angularjs - angular component DOM add attribute key -


i'am looping on dom element of angular component ngfor 

  <td>        <button class="dropdown-item" idgroup={{compte_ingroup}} href="#">        action      </button>   </td>

my question know how add reference element create in loop. issue happen me ==> can't bind 'idgroup' since isn't known property of 'button'

please i'am doing wrong?

if have component template 

<td> ... </td>

you should provide property called idgroup, , when invoke component should this:

<app-mycomponent *ngfor="let myelement of elementslist" [idgroup]="myelement.idgroup"></app-movie>

and in component definition:

@component({     ... }) export class mycomponent {   @input() idgroup: any;    ... }

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