I run ngFor and I need that some attribute inside the loop would change it's value by adding to it ngFor index. That's mean that each div that is created in ngFor will have uniq attribute value.
Source :

```
<div class="class1" *ngFor="let item of items; let i= index">
    <div class="card-header" role="tab" id="Id">
        <h1>Hello</h1>
    </div>

```

I want to bind **id** to get it's value: Id0 when index=0.

```
<div class="card-header" role="tab" [attr.id]="Id+'i'"> Doesn't work :(

```