1.3 Structural directives

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <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>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

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

</html>

/* Styles go here */

### The plunk to go along with structural directives as described in my book here:

https://www.gitbook.com/book/tusharraj/how-i-learned-to-stop-worrying-and-love-angular2/edit#/edit/master/20-white-belt/23-ngif-and-ngfor.md?_k=n2edxb

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/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
    '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
    '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
    '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
    '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
    '@angular/animations': 'npm:@angular/animations/bundles/animations.umd.js',
    '@angular/platform-browser/animations': 'npm:@angular/platform-browser/bundles/platform-browser-animations.umd.js',
    '@angular/animations/browser': 'npm:@angular/animations/bundles/animations-browser.umd.js',
    
    '@angular/core/testing': 'npm:@angular/core/bundles/core-testing.umd.js',
    '@angular/common/testing': 'npm:@angular/common/bundles/common-testing.umd.js',
    '@angular/compiler/testing': 'npm:@angular/compiler/bundles/compiler-testing.umd.js',
    '@angular/platform-browser/testing': 'npm:@angular/platform-browser/bundles/platform-browser-testing.umd.js',
    '@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic-testing.umd.js',
    '@angular/http/testing': 'npm:@angular/http/bundles/http-testing.umd.js',
    '@angular/router/testing': 'npm:@angular/router/bundles/router-testing.umd.js',
    
    '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 { KickAssComponent } from './kick-ass/kick-ass.component';

@Component({
  selector: 'my-app',
  template: `<app-kick-ass></app-kick-ass>`,
})
export class App {
  name:string;
  constructor() {
    this.name = `Angular! v${VERSION.full}`
  }
}

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

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

@Component({
    selector: 'app-kick-ass',
    templateUrl: './src/kick-ass/kick-ass.component.html',
    styleUrls: ['./src/kick-ass/kick-ass.component.css']
})
export class KickAssComponent implements OnInit {
    alias: string;
    age: number;
    name: string;
    isReady: boolean = true;
    showLine: boolean = false;

    hitList: string[] = ['Joffrey', 'Cersei', 'Ilyn Payne', 'The Mountain','The Hound']

    constructor() {
        this.alias = 'Hit-Girl';
        this.name = 'Mindy';
    }

    ngOnInit() {
    }

    getProfile(): string {
        return `${this.name} is really ${this.alias}`;
    }

    gotHit() {
        // alert('You hit like a vegetarian');
        this.isReady = false;
        this.showLine = !this.showLine;
    }

    gotHitAgain() {
        alert('That was good!');
    }


}

<div class="kickAssWrapper">
    <p *ngIf="false" [style.color]="isReady ? 'navy' : 'red'">
        {{getProfile()}}
    </p>
    <button [class.afterFirstHit]="!isReady" (click)="gotHit()"> Hit Me </button>
    <p *ngIf="showLine"> You hit like a vegetarian. </p>
    <br>
    <br>
    <button *ngIf="false" [disabled]="isReady" (click)="gotHitAgain()"> Hit Me Again </button>
    <br>
    <br>

    <h1>Hit List</h1>

    <div *ngFor="let person of hitList; let idx=index">
        <input type="checkbox"> {{idx + 1}}. {{person}}
    </div>
</div>

.afterFirstHit{
    background-color: crimson;
    color: royalbule;
    height: 50px;
}

.kickAssWrapper{
    background-color: antiquewhite
}