vue实战-产品详情页（轮播图、放大镜）

1.添加产品详情页的静态组件

因为它是路由组件，将其放入pages文件夹下。
注册路由组件
1）router中添加Detail的路由。

 {
        path:'/detail/:skuid',
        component:Detail,
        meta:{show:true}
    },

2）在Search页面处的产品点击跳转处，设置声明式导航跳转

 <router-link :to="`/detail/${good.id}`">
  <img :src="good.defaultImg" />
 </router-link>

2.设置详情页的api接口

在文件夹api下的接口统一管理中添加获得接口数据的函数reqDetailInfo，
需要传入产品的ID

// /api/item/{ skuId }
export const reqDetailInfo = (skuId) =>{
    return requests({url:`/item/${skuId}`,method:'get'})
}

3.创建关于产品详情的仓库（vuex)

在文件夹store下

import { reqDetailInfo } from "@/api"

const state = {
    detailList:{}
}
const mutations = {
    GETDETAILLIST(state,detailList){
        state.detailList = detailList
    }
}
const actions = {
    async getDetailList({commit},skuid){
        let result = await reqDetailInfo(skuid)
        if(result.code==200){
            commit('GETDETAILLIST',result.data)
        }
    }
}
const getters = {
    categoryView(state){
        return state.detailList.categoryView
    },
    skuInfo(state){
        return state.detailList.skuInfo
    },
    spuSaleAttrList(state){
        return state.detailList.spuSaleAttrList
    }
}

export default {
    state,
    mutations,
    actions,
    getters
}

在Detail组件下派发actions，触发数据进库。

mounted() {
    this.$store.dispatch("getDetailList", this.$route.params.skuid);
  },

通过getters处理，组件获得仓库中的数据

import { mapGetters } from "vuex";

 computed: {
    ...mapGetters([ "categoryView", "skuInfo", "spuSaleAttrList" ]),
    }

4.动态数据展示

左侧导航处

<!-- 导航路径区域 -->
      <div class="conPoin">
        <span v-show="categoryName.category1Name">{{
          categoryName.category1Name
        }}</span>
        <span v-show="categoryName.category2Name">{{
          categoryName.category2Name
        }}</span>
        <span v-show="categoryName.category3Name">{{
          categoryName.category3Name
        }}</span>
      </div>

放大镜与轮播图

父组件

<!--放大镜效果-->
 <Zoom :skuImageList="skuInfos" />
 <!-- 小图列表 -->
<ImageList :skuImageList="skuInfos" />

轮播图
轮播图子组件

<div class="swiper-container" ref="cur">
    <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="(skuImage,index) in skuImageList.skuImageList" :key="skuImage.id">
        <img :src="skuImage.imgUrl" :class="{active:currentIndex==index}" @click="changeCurrentIndex(index)">
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>

传值以及逻辑控制、动态轮播图

import Swiper from 'swiper'
  export default {
    name: "ImageList",
    data() {
      return {
        currentIndex:0
      }
    },
    props:[ 'skuImageList' ],
    //轮播图监听
    watch:{
      skuImageList:{
        immediate:true,
        handler(){
          this.$nextTick(()=>{
            new Swiper (this.$refs.cur, {
                  // 如果需要前进后退按钮
                  navigation: {
                    nextEl: '.swiper-button-next',
                    prevEl: '.swiper-button-prev',
                  },
                  slidesPerView:3,
                  slidesPerGroup:1
                  
                })        
        })
        }
      }
    },
    methods: {
      changeCurrentIndex(index){
        this.currentIndex = index
        //全局事件总线传值给兄弟组件zoom组件，判断此时点击的是哪张图片
        this.$bus.$emit('getIndex',this.currentIndex)
      }
    },
  }

放大镜
子组件

<template>
  <div class="spec-preview">
    <img :src="imgObj.imgUrl" />
    <div class="event" @mousemove="handler"></div>
    <div class="big" >
      <img :src="imgObj.imgUrl" ref="big" />
    </div>
    <div class="mask" ref="ms"></div>
  </div>
</template>

放大镜逻辑设置、参数动态传递逻辑

export default {
    name: "Zoom",
    data() {
      return {
        currentIndex:0
      }
    },
    props:[ 'skuImageList' ],
    computed:{
    //防止传来的值还没有值，用一个空数组来代替
      imgObj(){
        return this.skuImageList.skuImageList[this.currentIndex] || []
      }
    },
    //全局事件总线的绑定
    mounted(){
      this.$bus.$on('getIndex',(index)=>{
        this.currentIndex = index
      })
    },
    methods: {
    //放大镜核心函数
      handler(event){
        let mask = this.$refs.ms
        let big = this.$refs.big
        let left = event.offsetX - mask.offsetWidth/2
        let top = event.offsetY - mask.offsetHeight/2
        if(left < 0) left = 0
        if(left >= mask.offsetWidth) left = mask.offsetWidth
        if(top < 0) top = 0
        if(top >= mask.offsetHeight) top = mask.offsetHeight

        //修改mask的属性值
        mask.style.left = left+'px'
        mask.style.top = top+'px'
        big.style.left = -2*left +'px'
        big.style.top = -2*top + 'px'
      }
    },
  }

结果展示