How to wrap content with jQuery?

Question

How can I use wrap around the content with the placeholder div using jQuery?

So I can turn this:

<div class="placeholder"></div>
<div class="content"></div>
<div class="content"></div>
<div class="content"></div>
<div class="content"></div>
<div class="placeholder"></div>
<div class="content"></div>
<div class="content"></div>
<div class="placeholder"></div>
<div class="content"></div>
<div class="content"></div>
<div class="content"></div>
<div class="placeholder"></div>

Into this:

<div class="wrap">
  <div class="placeholder"></div>
  <div class="content">Abcd</div>
  <div class="content">Abcd</div>
  <div class="content">Abcd</div>
  <div class="content">Abcd</div>
</div>
<div class="wrap">
  <div class="placeholder"></div>
  <div class="content">Abcd</div>
  <div class="content">Abcd</div>
</div>
<div class="wrap">
  <div class="placeholder"></div>
  <div class="content">Abcd</div>
  <div class="content">Abcd</div>
  <div class="content">Abcd</div>
</div>

Answer 1

Try this with jQuery 1.4:

$('.placeholder').each(function(){
     $(this).nextUntil('.placeholder').andSelf().wrapAll('<div class="wrap" />');
});

jQuery 1.4 added the nextUntill function