您发布的代码实际上并未删除<br>标记，只是在结果中看不到它们.我会用换行符替换那些以及换行符之后或文本开头的任何-"，然后如上所述替换.

Your posted code doesn't actually remove the <br> tags, you just don't see them in the results. I'd replace those, and any "-" after a newline or at the beginning of the text, with newlines, then replace as above.

$('.entry-content ul').each(function() {
  var $this = $(this);

  $this.html(
    $this
      .html()
      .trim()
      .replace(/^-|[\r\n]+-|<br>/g, "\n")
      .replace(/[^\r\n]+/g, '<li>$&</li>')
  );
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class=entry-content>
<ul>
-1+ years of experience in End User Support<br>
-Experience re-imaging laptops<br>
-Great customer service experience
  </ul>
</div>