angular中 *ngFor得到index

<ul>
    <li *ngFor="let item of items; let i = index">     
       {{item}}
    <i (click)="deleteThis(i)">x</i>
    </li>
</ul>

<ul>

</li>

</ul>

上面代码的

let i = index

1	let i = index

即可获得index

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