split-view.js图片分割拖拽对比插件

<split-view 
  mode="normal" 
  start=25 
  split-view-label="Comparing day and night images" 
  slider-label="Slide me left and right to compare images">
  <picture slot="top">
    <img src="1.jpg" />
  </picture>
  <picture slot="bottom">
    <img src="2.jpg" />
  </picture>
</split-view>