正则表达式 - ruby 怎么进行对称匹配？

Question

比如html代码中有嵌套的table元素，要去到外层和内层的table的outerHtml。这需要进行正则的嵌套匹配。html代码如下：

</table>
这是两个嵌套的table，使用正则式：

</td>

Answer 1

I don’t understand what you are talking about. xpath maybe you can use.

Answer 2

If you want to parse xml or html, consider using nokogiri. However, I really don't understand your question very clearly.