实现效果

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实现代码

html

<template>
  <div class="course-container">
    <el-row :gutter="20">
      <el-col
        v-for="(item, index) in list"
        :key="index"
        :xs="24"
        :sm="8"
        :md="8"
        :lg="8"
        :xl="4"
      >
        <el-card shadow="hover">
          <div
            style="width: 100%; height: 240px"
            @mouseenter="enter(index)"
            @mouseleave="leave()"
          >
            <el-row>
              <el-col>
                <el-button
                  v-if="seen && index == current"
                  type="info"
                  icon="el-icon-goods"
                  @click="endCourse(item.id, index)"
                ></el-button>
                <el-button
                  v-if="seen && index == current"
                  type="info"
                  icon="el-icon-edit"
                  @click="editCourse(item, index)"
                ></el-button>
                <el