Vue实现点击图片放大显示功能

  <el-table-column
    prop="identifImg"
    header-align="center"
    align="center"
    label="证件照"
    width="100">
    <template slot-scope="scope">
      <el-popover
        placement="top-start"
        trigger="hover">
        <div class="row_reserve"><img class="big-img" :src="scope.row.identifImg"/></div>
        <div slot="reference"><img class="td-img" :src="scope.row.identifImg"/></div>
      </el-popover>
    </template>
  </el-table-column>

<template>
  <div v-show="visible" @click="closeClick" class="showPhoto">
    <img class="img" :src="url" alt="图片加载失败" />
  </div>
</template>

<script>
  export default {
    props: {
      url: {
        type: String,
        default: "",
      },
      visible: {
        type: Boolean,
        default: false,
      },
    },
    methods: {
      closeClick() {
        //子组件可以使用 $emit 触发父组件的自定义事件
        this.$emit("closeClick");
      },
    },
  };
</script>
<style lang="css" scoped>
  .showPhoto {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .showPhoto .img {
    display: block;
    margin: auto 0;
    max-width: 20%;
    text-align: center;
  }
</style>

  import BigImg from "../components/big-img"

  export default {
    data() {
     
      return {
        photoVisible: false,
        bigImgUrl: ""
      };
    },
    components:{
      BigImg
    },
    methods: {
      
      showBigImage(e) {//点击图片函数，点击后，把photoVisible设置成true
        if (e != "") {
          this.photoVisible = true;
          this.bigImgUrl = e;
        }
      },
  };

<template>
  <div>
	<!-- imgBaseUrl为图片URL-->
	<img v-if="imgBaseUrl" 
	     style="width:100%" 
	     :src="imgBaseUrl"   
	     @click.self="showBigImage(imgBaseUrl)">

	<img
	    @click.self="showBigImage($event)"
	    src="~@/assets/img/liaojiewt/202141.png"
	    alt=""
	/>
	<!--显示放大图片的组件-->
	<BigImg :visible="photoVisible" :url="bigImgUrl" @closeClick="()=>{photoVisible=false}"></BigImg>
  </div>
</template>