laundry/miniprogram_npm/@vant/weapp/area/index.wxml

<wxs src="./index.wxs" module="computed" />

<van-picker
  class="van-area__picker"
  active-class="active-class"
  toolbar-class="toolbar-class"
  column-class="column-class"
  show-toolbar
  value-key="name"
  title="{{ title }}"
  loading="{{ loading }}"
  columns="{{ computed.displayColumns(columns, columnsNum) }}"
  item-height="{{ itemHeight }}"
  visible-item-count="{{ visibleItemCount }}"
  cancel-button-text="{{ cancelButtonText }}"
  confirm-button-text="{{ confirmButtonText }}"
  bind:change="onChange"
  bind:confirm="onConfirm"
  bind:cancel="onCancel"
/>