vue中做出购物车的功能

效果展示：

一：html结构

<div id="buyButton" class="btn-buy">
        <button onclick="cartAdd(this,'/',1,'/shopping.html');" class="buy">立即购买</button>
         <button onclick="cartAdd(this,'/',0,'/cart.html');" class="add" ref="addToShopCartRef" @click="addToShopCart">加入购物车</button>
</div>

<transition v-on:before-enter="beforeEnter" v-on:enter="enter" v-on:after-enter="afterEnter">
      <div class="animateImg" v-if="isShowImg" ref="animateImgRef">
            <img width="100%" height="100%" :src="goods.imglist[0].thumb_path" alt="">
       </div>
</transition>

二：css样式

<style scoped>
.animateImg {
  height: 40px;
  width: 40px;
  position: absolute;
  top: 20px;
  left: 20px;
  transition: all 1s;
}
</style>

三：js部分

<script>
export default {
  data() {
    return {
      addToShopCartRefOffset: null, //获取加入购物车的偏移量
      shopCartOffset: null,
      isShowImg: false
    };
  },

  mounted() {
    setTimeout(() => {
      this.addToShopCartRefOffset = $(this.$refs.addToShopCartRef).offset();
      this.shopCartOffset = $("#shopCartId").offset();
    }, 200);
  },

  methods: {
    // 加入购物车
    addToShopCart() {
      this.isShowImg = true;
      //   准备好载荷
      const goods = {
        goodsId: this.$route.params.goodsId,
        count: this.goodsCount
      };
      //   调用Vuex的mutations方法
      this.store.commit("addGoods", goods);
    },
    // 动画相关,进入前的动画
    beforeEnter(el) {
      // 设置动画的起始位置
      el.style.left = `${this.addToShopCartRefOffset.left}px`;
      el.style.top = `${this.addToShopCartRefOffset.top}px`;
      el.style.transform = "scale(2)"
    },
    enter(el, done) {
      //刷新动画帧
      el.offsetWidth;
      el.style.transform = "scale(0.5)";

      //设置进入阶段结束的位置
      el.style.left = `${this.shopCartOffset.left}px`;
      el.style.top = `${this.shopCartOffset.top}px`;
      // ...
      done();
    },
    afterEnter(el) {
      this.isShowImg = false;
    }
  }
};
</script>

过渡&动画的官方文档：

https://vuejs.bootcss.com/v2/guide/transitions.html

写得不好，但是还是要去吃饭的