Answers for "ngFor angular setting an index"

ngfor index

<ul>
    <li *ngFor="let item of items; let i = index" [attr.data-index]="i">
        {{item}}
    </li>
</ul>

ngfor index

/*
ngFor with index in angular is used here for generating 'li' element till the studentDetails array length.
And also make a note if you are using angular 1 then you have to replace 'let' with '#', but its ok if you are using angular 2 or above.
*/

<ul>
    <li *ngFor="let student of studentDetails; index as i;" [attr.data-index]="i">
        {{student}}
    </li>
</ul>

/*
I hope it will help you.
Namaste
*/

ngfor index

<ul>
  <li *ngFor="let food of menu; index as i">
      {{ index }},{{ food }}
  </li>
</ul>
<!-- index starts from 0 
This gives an undordered list of food items in a menu, with the first item as 0-->