vue3 之商城项目

整体认识

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路由配置

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准备组件模版

<script setup></script><template><div class="xtx-goods-page"><div class="container"><div class="bread-container"><el-breadcrumb separator=">"><el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item><el-breadcrumb-item :to="{ path: '/' }">母婴</el-breadcrumb-item><el-breadcrumb-item :to="{ path: '/' }">跑步鞋</el-breadcrumb-item><el-breadcrumb-item>抓绒保暖，毛毛虫子儿童运动鞋</el-breadcrumb-item></el-breadcrumb></div><!-- 商品信息 --><div class="info-container"><div><div class="goods-info"><div class="media"><!-- 图片预览区 --><!-- 统计数量 --><ul class="goods-sales"><li><p>销量人气</p><p> 100+ </p><p><i class="iconfont icon-task-filling"></i>销量人气</p></li><li><p>商品评价</p><p>200+</p><p><i class="iconfont icon-comment-filling"></i>查看评价</p></li><li><p>收藏人气</p><p>300+</p><p><i class="iconfont icon-favorite-filling"></i>收藏商品</p></li><li><p>品牌信息</p><p>400+</p><p><i class="iconfont icon-dynamic-filling"></i>品牌主页</p></li></ul></div><div class="spec"><!-- 商品信息区 --><p class="g-name"> 抓绒保暖，毛毛虫儿童鞋 </p><p class="g-desc">好穿 </p><p class="g-price"><span>200</span><span> 100</span></p><div class="g-service"><dl><dt>促销</dt><dd>12月好物放送，App领券购买直降120元</dd></dl><dl><dt>服务</dt><dd><span>无忧退货</span><span>快速退款</span><span>免费包邮</span><a href="javascript:;">了解详情</a></dd></dl></div><!-- sku组件 --><!-- 数据组件 --><!-- 按钮组件 --><div><el-button size="large" class="btn">加入购物车</el-button></div></div></div><div class="goods-footer"><div class="goods-article"><!-- 商品详情 --><div class="goods-tabs"><nav><a>商品详情</a></nav><div class="goods-detail"><!-- 属性 --><ul class="attrs"><li v-for="item in 3" :key="item.value"><span class="dt">白色</span><span class="dd">纯棉</span></li></ul><!-- 图片 --></div></div></div><!-- 24热榜+专题推荐 --><div class="goods-aside"></div></div></div></div></div></div>
</template><style scoped lang='scss'>
.xtx-goods-page {.goods-info {min-height: 600px;background: #fff;display: flex;.media {width: 580px;height: 600px;padding: 30px 50px;}.spec {flex: 1;padding: 30px 30px 30px 0;}}.goods-footer {display: flex;margin-top: 20px;.goods-article {width: 940px;margin-right: 20px;}.goods-aside {width: 280px;min-height: 1000px;}}.goods-tabs {min-height: 600px;background: #fff;}.goods-warn {min-height: 600px;background: #fff;margin-top: 20px;}.number-box {display: flex;align-items: center;.label {width: 60px;color: #999;padding-left: 10px;}}.g-name {font-size: 22px;}.g-desc {color: #999;margin-top: 10px;}.g-price {margin-top: 10px;span {&::before {content: "¥";font-size: 14px;}&:first-child {color: $priceColor;margin-right: 10px;font-size: 22px;}&:last-child {color: #999;text-decoration: line-through;font-size: 16px;}}}.g-service {background: #f5f5f5;width: 500px;padding: 20px 10px 0 10px;margin-top: 10px;dl {padding-bottom: 20px;display: flex;align-items: center;dt {width: 50px;color: #999;}dd {color: #666;&:last-child {span {margin-right: 10px;&::before {content: "•";color: $xtxColor;margin-right: 2px;}}a {color: $xtxColor;}}}}}.goods-sales {display: flex;width: 400px;align-items: center;text-align: center;height: 140px;li {flex: 1;position: relative;~li::after {position: absolute;top: 10px;left: 0;height: 60px;border-left: 1px solid #e4e4e4;content: "";}p {&:first-child {color: #999;}&:nth-child(2) {color: $priceColor;margin-top: 10px;}&:last-child {color: #666;margin-top: 10px;i {color: $xtxColor;font-size: 14px;margin-right: 2px;}&:hover {color: $xtxColor;cursor: pointer;}}}}}
}.goods-tabs {min-height: 600px;background: #fff;nav {height: 70px;line-height: 70px;display: flex;border-bottom: 1px solid #f5f5f5;a {padding: 0 40px;font-size: 18px;position: relative;>span {color: $priceColor;font-size: 16px;margin-left: 10px;}}}
}.goods-detail {padding: 40px;.attrs {display: flex;flex-wrap: wrap;margin-bottom: 30px;li {display: flex;margin-bottom: 10px;width: 50%;.dt {width: 100px;color: #999;}.dd {flex: 1;color: #666;}}}>img {width: 100%;}
}.btn {margin-top: 20px;}.bread-container {padding: 25px 0;
}
</style>

配置路由

const router = createRouter({history: createWebHistory(import.meta.env.BASE_URL),// path和component对应关系的位置routes: [{path: '/',component: Layout,children: [{path: '',component: Home},{path: 'category/:id',component: Category},{path: 'category/sub/:id',component: SubCategory},{path: 'detail/:id',component: Detail}]},{path: '/login',component: Login}],// 路由滚动行为定制scrollBehavior () {return {top: 0}}
})

绑定模版测试跳转

<RouterLink :to="`/detail/${item.id}`"><img :src="item.picture" alt="" /><p class="name">{{ item.name }}</p><p class="price">&yen;{{ item.price }}</p>
</RouterLink>

基础数据渲染

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封装接口

import request from '@/utils/http'
export const getDetail = (id) => {return request({url: '/goods',params: {id}})
}

获取数据渲染模版

<script setup>
import { getDetail } from '@/apis/detail'
import { onMounted, ref } from 'vue'
import { useRoute } from 'vue-router'
const goods = ref({})
const route = useRoute()
const getGoods = async () => {const res = await getDetail(route.params.id)goods.value = res.result
}
onMounted(() => getGoods())
</script><template><div class="xtx-goods-page"><div class="container" v-if="goods.details"><div class="bread-container"><el-breadcrumb separator=">"><el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item><!-- 错误原因：goods一开始{}  {}.categories -> undefined  -> undefined[1]1. 可选链的语法?. 2. v-if手动控制渲染时机 保证只有数据存在才渲染--><el-breadcrumb-item :to="{ path: `/category/${goods.categories[1].id}` }">{{ goods.categories[1].name }}</el-breadcrumb-item><el-breadcrumb-item :to="{ path: `/category/sub/${goods.categories[0].id}` }">{{goods.categories[0].name}}</el-breadcrumb-item><el-breadcrumb-item>抓绒保暖，毛毛虫子儿童运动鞋</el-breadcrumb-item></el-breadcrumb></div><!-- 商品信息 --><div class="info-container"><div><div class="goods-info"><div class="media"><!-- 图片预览区 --><!-- 统计数量 --><ul class="goods-sales"><li><p>销量人气</p><p> {{ goods.salesCount }}+ </p><p><i class="iconfont icon-task-filling"></i>销量人气</p></li><li><p>商品评价</p><p>{{ goods.commentCount }}+</p><p><i class="iconfont icon-comment-filling"></i>查看评价</p></li><li><p>收藏人气</p><p>{{ goods.collectCount }}+</p><p><i class="iconfont icon-favorite-filling"></i>收藏商品</p></li><li><p>品牌信息</p><p>{{ goods.brand.name }}</p><p><i class="iconfont icon-dynamic-filling"></i>品牌主页</p></li></ul></div><div class="spec"><!-- 商品信息区 --><p class="g-name"> {{ goods.name }} </p><p class="g-desc">{{ goods.desc }} </p><p class="g-price"><span>{{ goods.oldPrice }}</span><span> {{ goods.price }}</span></p><div class="g-service"><dl><dt>促销</dt><dd>12月好物放送，App领券购买直降120元</dd></dl><dl><dt>服务</dt><dd><span>无忧退货</span><span>快速退款</span><span>免费包邮</span><a href="javascript:;">了解详情</a></dd></dl></div><!-- sku组件 --><!-- 数据组件 --><!-- 按钮组件 --><div><el-button size="large" class="btn">加入购物车</el-button></div></div></div><div class="goods-footer"><div class="goods-article"><!-- 商品详情 --><div class="goods-tabs"><nav><a>商品详情</a></nav><div class="goods-detail"><!-- 属性 --><ul class="attrs"><li v-for="item in goods.details.properties" :key="item.value"><span class="dt">{{ item.name }}</span><span class="dd">{{ item.value }}</span></li></ul><!-- 图片 --><img v-for="img in goods.details.pictures" :src="img" :key="img" alt=""></div></div></div><!-- 24热榜+专题推荐 --><div class="goods-aside"></div></div></div></div></div></div>
</template>

热榜区域实现

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两块热榜相比，结构一致，标题title和列表内容不同

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封装hot组件

<script setup>
import { ref } from 'vue'
import { getHotGoodsAPI } from '@/apis/detail'
import { useRoute } from 'vue-router'
const goodList = ref([])
const route = useRoute()
//**适配热榜类型type去适配title和数据列表**
const props = defineProps({type: {type: Number, // 1代表24小时热销榜 2代表周热销榜 3代表总热销榜 可以使用type去适配title和数据列表default: 1}
})
//适配热榜title
const TITLEMAP = {1: '24小时热榜',2: '周热榜', 
}
const title = computed(() => TITLEMAP[props.type])const getHotList = async () => {const res = await getHotGoodsAPI({id: route.params.id,type: props.type})goodList.value = res.result
}
onMounted(() => getHotList())
</script><template><div class="goods-hot"><h3>{{title}}</h3><!-- 商品区块 --><RouterLink to="/" class="goods-item" v-for="item in goodList" :key="item.id"><img :src="item.picture" alt="" /><p class="name ellipsis">{{item.name}}</p><p class="desc ellipsis">{{item.desc}}</p><p class="price">&yen;{{item.price}}</p></RouterLink></div>
</template><style scoped lang="scss">
.goods-hot {h3 {height: 70px;background: $helpColor;color: #fff;font-size: 18px;line-height: 70px;padding-left: 25px;margin-bottom: 10px;font-weight: normal;}.goods-item {display: block;padding: 20px 30px;text-align: center;background: #fff;img {width: 160px;height: 160px;}p {padding-top: 10px;}.name {font-size: 16px;}.desc {color: #999;height: 29px;}.price {color: $priceColor;font-size: 20px;}}
}
</style>

封装接口

/*** 获取热榜商品* @param {Number} id - 商品id* @param {Number} type - 1代表24小时热销榜 2代表周热销榜* @param {Number} limit - 获取个数*/
export const fetchHotGoodsAPI = ({ id, type, limit = 3 }) => {return request({url:'/goods/hot',params:{id, type, limit}})
}

使用组件传入不同的type

<!-- 24小时热榜 -->
<GoodHot :type="1" />
<!-- 周热榜 -->
<GoodHot :type="2" />

图片预览组件封装

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小图切换大图实现

思路：维护一个数组图片列表，鼠标划入小图记录当前小图下标值，通过下标值在数组中取对应图片，显示到大图位置
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<script setup>
import { ref } from 'vue'
// 实现鼠标移入交互小图切换大图显示
const activeIndex = ref(0)
const enterhandler = (i) => {activeIndex.value = i
}
// 图片列表
const imageList = ["https://yanxuan-item.nosdn.127.net/d917c92e663c5ed0bb577c7ded73e4ec.png","https://yanxuan-item.nosdn.127.net/e801b9572f0b0c02a52952b01adab967.jpg","https://yanxuan-item.nosdn.127.net/b52c447ad472d51adbdde1a83f550ac2.jpg","https://yanxuan-item.nosdn.127.net/f93243224dc37674dfca5874fe089c60.jpg","https://yanxuan-item.nosdn.127.net/f881cfe7de9a576aaeea6ee0d1d24823.jpg"
]
</script>
<template><div class="goods-image"><!-- 左侧大图--><div class="middle" ref="target"><img :src="imageList[curIndex]" alt="" /><!-- 蒙层小滑块 --><div class="layer" :style="{ left: `0px`, top: `0px` }"></div></div><!-- 小图列表 --><ul class="small"><li v-for="(img, i) in imageList" :key="i" @mouseenter="enterhandler(i)" :class="{active:i===activeIndex}"><img :src="img" alt="" /></li></ul><!-- 放大镜大图 --><div class="large" :style="[{backgroundImage: `url(${imageList[0]})`,backgroundPositionX: `0px`,backgroundPositionY: `0px`,},]" v-show="false"></div></div>
</template><style scoped lang="scss">
.goods-image {width: 480px;height: 400px;position: relative;display: flex;.middle {width: 400px;height: 400px;background: #f5f5f5;}.large {position: absolute;top: 0;left: 412px;width: 400px;height: 400px;z-index: 500;box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);background-repeat: no-repeat;// 背景图:盒子的大小 = 2:1  将来控制背景图的移动来实现放大的效果查看 background-positionbackground-size: 800px 800px;background-color: #f8f8f8;}.layer {width: 200px;height: 200px;background: rgba(0, 0, 0, 0.2);// 绝对定位 然后跟随咱们鼠标控制left和top属性就可以让滑块移动起来left: 0;top: 0;position: absolute;}.small {width: 80px;li {width: 68px;height: 68px;margin-left: 12px;margin-bottom: 15px;cursor: pointer;&:hover,&.active {border: 2px solid $xtxColor;}}}
}
</style>

放大镜效果实现

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功能拆解
1️⃣左侧滑块跟随鼠标移动
2️⃣右侧大图放大效果实现
3️⃣鼠标移入控制滑块和大图显示隐藏
思路
1️⃣获取到当前的鼠标在盒子内的相对位置（useMouseInElement）,控制滑块跟随鼠标移动（left/top）
2️⃣实现放大效果，大图的宽高是小图的两倍，大图的移动方向和滑块移动方向相反，且数值为2倍
3️⃣鼠标移入盒子（isOutside），滑块和大图才显示（v-show）

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<script setup>
import { ref, watch } from 'vue'
import { useMouseInElement } from '@vueuse/core'// 图片列表
const imageList = ["https://yanxuan-item.nosdn.127.net/d917c92e663c5ed0bb577c7ded73e4ec.png","https://yanxuan-item.nosdn.127.net/e801b9572f0b0c02a52952b01adab967.jpg","https://yanxuan-item.nosdn.127.net/b52c447ad472d51adbdde1a83f550ac2.jpg","https://yanxuan-item.nosdn.127.net/f93243224dc37674dfca5874fe089c60.jpg","https://yanxuan-item.nosdn.127.net/f881cfe7de9a576aaeea6ee0d1d24823.jpg"
]// 1.小图切换大图显示
const activeIndex = ref(0)
const enterhandler = (i) => {activeIndex.value = i
}// 2. 获取鼠标相对位置
const target = ref(null)
const { elementX, elementY, isOutside } = useMouseInElement(target)// 3. 控制滑块跟随鼠标移动（监听elementX/Y变化，一旦变化 重新设置left/top）
const left = ref(0)
const top = ref(0)const positionX = ref(0)
const positionY = ref(0)
watch([elementX, elementY, isOutside], () => {console.log('xy变化了')// 如果鼠标没有移入到盒子里面 直接不执行后面的逻辑if (isOutside.value) returnconsole.log('后续逻辑执行了')// 有效范围内控制滑块距离// 横向if (elementX.value > 100 && elementX.value < 300) {left.value = elementX.value - 100}// 纵向if (elementY.value > 100 && elementY.value < 300) {top.value = elementY.value - 100}// 处理边界if (elementX.value > 300) { left.value = 200 }if (elementX.value < 100) { left.value = 0 }if (elementY.value > 300) { top.value = 200 }if (elementY.value < 100) { top.value = 0 }// 控制大图的显示positionX.value = -left.value * 2positionY.value = -top.value * 2})</script><template><div class="goods-image"><!-- 左侧大图--><div class="middle" ref="target"><img :src="imageList[activeIndex]" alt="" /><!-- 蒙层小滑块 --><div class="layer" v-show="!isOutside" :style="{ left: `${left}px`, top: `${top}px` }"></div></div><!-- 小图列表 --><ul class="small"><li v-for="(img, i) in imageList" :key="i" @mouseenter="enterhandler(i)" :class="{ active: i === activeIndex }"><img :src="img" alt="" /></li></ul><!-- 放大镜大图 --><div class="large" :style="[{backgroundImage: `url(${imageList[activeIndex]})`,backgroundPositionX: `${positionX}px`,backgroundPositionY: `${positionY}px`,},]" v-show="!isOutside"></div></div>
</template><style scoped lang="scss">
.goods-image {width: 480px;height: 400px;position: relative;display: flex;.middle {width: 400px;height: 400px;background: #f5f5f5;}.large {position: absolute;top: 0;left: 412px;width: 400px;height: 400px;z-index: 500;box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);background-repeat: no-repeat;// 背景图:盒子的大小 = 2:1  将来控制背景图的移动来实现放大的效果查看 background-positionbackground-size: 800px 800px;background-color: #f8f8f8;}.layer {width: 200px;height: 200px;background: rgba(0, 0, 0, 0.2);// 绝对定位 然后跟随咱们鼠标控制left和top属性就可以让滑块移动起来left: 0;top: 0;position: absolute;}.small {width: 80px;li {width: 68px;height: 68px;margin-left: 12px;margin-bottom: 15px;cursor: pointer;&:hover,&.active {border: 2px solid $xtxColor;}}}
}
</style>