Answers for "ng if and else angular"

ngif else

<div *ngIf="isLoggedIn; else loggedOut">
  Welcome back, friend.
</div>

<ng-template #loggedOut>
  Please friend, login.
</ng-template>

ngif else

<div *ngIf="isValid;else other_content">
    content here ...
</div>

<ng-template #other_content>other content here...</ng-template>