Get elements that do not have a certain sibling?

Question

I am trying to use jQuery to find text areas that do not have a sibling of a certain class. Currently I am using the following:

$("textarea").not($("textarea").siblings(".siblingClass").siblings("textarea"))

Is there an alternative?

Sorry for the lack of context. The problem I am having is that I have a jquery plugin (maxlength) that runs multiple times (due to dynamic changes) and adds a div after textareas. The plugin does not check if it has already been run, so it will add the div multiple times.

Answer 1

If I understand the question correctly, .filter() can be useful.

$('textarea').filter(function(){
  return $(this).siblings('.that-class').length == 0;
});

$('textarea').filter(function(){
  return $(this).siblings('.a').length == 0;
}).css( "color", "red" );

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
  <div>
    <div class="a"></div>
    <textarea>one</textarea>
    <div class="b"></div>
  </div>
  <div>
    <div class="c"></div>
    <textarea>two</textarea>
    <div class="c"></div>
  </div>
  <div>
    <textarea>three</textarea>
  </div>
  <div>
    <div class="a"></div>
    <textarea>four</textarea>
  </div>
</div>