jquery - Dynamically adding and removing element from HTML DOM -


i working on html page there list of items in table , on clicking item new tab generated showing details of item clicked. using jquery-ui tabs dynamically creating tabs. need open tab item if tab not exist item. use below code achieve this

if(! $('#selector').length ) {    //create new tab item }

i use tabs unique id each item. code works when loading tab first time, problem have x button close tab , on click f button remove tab division html dom using jquery .remove() function. way tab gets removed when try add tab particular item after removing once. above code doesn't work shows tab exist. , new tab not getting created. how can remove element html dom above code works recreating tabs after removing once. in advance 

<body>     <div id='tabs'>          <ul>          </ul>      </div> </body> <script>     $(document).ready(function(){           $("#tabs").tabs();          $(document).on('click', '.clickable_sellername', function(){              debugger;             var sellerid = parseint(this.id.split('_')[2]);             var sellername = $(this).text();              if($('#tabindex_'+sellerid).length == 0){                  $.ajax({                     type:"get",                     url :"/myadmin/loadprofile",                     data:{ 'sellerid':sellerid },                     datatype:"html",                     success: function(data){                          // add new tab                         $("#tabs ul").append("<li id='tabindex_"+sellerid+"' ><a href='#sellertab_" + sellerid + "'>" +  sellername + "</a><a href='#' id='close_"+sellerid + "' class='ui-tabs-anchor remove' role='presentation' >x</a></li>");                          // add content newly added tab                         $("#tabs").append("<div id='sellertab_"+sellerid+"' ></div>");                         $('#sellertab_'+sellerid).html(data)                          // refresh tabs add newley added tab                         $("#tabs").tabs("refresh");                      }                 });                 return false;             }         });          $(document).on('click', '.remove', function(){              // tab number of pressed close button             var sellerid = parseint(this.id.split("_")[1]);              // remove tabindex             $('#tabindex_'+sellerid).remove();              // remove tab content             $('#sellertab_'+sellerid).remove();              //refresh tabs             $('#tabs').tabs("refresh");          });      }); 

$('#selector').length

returns non 0 value "list" element after removing dom using jquery .remove() whereas in case of "div" element returns 0 above expression after removing div using .remove(). used "div" element checking purpose ie use

if($('#sellertab_'+sellerid).length == 0)

instead of 

if($('#tabindex_'+sellerid).length == 0)

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