javascript - How to not switch to the first or last "li element" when they are next in line? -

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i have pagination bar , switch next button if click "next" or "prev" arrow buttons.

i wrote code stay on current "page" number if next item in list ".next" or ".prev", not working.

what missing?

$(document).ready(function() {       var pageitem = $(".pagination li").not(".prev,.next");       var prev = $(".pagination li.prev");       var next = $(".pagination li.next");           pageitem.click(function() {         $('li.active').removeclass("active");         $(this).addclass("active");       });           // stay on current button if next or prev button ".next" or ".prev"         next.click(function() {          if($('li.active').next() != next) {            $('li.active').removeclass('active').next().addclass('active');          }       });         prev.click(function() {          if($('li.active').prev() != prev) {            $('li.active').removeclass('active').prev().addclass('active');          }       });         });
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet"/>  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <nav>            <ul class="pagination">              <li class="prev">                <a href="#"><span>&laquo;</span></a>              </li>              <li class="active"><a href="#">1</a></li>              <li><a href="#">2</a></li>              <li><a href="#">3</a></li>              <li><a href="#">4</a></li>              <li><a href="#">5</a></li>              <li class="next">                <a href="#"><span>&raquo;</span></a>              </li>            </ul>          </nav>

all need check class name, please check below updated code

$(document).ready(function() {       var pageitem = $(".pagination li").not(".prev,.next");       var prev = $(".pagination li.prev");       var next = $(".pagination li.next");           pageitem.click(function() {         $('li.active').removeclass("active");         $(this).addclass("active");       });           // stay on current button if next or prev button ".next" or ".prev"         next.click(function() {          if($('li.active').next().attr('class') != 'next') {            $('li.active').removeclass('active').next().addclass('active');          }       });         prev.click(function() {          if($('li.active').prev().attr('class') != 'prev') {            $('li.active').removeclass('active').prev().addclass('active');          }       });         });
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet"/>  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <nav>            <ul class="pagination">              <li class="prev">                <a href="#"><span>&laquo;</span></a>              </li>              <li class="active"><a href="#">1</a></li>              <li><a href="#">2</a></li>              <li><a href="#">3</a></li>              <li><a href="#">4</a></li>              <li><a href="#">5</a></li>              <li class="next">                <a href="#"><span>&raquo;</span></a>              </li>            </ul>          </nav>


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