正则表达式：从 html 标签中删除所有 html 标签，除了一些其他 html 标签

Question

我需要删除所有 html 标签，例如<p style="text-align: center;">，但html 标签中的 </em>和除外</em><p class="glovo"></p>

例子：

<p class="glovo">In these <p style="text-align: center;"> situations we may be forgetting to really <em>bend</em> at our practice and <em>sweat</em> at it.</p>

必须成为：

<p class="glovo">In these situations we may be forgetting to really <em>bend</em> at our practice and <em>sweat</em> at it.</p>

我使用这个通用公式：

REGION-START(?=(?:(?!REGION-FINAL).)*?FIND REGEX)(?=(?:(?!REGION-FINAL).)).+?REGION-FINAL\R?

REGION-START = <p class="glovo">
REGION-FINAL = </p>
FIND REGEX = <(?!/)[^>]*[^/]>(?!<em>|</em>)

因此，我的最终正则表达式变成：

FIND:

<p class="glovo">(?=(?:(?!</p>).)*?<(?!/)[^>]*[^/]>(?!<em>|</em>))(?=(?:(?!</p>).)).+?</p>\R?

REPLACE BY: (LEAVE EMPTY)

问题是我的正则表达式选择了整个 html 标记，而不仅仅是其中的标记。有人能帮助我吗？

Answer 1

• Ctrl+H
• 找什么：(?:<p class="glovo">|\G).*?\K<(?!/?em>).*?>(?=.*</p>)
• 用。。。来代替：LEAVE EMPTY
• 打钩 环绕
• 选择 正则表达式
• Replace all

解释：

(?:                     # non capture group
    <p class="glovo">       # literally
  |                       # OR
    \G                      # restart from last match position
)                       # end group
.*?                     # 0 or more any character, not greedy
\K                      # forget all we have seen until this position
<                       # literally <
    (?!/?em>)               # not followed by em or /em
    .*?                     # 0 or more any character, not greedy
    >
(?=.*</p>)              # positive lookahead, make sure we have </p> somewhere after

截图（之前）：

截图（之后）：