uniapp实战 —— 竖排多级分类展示

<script setup lang="ts">
import { getCategoryTopAPI } from '@/apis/category'
import type { CategoryTopItem } from '@/types/category'
import { onLoad } from '@dcloudio/uni-app'
import { computed, ref } from 'vue'

// 获取分类列表数据
const categoryList = ref<CategoryTopItem[]>([])
const getCategoryTopData = async () => {
  const res = await getCategoryTopAPI()
  categoryList.value = res.result
}

// 提取当前二级分类数据
const subCategoryList = computed(() => {
  return categoryList.value[activeIndex.value]?.children || []
})

// 高亮下标
const activeIndex = ref(0)

onLoad(() => {
  getCategoryTopData()
})
</script>

<template>
  <view class="viewport">
    <!-- 分类 -->
    <view class="categories">
      <!-- 左侧：一级分类 -->
      <scroll-view class="primary" scroll-y>
        <view
          class="item"
          v-for="(item, index) in categoryList"
          :key="item.id"
          :class="{ active: index === activeIndex }"
          @tap="activeIndex = index"
        >
          <text class="name"> {{ item.name }} </text>
        </view>
      </scroll-view>
      <!-- 右侧：二级分类 -->
      <scroll-view class="secondary" scroll-y>
        <!-- 内容区域 -->
        <view class="panel" v-for="item in subCategoryList" :key="item.id">
          <view class="title">
            <text class="name">{{ item.name }}</text>
            <navigator class="more" hover-class="none">全部</navigator>
          </view>
          <view class="section">
            <navigator
              v-for="goods in item.goods"
              :key="goods.id"
              class="goods"
              hover-class="none"
              :url="`/pages/goods/goods?id=${goods.id}`"
            >
              <image class="image" :src="goods.picture"></image>
              <view class="name ellipsis">{{ goods.name }}</view>
              <view class="price">
                <text class="symbol">¥</text>
                <text class="number">{{ goods.price }}</text>
              </view>
            </navigator>
          </view>
        </view>
      </scroll-view>
    </view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  overflow: hidden;
}
.viewport {
  height: 100%;
  display: flex;
  flex-direction: column;
}
/* 分类 */
.categories {
  flex: 1;
  min-height: 400rpx;
  display: flex;
}
/* 一级分类 */
.primary {
  overflow: hidden;
  width: 180rpx;
  flex: none;
  background-color: #f6f6f6;
  .item {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 96rpx;
    font-size: 26rpx;
    color: #595c63;
    position: relative;
    &::after {
      content: '';
      position: absolute;
      left: 42rpx;
      bottom: 0;
      width: 96rpx;
      border-top: 1rpx solid #e3e4e7;
    }
  }
  .active {
    background-color: #fff;
    &::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      width: 8rpx;
      height: 100%;
      background-color: #27ba9b;
    }
  }
}
.primary .item:last-child::after,
.primary .active::after {
  display: none;
}
/* 二级分类 */
.secondary {
  background-color: #fff;
  .carousel {
    height: 200rpx;
    margin: 0 30rpx 20rpx;
    border-radius: 4rpx;
    overflow: hidden;
  }
  .panel {
    margin: 0 30rpx 0rpx;
  }
  .title {
    height: 60rpx;
    line-height: 60rpx;
    color: #333;
    font-size: 28rpx;
    border-bottom: 1rpx solid #f7f7f8;
    .more {
      float: right;
      padding-left: 20rpx;
      font-size: 24rpx;
      color: #999;
    }
  }
  .more {
    &::after {
      font-family: 'erabbit' !important;
      content: '\e6c2';
    }
  }
  .section {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    padding: 20rpx 0;
    .goods {
      width: 150rpx;
      margin: 0rpx 30rpx 20rpx 0;
      &:nth-child(3n) {
        margin-right: 0;
      }
      image {
        width: 150rpx;
        height: 150rpx;
      }
      .name {
        padding: 5rpx;
        font-size: 22rpx;
        color: #333;
      }
      .price {
        padding: 5rpx;
        font-size: 18rpx;
        color: #cf4444;
      }
      .number {
        font-size: 24rpx;
        margin-left: 2rpx;
      }
    }
  }
}
</style>

import type { CategoryTopItem } from '@/types/category'
import { http } from '@/utils/http'

/**
 * 分类列表
 */
export const getCategoryTopAPI = () => {
  return http<CategoryTopItem[]>({
    method: 'GET',
    url: '/category/top',
  })
}

import type { GoodsItem } from './global'

/** 一级分类项 */
export type CategoryTopItem = {
  /** 二级分类集合[ 二级分类项 ] */
  children: CategoryChildItem[]
  /** 一级分类id */
  id: string
  /** 一级分类图片集[ 一级分类图片项 ] */
  imageBanners: string[]
  /** 一级分类名称 */
  name: string
  /** 一级分类图片 */
  picture: string
}

/** 二级分类项 */
export type CategoryChildItem = {
  /** 商品集合[ 商品项 ] */
  goods: GoodsItem[]
  /** 二级分类id */
  id: string
  /** 二级分类名称 */
  name: string
  /** 二级分类图片 */
  picture: string
}

/** 通用商品类型 */
export type GoodsItem = {
  /** 商品描述 */
  desc: string
  /** 商品折扣 */
  discount: number
  /** id */
  id: string
  /** 商品名称 */
  name: string
  /** 商品已下单数量 */
  orderNum: number
  /** 商品图片 */
  picture: string
  /** 商品价格 */
  price: number
}