How does Vue reuse a piece of code in a single file?

For example, I have a code block a that I need to include in a node in some cases

For example, code block a contains dozens of lines

<div v-if="needScroll">
  <scroll-view>
    代码块A
  </scroll-view>
</div>

<div v-else>
  代码块A
</div>

Is there any easy way to write it? At present, one copy is directly copied up and down. It's a bit messy to change two places