显示特定类型的下拉项

Question

我有这个下拉列表，我想根据商品类型来限制：

<div class="dropdown-menu">
  <a class="dropdown-item" [routerLink]="['/panel/virtual_terminal/Refund']">Refund</a>
  <a class="dropdown-item" [routerLink]="['/panel/virtual_terminal/Void']">Void</a>
  <a class="dropdown-item" [routerLink]="['/panel/transactions', transaction.id]">Modify</a>
  <a class="dropdown-item" [routerLink]="['/panel/transactions', transaction.id]">Reconcile</a>
  <a class="dropdown-item" [routerLink]="['/panel/transactions', transaction.id]">Add to blacklist</a>
</div>

仅当transaction.type的值是“ sale”和“ capture”时，如何显示退款项目类型？

只有包含此类型列表时，才可以呈现此下拉项吗？