做五个星星鼠标移动星星变亮

以下是一个简单的 HTML、CSS 和 JavaScript 代码示例，可以实现五个星星，当鼠标移动到星星上时，星星变亮。

HTML 代码：

<div class="rating">
  <span class="star" data-rating="1"></span>
  <span class="star" data-rating="2"></span>
  <span class="star" data-rating="3"></span>
  <span class="star" data-rating="4"></span>
  <span class="star" data-rating="5"></span>
</div>

CSS 代码：

.rating {
  display: inline-block;
  font-size: 0;
  height: 20px;
  position: relative;
  width: 100px;
}

.star {
  cursor: pointer;
  display: inline-block;
  font-size: 20px;
  height: 20px;
  margin-right: 4px;
  position: relative;
  width: 20px;
}

.star:before {
  content: "\2605";
  position: absolute;
  left: 0;
  top: 0;
}

.star:hover:before,
.star:hover ~ .star:before {
  content: "\2605";
  color: gold;
}

.star:hover:before {
  z-index: 1;
}

JavaScript 代码：

const stars = document.querySelectorAll('.star');
const rating = document.querySelector('.rating');

rating.addEventListener('click', function(e) {
  const starClicked = e.target.closest('.star');
  if (starClicked) {
    const ratingValue = starClicked.dataset.rating;
    alert(`You rated this ${ratingValue} stars.`);
  }
});

rating.addEventListener('mousemove', function(e) {
  const starUnderMouse = e.target.closest('.star');
  if (starUnderMouse) {
    const ratingValue = starUnderMouse.dataset.rating;
    stars.forEach(function(star) {
      if (star.dataset.rating <= ratingValue) {
        star.style.color = 'gold';
      } else {
        star.style.color = 'gray';
      }
    });
  } else {
    stars.forEach(function(star) {
      star.style.color = 'gray';
    });
  }
});

这个代码可以实现当鼠标移动到星星上时，星星变亮，当鼠标点击星星时，弹出一个提示框显示所选的星级评价。您可以根据自己的需求进行修改和定制。