wxhuanart/miniprogram/miniprogram_npm/tdesign-miniprogram/navbar/navbar.wxml

<view class="{{classPrefix}} {{fixedClass}} {{visibleClass}} t-class" style="{{boxStyle}}">
  <view wx:if="{{fixed}}" class="{{classPrefix}}__placeholder"></view>
  <view class="{{classPrefix}}__content" style="{{contentStyle}}">
    <block>
      <view class="{{classPrefix}}__left t-class-left">
        <slot name="capsule" />
        <!-- 如果传入leftIcon和homeIcon则展示胶囊 -->
        <block wx:if="{{hasBackIcon && hasHomeIcon}}">
          <view class="{{classPrefix}}__capsule t-class-capsule">
            <view class="{{classPrefix}}__btn {{classPrefix}}__btn--back t-class-nav-btn" bindtap="goBack">
              <t-icon
                wx:if="{{leftIcon!=='slot'}}"
                name="{{leftIcon}}"
                class="{{classPrefix}}__capsule-icon t-class-left-icon"
              />
              <slot name="left-icon" class="t-class-left-icon"></slot>
            </view>
            <view class="{{classPrefix}}__btn {{classPrefix}}__btn--home t-class-nav-btn" bindtap="goHome">
              <t-icon
                wx:if="{{homeIcon!=='slot'}}"
                name="{{homeIcon}}"
                class="{{classPrefix}}__capsule-icon t-class-home-icon"
              />
              <slot name="home-icon" class="t-class-home-icon"></slot>
            </view>
          </view>
        </block>
        <!-- 否则无胶囊展示 -->
        <block wx:else>
          <view wx:if="{{hasBackIcon}}" class="{{classPrefix}}__btn {{classPrefix}}__btn--back" bindtap="goBack">
            <t-icon
              wx:if="{{leftIcon!=='slot'}}"
              name="{{leftIcon}}"
              class="{{classPrefix}}__capsule-icon t-class-left-icon"
            />
            <slot name="left-icon" class="t-class-left-icon"></slot>
          </view>
          <view wx:if="{{hasHomeIcon}}" class="{{classPrefix}}__btn {{classPrefix}}__btn--home" bindtap="goHome">
            <t-icon
              wx:if="{{homeIcon!=='slot'}}"
              name="{{homeIcon}}"
              class="{{classPrefix}}__capsule-icon t-class-home-icon"
            />
            <slot name="home-icon" class="t-class-home-icon"></slot>
          </view>
        </block>
      </view>
      <view class="{{classPrefix}}__center t-class-center">
        <block wx:if="{{title}}">
          <slot wx:if="{{title === 'slot'}}" name="title" class="t-class-title"></slot>
          <text wx:else class="{{classPrefix}}__center-title t-class-title">{{showTitle}}</text>
        </block>
      </view>
    </block>
  </view>
</view>