I'm using nextUntil method to get all stuff between two elements. But this method does not include text nodes to output. It gives an array like [<br>, <br>, <br>]. How can I get all stuff including text nodes?
This is the HTML code:
$('.content a:contains("spoiler").b:even').each(function() {
  $(this).nextUntil('.content a:contains("spoiler").b')
    .wrapAll('<div style="border:solid 1px black;"></div>');
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="content">
  --- <a class="b" href="/?q=spoiler">spoiler</a> ---
  <br>
  <br> dangerous text here
  <br> --- <a class="b" href="/?q=spoiler">spoiler</a> ---
  <br> safe text here
  <br> --- <a class="b" href="/?q=spoiler">spoiler</a> ---
  <br>
  <br> dangerous text here
  <br> --- <a class="b" href="/?q=spoiler">spoiler</a> ---
</div>
JSFiddle: http://jsfiddle.net/Lwk97rvq/1/