Html Element를 보여주거나 안 보여주거나 한다.
<div *ngIf="false"> Codevolution </div>
2.ng-template사용
<div *ngIf="displayName; else elseBlock"> Codevolution </div> <ng-template #elseBlock> <h2> name is hidden </h2> </ng-template>
3.thenBlock사용
<div *ngIf="displayName; then thenBlock; else elseBlock"></div> <ng-template #thenBlock> <h2>Codevolution</h2> </ng-template> <ng-template #elseBlock> <h2> name is hidden </h2> </ng-template>