Angular! v${VERSION.full}`
  }
  
}

@NgModule({
  imports: [ BrowserModule,FormsModule ],
  declarations: [ App ,HeroSonComponent ],
  bootstrap: [ App ]
})
export class AppModule {}

import {Component, OnInit, Input, EventEmitter, Output} from '@angular/core';

@Component({
    selector: 'app-hero-son',
    template: `<ul>
    <li *ngFor="let item of list">
        <input type="checkbox" [(ngModel)]="item.checked"/> <a  href="javascript:void(0)" (click)="toggle(item)">{{item.name}}</a>
        <ng-container *ngTemplateOutlet="greet; context: item" ></ng-container>
    </li>
</ul>
<ng-template #greet let-children="children" let-hide="hide">
    <app-hero-son [list]="children" *ngIf="children" [ngClass]="{'hide': hide}"></app-hero-son>
</ng-template>
`
})
export class HeroSonComponent implements OnInit {

    constructor() {
    }

    @Input() list: Array<Object>;
    

    ngOnInit() {

    }
    toggle(item) {
        item.hide = !item.hide;
    }
  
}