Stosowanie identyfikatorów dla NGFOR
<li *ngFor="let episode of episodes; let i = index">
<div id="{{ 'wave' + i }}"></div>
</li>
Wrong Wallaby
<li *ngFor="let episode of episodes; let i = index">
<div id="{{ 'wave' + i }}"></div>
</li>
<div [id]="'demo'+this.dynamic_id"></div>