answer-mini/wechat-app/static/vant/tabs/index.wxml

<wxs src="../wxs/utils.wxs" module="utils" />
<wxs src="./index.wxs" module="getters" />

<view class="custom-class {{ utils.bem('tabs', [type]) }}">
  <van-sticky
    disabled="{{ !sticky }}"
    z-index="{{ zIndex }}"
    offset-top="{{ offsetTop }}"
    container="{{ container }}"
    bind:scroll="onTouchScroll"
  >
    <view class="{{ utils.bem('tabs__wrap', { scrollable }) }} {{ type === 'line' && border ? 'van-hairline--top-bottom' : '' }}">
      <slot name="nav-left" />

      <scroll-view
        scroll-x="{{ scrollable }}"
        scroll-with-animation
        scroll-left="{{ scrollLeft }}"
        class="{{ utils.bem('tabs__scroll', [type]) }}"
        style="{{ color ? 'border-color: ' + color : '' }}"
      >
        <view class="{{ utils.bem('tabs__nav', [type, { complete: !ellipsis }]) }} nav-class" style="{{ getters.tabCardTypeBorderStyle(color, type) }}">
          <view wx:if="{{ type === 'line' }}" class="van-tabs__line" style="{{ lineStyle }}" />
          <view
            wx:for="{{ tabs }}"
            wx:key="index"
            data-index="{{ index }}"
            class="{{ getters.tabClass(index === currentIndex, ellipsis) }} {{ utils.bem('tab', { active: index === currentIndex, disabled: item.disabled, complete: !ellipsis }) }}"
            style="{{ getters.tabStyle(index === currentIndex, ellipsis, color, type, item.disabled, titleActiveColor, titleInactiveColor, swipeThreshold, scrollable) }}"
            bind:tap="onTap"
          >
            <view class="{{ ellipsis ? 'van-ellipsis' : '' }}" style="{{ item.titleStyle }}">
              {{ item.title }}
              <van-info
                wx:if="{{ item.info !== null || item.dot }}"
                info="{{ item.info }}"
                dot="{{ item.dot }}"
                custom-class="van-tab__title__info"
              />
            </view>
          </view>
        </view>
      </scroll-view>

      <slot name="nav-right" />
    </view>
  </van-sticky>

  <view
    class="van-tabs__content"
    bind:touchstart="onTouchStart"
    bind:touchmove="onTouchMove"
    bind:touchend="onTouchEnd"
    bind:touchcancel="onTouchEnd"
  >
    <view
      class="{{ utils.bem('tabs__track', [{ animated }]) }} van-tabs__track"
      style="{{ getters.trackStyle({ duration, currentIndex, animated }) }}"
    >
      <slot />
    </view>
  </view>
</view>