wxlitian/miniprogram/miniprogram_npm/tdesign-miniprogram/cascader/cascader.wxml

<t-popup visible="{{visible}}" placement="bottom" bind:visible-change="hide">
  <view style="{{ customStyle }}" class="{{name}}">
    <view class="{{name}}__title">
      <slot name="title" />
      {{title}}
    </view>
    <view class="{{name}}__close-btn" bind:tap="hide">
      <slot name="closeBtn" />
      <t-icon wx:if="{{closeBtn}}" size="24" name="close" />
    </view>
    <view class="{{name}}__content">
      <block wx:if="{{steps && steps.length}}">
        <view wx:if="{{theme == 'step'}}" class="{{name}}__steps">
          <view wx:for="{{steps}}" wx:key="index" class="{{name}}__step" bind:tap="onStepClick" data-index="{{index}}">
            <view
              class="{{name}}__step-dot {{name}}__step-dot--{{item !== defaultOptionLabel ? 'active' : ''}} {{name}}__step-dot--{{index === steps.length - 1 ? 'last' : ''}}"
            ></view>
            <view class="{{name}}__step-label {{name}}__step-label--{{index === stepIndex ? 'active' : ''}}">
              {{ item }}
            </view>
            <t-icon name="chevron-right" size="22" class="{{name}}__step-arrow" />
          </view>
        </view>
        <block wx:if="{{theme == 'tab'}}">
          <t-tabs id="tabs" value="{{stepIndex}}" bind:change="onTabChange" space-evenly="{{false}}">
            <t-tab-panel wx:for="{{steps}}" wx:key="index" value="{{index}}" label="{{item}}" />
          </t-tabs>
        </block>
      </block>
      <view wx:if="{{ subTitles && subTitles[stepIndex] }}" class="{{name}}__options-title"
        >{{subTitles[stepIndex]}}</view
      >
      <view
        class="{{name}}__options-container"
        style="width: {{items.length + 1}}00vw; transform: translateX(-{{stepIndex}}00vw)"
      >
        <scroll-view wx:for="{{items}}" wx:for-item="options" wx:key="index" class="{{name}}__options" scroll-y>
          <t-radio-group
            value="{{selectedValue[index]}}"
            keys="{{keys}}"
            options="{{options}}"
            bind:change="handleSelect"
            data-level="{{index}}"
            align="right"
            icon="line"
            borderless
          >
          </t-radio-group>
        </scroll-view>
      </view>
    </view>
  </view>
</t-popup>