how to remove elements with jquery code example

Example 1: remove item jquery

$( ".hello" ).remove();

Example 2: jquery remove elemtns

.remove("#elemnt_id .elemnt_class");

Example 3: delete div based on select

$('#record_nav ul li').on('click', function(e){
      $('#record_nav ul li.selected').removeClass('selected');
      $(this).addClass('selected');
      $('.content').hide();
      var id = $(this).data('target');
      $(id).show();
  });