纯CSS显示评分星星（包括半星）

已经有好多插件可以实现星星打分和显示，但只是根据分数来显示星星或半星时，只需用CSS实现会比较简洁不需要引用多于的JS。

HTML

<div>
  <table>
    <tr>
      <td>评分:1.5</td>
      <td>
        <div class="rating-content" data-rating="1.5">
          <span>★</span>
          <span>★</span>
          <span>★</span>
          <span>★</span>
          <span>★</span>
        </div>   
      </td>
    </tr>
  </table>
</div>

CSS

.rating-content {
  color: #ffa100;
}

.rating-content span {
  display: inline-block;
  position: relative;
}

.rating-content[data-rating="0.5"] span:nth-child(n+1),
.rating-content[data-rating="1.5"] span:nth-child(n+2),
.rating-content[data-rating="2.5"] span:nth-child(n+3),
.rating-content[data-rating="3.5"] span:nth-child(n+4),
.rating-content[data-rating="4.5"] span:last-child{
  color: #FFF;
}

.rating-content[data-rating="0.5"] span:nth-child(n+1):before,
.rating-content[data-rating="1.5"] span:nth-child(n+2):before,
.rating-content[data-rating="2.5"] span:nth-child(n+3):before,
.rating-content[data-rating="3.5"] span:nth-child(n+4):before,
.rating-content[data-rating="4.5"] span:last-child:before{
  content: "\2605";
  display: block;
  position: absolute;
  width: 50%;
  pointer-events: none;
  overflow: hidden;
  color: #ffa100;
}

.rating-content[data-rating="0.5"] span:nth-child(n+2),
.rating-content[data-rating="1.0"] span:nth-child(n+2),
.rating-content[data-rating="1.5"] span:nth-child(n+3),
.rating-content[data-rating="2.0"] span:nth-child(n+3),
.rating-content[data-rating="2.5"] span:nth-child(n+4),
.rating-content[data-rating="3.0"] span:nth-child(n+4),
.rating-content[data-rating="3.5"] span:nth-child(n+5),
.rating-content[data-rating="4.0"] span:nth-child(n+5){
  display: none;
}

显示结果

image.png

想要显示不数量的星星时，只要修改data-rating的设置值即可。
下方的链接可以直接动手调试
https://codepen.io/kou-kaisei/pen/OJOgwJE