</li> <li data-lvl="lvl2"> <input type="text"> <i class="addBtn fa fa-plus-square fa-lg cur"></i> </li> </ul> </li> <li data-lvl="lvl1"> <input type="text"> <i class="addBtn fa fa-plus-square fa-lg cur"></i> </li> </ul> <?php include_once '../model/productCategory.php'; echo ProductCategory::getAllTree(); ?> <!-- </form> --> </div> </div> </div> </div> <script> function addItems() { $(".addBtn").click(function() { var textIn = $(this).prev().val(); var lastLine = $(this).parent(); if(textIn != '')//pseudo fixed { var categLvl = $(this).parent().attr("data-lvl");//li //level data that is to be fetched from every list element