vue：图片里面覆盖了3个局部遮罩层，点击遮罩层可显示对应的文字。（附上实例）

以下是一个示例代码，其中使用了vue的v-for指令和@click事件监听器来实现图片覆盖了3个局部遮罩层，点击遮罩层可显示对应的文字的效果：

<template>
  <div class="image-container">
    <div v-for="(item, index) in items" :key="index" class="image-item">
      <img :src="item.image" alt="">
      <div class="mask" :class="'mask-' + index" @click="showText(index)">
        <div v-if="show[index]" class="text">{{ item.text }}</div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [
        { image: 'https://picsum.photos/id/1/400/300', text: '这是第一张图片' },
        { image: 'https://picsum.photos/id/2/400/300', text: '这是第二张图片' },
        { image: 'https://picsum.photos/id/3/400/300', text: '这是第三张图片' }
      ],
      show: [false, false, false]
    }
  },
  methods: {
    showText(index) {
      this.show[index] = !this.show[index]
    }
  }
}
</script>

<style>
.image-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  max-width: 800px;
  margin: 0 auto;
}

.image-item {
  position: relative;
  width: 30%;
  margin-bottom: 20px;
}

.image-item img {
  max-width: 100%;
  height: auto;
}

.mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.mask:hover {
  opacity: 1;
}

.text {
  color: #fff;
  font-size: 18px;
  text-align: center;
  max-width: 80%;
  margin: 0 auto;
}
</style>