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ANGULAR *NGFOR

PARA PODER RECORRER UNA ARRAY, OBJECT O JSON:

people = ["juan", "jose", "Rick"];

people2 = [
  {firstName: "juan", lastName: "martinez"},
  {firstName: "juan", lastName: "martinez"},
  {firstName: "juan", lastName: "martinez"},
  ];

<ul>
  <li *ngFor="let person of people; let i = index">
      {{i + 1}} {{person}}
  </li>
</ul>

OBJECT:

<ul>
  <li *ngFor="let person of people2">
      {{person.firstName}} {{person.lastName}}
  </li>
</ul>