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In Angular 2, to get the index (or the iteration number) of the current item, add a second part to the ngFor expression (after a semi-colon) as shown here.

<tr *ngFor="#item of data; #ndx = index">


Notice that I’m adding 1 to the output expression ({{ndx+1}}) because the index is zero-based. The data table row example shown above renders as follows:

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