Angular中的ng-template及angular 使用ngTemplateOutlet 指令的方法

<ng-template #loading>
 <button (click)="login()">login</button>
 <button (click)="sigup()">sigup</button>
</ng-template>
<ng-container *ngTemplateOutlet="loading">
</ng-container>

import { Component } from '@angular/core';
@Component({
 selector: 'app-root',
 template: `
  <ng-template #stpl>
   Hello, Semlinker!
  </ng-template>
  <ng-template #atpl>
   Hello, Angular!
  </ng-template>
  <div [ngTemplateOutlet]="atpl"></div>
  <div [ngTemplateOutlet]="stpl"></div>
 `,
})
export class AppComponent { }

import { Component } from '@angular/core'; 
@Component({
 selector: 'app-root',
 template: `
  <ng-template #stpl let-message="message">
   <p>{{message}}</p>
  </ng-template>
  <ng-template #atpl let-msg="message">
   <p>{{msg}}</p>
  </ng-template>
  <ng-template #otpl let-msg>
   <p>{{msg}}</p>
  </ng-template>
  <div [ngTemplateOutlet]="atpl"
   [ngOutletContext]="context">
  </div>
  <div [ngTemplateOutlet]="stpl"
   [ngOutletContext]="context">
  </div>
  <div [ngTemplateOutlet]="otpl"
   [ngOutletContext]="context"> </div>
 `,
}) 
export class AppComponent {
 context = { message: 'Hello ngOutletContext!', 
  $implicit: 'Hello, Semlinker!' };
}