手记

【学习打卡】第11天 【2022版】Vue3 系统入门与项目实战第十一讲

ToRAmen
2022-08-16 23:21:05浏览 1069

课程名称： 2022持续升级 Vue3 从入门到实战 掌握完整知识体系

课程章节： 商家展示功能开发（下）

主讲老师： Dell

课程内容：

今天学习的内容包括：
继续开发展示功能

课程收获：

11.1 心得：

按键修饰符:enter,tab,delete,esc,up,down,left,right(只有你点击回车，tab，backspace键时才会执行事件函数)

鼠标修饰符:left,right,middle（当鼠标左键，右键，中键点击时才会执行事件函数）

精确修饰符:exact
@click.ctrl.exact表示的是必须是按住ctrl键再点击元素才可以触发事件，如果不加exact的话表示只要包含ctrl键都可以触发事件

11.2/11.3 心得：

源代码：

ShopInfo.vue：

<template>
  <div class="shop">
    <img :src="item.imgUrl" class="shop__img">
    <div
      :class="{'shop__content': true, 'shop__content--bordered': hideBorder ? false: true}"
    >
      <div class="shop__content__title">{{item.name}}</div>
      <div class="shop__content__tags">
        <span class="shop__content__tag">月售: {{item.sales}}</span>
        <span class="shop__content__tag">起送: {{item.expressLimit}}</span>
        <span class="shop__content__tag">基础运费: {{item.expressPrice}}</span>
      </div>
      <p class="shop__content__highlight">{{item.slogan}}</p>
    </div>
  </div>
</template>

<script>
export default {
  name: 'ShopInfo',
  props: ['item', 'hideBorder']
}
</script>

<style lang="scss" scoped>
@import '../style/viriables.scss';
.shop {
  display: flex;
  padding-top: .12rem;
  &__img {
    margin-right: .16rem;
    width: .56rem;
    height: .56rem;
  }
  &__content {
    flex: 1;
    padding-bottom: .12rem;
    &--bordered {
      border-bottom: 1px solid $content-bgColor;
    }
    &__title {
      line-height: .22rem;
      font-size: .16rem;
      color: $content-fontcolor;
    }
    &__tags {
      margin-top: .08rem;
      line-height: .18rem;
      font-size: .13rem;
      color: $content-fontcolor;
    }
    &__tag {
      margin-right: .16rem;
    }
    &__highlight {
      margin: .08rem 0 0 0;
      line-height: .18rem;
      font-size: .13rem;
      color: $hightlight-fontColor;
    }
  }
}
</style>

Toast.vue：

<template>
  <div class="toast">{{message}}</div>
</template>

<script>
import { reactive, toRefs } from 'vue'

export default {
  props: ['message']
}

export const useToastEffect = () => {
  
  const toastData = reactive({
    show: false,
    toastMessage: ''
  })

  const showToast = (message) => {
    toastData.show = true
    toastData.toastMessage = message
    setTimeout(() => {
      toastData.show = false
      toastData.toastMessage = ''
    }, 2000)
  }

  const { show, toastMessage } = toRefs(toastData)
  
  return { show, toastMessage, showToast }
}
</script>

<style lang="scss" scoped>
@import '../style/viriables.scss';
.toast {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: .1rem;
  background: rgba(0, 0, 0, .35);
  border-radius: .05rem;
  color: $bgColor;
}
</style>


import { createRouter, createWebHashHistory } from 'vue-router'

const routes = [{
    path: '/',
    name: 'Home',
    component: () => import(/* webpackChunkName: "home" */ '../views/home/Home')
  }, {
    path: '/shop/:id',
    name: 'Shop',
    component: () => import(/* webpackChunkName: "shop" */ '../views/shop/Shop')
  }, {
    path: '/register',
    name: 'Register',
    component: () => import(/* webpackChunkName: "register" */ '../views/register/Register'),
    beforeEnter(to, from, next) {
      const { isLogin } = localStorage;
      isLogin ? next({ name: 'Home'}):  next();
    }
  }, {
    path: '/login',
    name: 'Login',
    component: () => import(/* webpackChunkName: "login" */ '../views/login/Login'),
    beforeEnter(to, from, next) {
      const { isLogin } = localStorage;
      isLogin ? next({ name: 'Home'}):  next();
    }
  },
  // {
  //   path: '/about',
  //   name: 'About',
  //   // route level code-splitting
  //   // this generates a separate chunk (about.[hash].js) for this route
  //   // which is lazy-loaded when the route is visited.
  //   
  // }
]

const router = createRouter({
  history: createWebHashHistory(),
  routes
})

router.beforeEach((to, from ,next) => {
  const { isLogin } = localStorage;
  const { name } = to;
  const isLoginOrRegister = (name === "Login" || name === "Register");
  (isLogin || isLoginOrRegister) ? next() : next({ name: 'Login'});
})

export default router


import Vuex from 'vuex'

export default Vuex.createStore({
  state: {
    cartList: {
      // 第一层级是商铺的id
      // shopId: {
        // 第二层是商品id
        // 第二层内容是商品内容以及购物数量
      //   productId: {
      //     _id: '1',
      //     name: '番茄250g/份',
      //     imgUrl: 'http://www.dell-lee.com/imgs/vue3/tomato.png',
      //     sales: 10,
      //     price: 33.6,
      //     oldPrice: 39.6,
      //     count: 2
      //   },
      // },
    }
  },
  mutations: {
    addItemToCart(state, payload) {
      const { shopId, productId, productInfo } = payload;
      let shopInfo = state.cartList[shopId]
      if(!shopInfo) { shopInfo = {} }
      let product = shopInfo[productId]
      if(!product) {
        product = productInfo
        product.count = 0
      }
      product.count += 1
      shopInfo[productId] = product
      state.cartList[shopId] = shopInfo
    }
  },
  actions: {
  },
  modules: {
  }
})


import axios from 'axios'

const instance = axios.create({
  baseURL: 'https://www.fastmock.site/mock/ae8e9031947a302fed5f92425995aa19/jd',
  timeout: 10000
})

export const get = (url, params = {}) => {
  return new Promise((resolve, reject) => {
    instance.get(url, { params }).then((response) => {
      resolve(response.data)
    }, err => {
      reject(err)
    })
  })
}

export const post = (url, data = {}) => {
  return new Promise((resolve, reject) => {
    instance.post(url, data, {
      headers: {
        'Content-Type': 'application/json'
      }
    }).then((response) => {
      resolve(response.data)
    }, err => {
      reject(err)
    })
  })
}

11.4 心得：

<template>
  <div class="wrapper">
    <img class="wrapper__img" src="http://www.dell-lee.com/imgs/vue3/user.png"/>
    <div class="wrapper__input">
      <input
        class="wrapper__input__content"
        placeholder="请输入用户名"
        v-model="username"
      />
    </div>
    <div class="wrapper__input">
      <input
        type="password"
        class="wrapper__input__content"
        placeholder="请输入密码"
        autocomplete="new-password"
        v-model="password"
      />
    </div>
    <div class="wrapper__input">
      <input
        class="wrapper__input__content"
        placeholder="确认密码"
        type="password"
        v-model="ensurement"
      />
    </div>
    <div class="wrapper__register-button" @click="handleRegister">注册</div>
    <div class="wrapper__register-link" @click="handleLoginClick">已有账号去登陆</div>
    <Toast v-if="show" :message="toastMessage"/>
  </div>
</template>

<script>
import { useRouter } from 'vue-router';
import { reactive, toRefs } from 'vue'
import { post } from '../../utils/request'
import Toast, { useToastEffect } from '../../components/Toast'

// 处理注册相关逻辑
const useRegisterEffect = (showToast) => {
  const router = useRouter()
  const data = reactive({
    username: '',
    password: '',
    ensurement: ''
  })

  const handleRegister = async () => {
    try {
      const result = await post('/api/user/register', {
        username: data.username,
        password: data.password
      })
      if (result?.errno === 0) {
        router.push({ name: 'Login' })
      } else {
        showToast('注册失败')
      }
    } catch (e) {
      showToast('请求失败')
    }
  }

  const { username, password, ensurement } = toRefs(data)
  return { username, password, ensurement, handleRegister}
}

// 处理登陆跳转
const useLoginEffect = () => {
  const router = useRouter()
  const handleLoginClick = () => {
    router.push({ name: 'Login'});
  }
  return { handleLoginClick }
}

export default {
  name: 'Register',
  components: { Toast }, 
  setup() {
    const { show, toastMessage, showToast } = useToastEffect()
    const { username, password, ensurement, handleRegister } = useRegisterEffect(showToast)
    const { handleLoginClick } = useLoginEffect();
    return {
      username, password, ensurement, show, toastMessage,
      handleRegister,handleLoginClick
    }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
.wrapper {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  &__img {
    display: block;
    margin: 0 auto .4rem auto;
    width: .66rem;
    height: .66rem;
  }
  &__input {
    height: .48rem;
    margin: 0 .4rem .16rem .4rem;
    padding: 0 .16rem;
    background: #F9F9F9;
    border: 1px solid rgba(0,0,0,0.10);
    border-radius: 6px;
    border-radius: 6px;
    &__content {
      line-height: .48rem;
      border: none;
      outline: none;
      width: 100%;
      background: none;
      font-size: .16rem;
      color: $content-notice-fontcolor;
      &::placeholder {
        color: $content-notice-fontcolor;
      }
    }
  }
  &__register-button {
    margin: .32rem .4rem .16rem .4rem;
    line-height: .48rem;
    background: $btn-bgColor;
    box-shadow: 0 .04rem .08rem 0 rgba(0,145,255,0.32);
    border-radius: .04rem;
    border-radius: .04rem;
    color: $bgColor;
    font-size: .16rem;
    text-align: center;
  }
  &__register-link {
    text-align: center;
    font-size: .14rem;
    color: $content-notice-fontcolor;
  }
}
</style>

11.5/11.6 心得：

export default {

name: 'Cart', 

setup() {

const route = useRoute(); 

const shopId = route.params.id;

const { changeCartItemInfo } = useCommonCartEffect()

const { total, price, productList } = useCartEffect(shopId) 

return { total, price, shopId, productList,changeCartItemInfo}

}

Toast.vue：

<template>
  <div class="toast">{{message}}</div>
</template>

<script>
import { reactive, toRefs } from 'vue'

export default {
  props: ['message']
}

export const useToastEffect = () => {
  
  const toastData = reactive({
    show: false,
    toastMessage: ''
  })

  const showToast = (message) => {
    toastData.show = true
    toastData.toastMessage = message
    setTimeout(() => {
      toastData.show = false
      toastData.toastMessage = ''
    }, 2000)
  }

  const { show, toastMessage } = toRefs(toastData)
  
  return { show, toastMessage, showToast }
}
</script>

<style lang="scss" scoped>
@import '../style/viriables.scss';
.toast {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: .1rem;
  background: rgba(0, 0, 0, .35);
  border-radius: .05rem;
  color: $bgColor;
}
</style>

当html标签新增@事件（如@click=“changeCart(shopId, item.id, item, -1)”
）时，响应参数(shopId，cartList)要在setup里return出来

11.7/11.8 心得：

<template>
  <div class="cart">
    <div class="product">
      <div class="product__header">

      </div>
      <template
        v-for="item in productList"
        :key="item._id"
      >
        <div class="product__item" v-if="item.count > 0">
          <div
            class="product__item__checked iconfont"
            v-html="item.check ? '&#xe652;': '&#xe6f7;'"
            @click="() => changeCartItemChecked(shopId, item._id)"
          />
          <img class="product__item__img" :src="item.imgUrl" />
          <div class="product__item__detail">
            <h4 class="product__item__title">{{item.name}}</h4>
            <p class="product__item__price">
              <span class="product__item__yen">&yen;</span>{{item.price}}
              <span class="product__item__origin">&yen;{{item.oldPrice}}</span>
            </p>
          </div>
          <div class="product__number">
            <span
              class="product__number__minus"
              @click="() => { changeCartItemInfo(shopId, item._id, item, -1) }"
            >-</span>
              {{item.count || 0}}
            <span
              class="product__number__plus"
              @click="() => { changeCartItemInfo(shopId, item._id, item, 1) }"
            >+</span>
          </div>
        </div>
      </template>
    </div>
    <div class="check">
      <div class="check__icon">
        <img
          src="http://www.dell-lee.com/imgs/vue3/basket.png"
          class="check__icon__img"
        />
        <div class="check__icon__tag">{{total}}</div>
      </div>
      <div class="check__info">
        总计：<span class="check__info__price">&yen; {{price}}</span>
      </div>
      <div class="check__btn">去结算</div>
    </div>
  </div>
</template>

<script>
import { computed } from 'vue'
import { useStore } from 'vuex'
import { useRoute } from 'vue-router'
import { useCommonCartEffect } from './commonCartEffect'

// 获取购物车信息逻辑
const useCartEffect = (shopId) => {
    const { changeCartItemInfo } = useCommonCartEffect()
    const store = useStore()
    const cartList = store.state.cartList

    const total = computed(() => {
      const productList = cartList[shopId]
      let count = 0
      if(productList) {
         for(let i in productList) {
           const product = productList[i]
           count += product.count
        }
      }
      return count
    })

    const price = computed(() => {
      const productList = cartList[shopId]
      let count = 0
      if(productList) {
         for(let i in productList) {
           const product = productList[i]
           if(product.check) {
             count += (product.count * product.price)
           }
        }
      }
      return count.toFixed(2)
    })

    const productList = computed(() => {
      const productList = cartList[shopId] || []
      return productList
    })

    const changeCartItemChecked = (shopId, productId) => {
      store.commit('changeCartItemChecked', {shopId, productId})
    }

    return { total, price, productList, changeCartItemInfo, changeCartItemChecked}
}

export default {
  name: 'Cart',
  setup() {
    const route = useRoute();
    const shopId = route.params.id;
    const { total, price, productList, changeCartItemInfo, changeCartItemChecked } = useCartEffect(shopId)
    return { total, price, shopId, productList, changeCartItemInfo, changeCartItemChecked }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
@import '../../style/mixins.scss';
.cart {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
}
.product {
  overflow-y: scroll;
  flex: 1;
  background: #FFF;
  &__header {
    height: .52rem;
    border-bottom: 1px solid #F1F1F1;
  }
  &__item {
    position: relative;
    display: flex;
    padding: .12rem 0;
    margin: 0 .16rem;
    border-bottom: .01rem solid $content-bgColor;
    &__checked {
      line-height: .5rem;
      margin-right: .2rem;
      color: #0091FF;
      font-size: .2rem;
    }
    &__detail {
      overflow: hidden;
    }
    &__img {
      width: .46rem;
      height: .46rem;
      margin-right: .16rem;
    }
    &__title {
      margin: 0;
      line-height: .2rem;
      font-size: .14rem;
      color: $content-fontcolor;
      @include ellipsis;
    }
    &__price {
      margin: .06rem 0 0 0;
      line-height: .2rem;
      font-size: .14rem;
      color: $hightlight-fontColor;
    }
    &__yen {
      font-size: .12rem;
    }
    &__origin {
      margin-left: .06rem;
      line-height: .2rem;
      font-size: .12rem;
      color: $light-fontColor;
      text-decoration: line-through;
    }
    .product__number {
      position: absolute;
      right: 0;
      bottom: .12rem;
      &__minus, &__plus
       {
        display: inline-block;
        width: .2rem;
        height: .2rem;
        line-height: .16rem;;
        border-radius: 50%;
        font-size: .2rem;
        text-align: center;
      }
      &__minus {
        border: .01rem solid $medium-fontColor;
        color: $medium-fontColor;
        margin-right: .05rem;
      }
      &__plus {
        background: $btn-bgColor;
        color: $bgColor;
        margin-left: .05rem;
      }
    }
  }
}
.check {
  display: flex;
  height: .49rem;
  border-top: .01rem solid $content-bgColor;
  line-height: .49rem;
  &__icon {
    position: relative;
    width: .84rem;
    &__img {
      display: block;
      margin: .12rem auto;
      width: .28rem;
      height: .26rem;
    }
    &__tag {
      position: absolute;
      left: .46rem;
      top: .04rem;
      padding: 0 .04rem;
      min-width: .2rem;
      height: .2rem;
      line-height: .2rem;
      background-color: $hightlight-fontColor;
      border-radius: .1rem;
      font-size: .12rem;
      text-align: center;
      color: #fff;
      transform: scale(.5);
      transform-origin: left center;
    }
  }
  &__info {
    flex: 1;
    color: $content-fontcolor;
    font-size: .12rem;
    &__price {
      line-height: .49rem;
      color: $hightlight-fontColor;
      font-size: .18rem;
    }
  }
  &__btn {
    width: .98rem;
    background-color: #4FB0F9;
    text-align: center;
    color: #FFF;
    font-size: .14rem;
  }
}
</style>

相关标签
JavaScript
Vue.js
0人推荐
随时随地看视频
慕课网APP

相关阅读

【学习打卡】第5天 项目实战：Vue.js仿京东到家电商全栈项目前端开发
【学习打卡】第6天 【2022版】Vue3 系统入门与项目实战第六讲
【学习打卡】第13天 【2022版】Vue3 系统入门与项目实战第十四讲
【学习打卡】第14天 【2022版】Vue3 系统入门与项目实战第十五讲
【金秋打卡】第13天 全新升级，基于Vue3最新标准，打造后台综合解决方案之为用户分配角色