AngularJS指令中，ngif無效，ngIf纔行，注意區分大小寫

AngularJS指令中，ngif無效，ngIf纔行，注意區分大小寫

<div *ngIf="selectedHero">
  <h2>{{selectedHero.name | uppercase}} Details</h2>

  <div><span>id: </span>{{selectedHero.id}}</div>

  <div>
    <label>name:
      <input [(ngModel)]="selectedHero.name" placeholder="name">
    </label>
  </div>
</div>