What is ngIfElse and how is it used in templates?

Short answer: *ngIf supports an else clause to show alternative template when condition is false. Use <ng-template> for the else block.

Example code

<div *ngIf="isLoggedIn; else loginPrompt"> Welcome back! </div> <ng-template #loginPrompt> Please log in. </ng-template>

Real-world example (ShopNest)

ShopNest’s ProductListComponent binds *ngFor to products and uses (click) to add to cart.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.