在没有JQuery的特定容器上创建“手电筒”效果

<div class="flashlight-container">
  <div class="flashlight"></div>
  <img src="image.jpg" alt="Image">
</div>

.flashlight-container {
  position: relative;
  width: 400px;
  height: 300px;
}

.flashlight {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  pointer-events: none;
  transition: opacity 0.3s;
}

.flashlight::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.8);
  opacity: 0;
  transition: opacity 0.3s;
}

.flashlight-container:hover .flashlight {
  opacity: 0.5;
}

.flashlight-container:hover .flashlight::before {
  opacity: 1;
}

// 无需使用特定容器创建手电筒效果的JavaScript代码