====== Variable d'un tableau ======


===== 1ère écriture =====


   const elements = this.state.clients.map(function (client) {
      return (
        <li>
          {client.nom} <button>X</button>
        </li>
      );
    });
    
==== 2ème écriture ====

   const elements = this.state.clients.map(client => ( <li>{client.nom} <button>X</button></li> ));