scalajs-react:如何在状态对象中使用Seq中的多行文本域？

case class MyState(textAreas: Seq[String] = Seq.empty)

class MyComponent extends Component {
  // ...

  def render(): VdomElement = {
    val textAreas = state.textAreas.zipWithIndex.map { case (value, index) =>
      <.textarea(
        ^.value := value,
        ^.onChange ==> { event: ReactEventFromInput =>
          val newValue = event.target.value
          setState(state.copy(textAreas = state.textAreas.updated(index, newValue)))
        }
      )
    }

    <.div(
      textAreas.toVdomArray
    )
  }
}

ReactDOM.render(
  MyComponent().render(),
  dom.document.getElementById("root")
)