Angular의 템플릿 구문에 대한 자세한 설명

@Component({
  selector: 'app-test-interpolation',
  templateUrl: './test-interpolation.component.html',
  styleUrls: ['./test-interpolation.component.css']
})
export class TestInterpolationComponent implements OnInit {

  title = '插值表达式';

  constructor() { }

  ngOnInit() {
  }

  getValue(): string {
    return '值';
  }
}

<div class="panel panel-primary">
  <div class="panel-heading">基插值语法</div>
  <div class="panel-body">
    <h3>
      欢迎来到 {{title}}！
    </h3>
    <h3>2+2 = {{2 + 2}}</h3>
    <h3>调用方法{{getValue()}}</h3>
  </div>
</div>

@Component({
  selector: 'app-test-template-variables',
  templateUrl: './test-template-variables.component.html',
  styleUrls: ['./test-template-variables.component.css']
})
export class TestTempRefVarComponent implements OnInit {

  constructor() { }

  ngOnInit() {
  }

  public saveValue(value: string): void {
    console.log(value);
  }
}

<div class="panel panel-primary">
  <div class="panel-heading">模板变量</div>
  <div class="panel-body">
    <input #templateInput>
    <p>{{templateInput.value}}</p>
    <button class="btn btn-success" (click)="saveValue(templateInput.value)">局部变量</button>
  </div>
</div>

@Component({
  selector: 'app-test-value-bind',
  templateUrl: './test-value-bind.component.html',
  styleUrls: ['./test-value-bind.component.css']
})
export class TestValueBindComponent implements OnInit {

  public imgSrc = './assets/imgs/1.jpg';

  constructor() { }

  ngOnInit() {
  }
}

<div class="panel panel-primary">
  <div class="panel-heading">单向值绑定</div>
  <div class="panel-body">
    <img [src]="imgSrc" />
  </div>
</div>

@Component({
  selector: 'app-test-event-binding',
  templateUrl: './test-event-binding.component.html',
  styleUrls: ['./test-event-binding.component.css']
})
export class TestEventBindingComponent implements OnInit {

  constructor() { }

  ngOnInit() {
  }

  public btnClick(event: any): void {
    console.log(event + '测试事件绑定！');
  }
}

<div class="panel panel-primary">
    <div class="panel-heading">事件绑定</div>
    <div class="panel-body">
        <button class="btn btn-success" (click)="btnClick($event)">点击按钮</button>
    </div>
</div>

@Component({
  selector: 'app-test-twoway-binding',
  templateUrl: './test-twoway-binding.component.html',
  styleUrls: ['./test-twoway-binding.component.css']
})
export class TestTwowayBindingComponent implements OnInit {

  public fontSizePx = 14;

  constructor() { }

  ngOnInit() {
  }

}

<div class="panel panel-primary">
  <div class="panel-heading">双向绑定</div>
  <div class="panel-body">
    <app-font-resizer [(size)]="fontSizePx"></app-font-resizer>
    <div [style.font-size.px]="fontSizePx">Resizable Text</div>
  </div>
</div>

@Component({
  selector: 'app-font-resizer',
  templateUrl: './font-resizer.component.html',
  styleUrls: ['./font-resizer.component.css']
})
export class FontResizerComponent implements OnInit {

  @Input()
  size: number | string;

  @Output()
  sizeChange = new EventEmitter<number>();

  constructor() { }

  ngOnInit() {
  }

  decrement(): void {
    this.resize(-1);
  }

  increment(): void {
    this.resize(+1);
  }

  resize(delta: number) {
    this.size = Math.min(40, Math.max(8, +this.size + delta));
    this.sizeChange.emit(this.size);
  }
}

<div style="border: 2px solid #333">
  <p>这是子组件</p>
  <button (click)="decrement()" title="smaller">-</button>
  <button (click)="increment()" title="bigger">+</button>
  <label [style.font-size.px]="size">FontSize: {{size}}px</label>
</div>

@Component({
  selector: 'app-test-ng-if',
  templateUrl: './test-ng-if.component.html',
  styleUrls: ['./test-ng-if.component.css']
})
export class TestNgIfComponent implements OnInit {

  isShow = true;

  constructor() { }

  ngOnInit() {
  }
}

<div class="panel panel-primary">
  <div class="panel-heading">*ngIf的用法</div>
  <div class="panel-body">
    <p *ngIf="isShow" style="background-color:#ff3300">显示内容</p>
  </div>
</div>

@Component({
  selector: 'app-test-ng-for',
  templateUrl: './test-ng-for.component.html',
  styleUrls: ['./test-ng-for.component.css']
})
export class TestNgForComponent implements OnInit {

  races = [
    {name: 'star'},
    {name: 'kevin'},
    {name: 'kent'}
  ];

  constructor() { }

  ngOnInit() {
  }

}

<div class="panel panel-primary">
  <div class="panel-heading">*ngFor用法</div>
  <div class="panel-body">
    <h3>名字列表</h3>
    <ul>
      <li *ngFor="let name of names;let i=index;">
       {{i}}-{{name.name}}
      </li>
    </ul>
  </div>
</div>

@Component({
  selector: 'app-test-ng-switch',
  templateUrl: './test-ng-switch.component.html',
  styleUrls: ['./test-ng-switch.component.css']
})
export class TestNgSwitchComponent implements OnInit {

  status = 1;

  constructor() { }

  ngOnInit() {
  }

}

<div class="panel panel-primary">
  <div class="panel-heading">ngSwitch用法</div>
  <div class="panel-body">
    <div [ngSwitch]="status">
      <p *ngSwitchCase="0">Good</p>
      <p *ngSwitchCase="1">Bad</p>
      <p *ngSwitchDefault>Exception</p>
    </div>
  </div>
</div>

.saveable {
    font-size: 18px;
}

.modified {
    font-weight: bold;
}

.special {
    background-color: #ff3300;
}