Índice NGFOR
<ul>
<li *ngFor="let item of items; let i = index" [attr.data-index]="i">
{{item}}
</li>
</ul>
2 Programmers 1 Bug
<ul>
<li *ngFor="let item of items; let i = index" [attr.data-index]="i">
{{item}}
</li>
</ul>
<li *ngFor="let item of items; index as i; trackBy: trackByFn">...</li>
content_copy
<li *ngFor="let user of users; index as i; first as isFirst">
{{i}}/{{users.length}}. {{user}} <span *ngIf="isFirst">default</span>
</li>