Attribute Directives – Change appearance/behavior (e.g., ngClass, ngStyle)?

Short answer: Examples: <!-- *ngIf --> <div *ngIf="user.isLoggedIn">Welcome, {{ user.name }}</div> <!-- *ngFor --> <li *ngFor="let item of items">{{ item }}</li> Real-Time Example: In a to-do app, *ngFor is used to loop through tasks and display them.

Real-world example (ShopNest)

A shared CartService is injected into header and product pages so both see the same cart count.

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.