add class in child after clone

i want to addClass in child after clone. i want to add class select2 because when i clone select2 too, its not responding.

$(document).ready(function() {
  addBarang();
});

function addBarang() {
  var new_barang = $(".hidden_input").find(".barang_in").clone().addClass("barang_in_clone");
  $(".target_clone:last").append(new_barang);
  //        $(".barang_in_clone:has(select)").addClass("select2");
}

$('body').on('click', '.btn_kurangi_barang', function() {
  $(this).closest('.barang_in_clone').remove();
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
  <div class="hidden_input" style="display: none">
    <div class="barang_in">
      <label class="col-md-4 control-label">Kode Hanca</label>
      <select name="id_vendor_detail" class="form-control" required="">
        <option value="">- PILIH -</option>
        <option value="1">- Orange -</option>
        <option value="2">- Pink -</option>
        <option value="3">- Red -</option>

      </select>
      <button onclick="addBarang()" type="button" data-toggle="tooltip" data-placement="top" title="tambah vendor" class="btn btn-info btn-flat btn-xs pull-left btn_tambah_vendor"><i class="fa fa-plus"></i> add</button>
      <button type="button" data-toggle="tooltip" data-placement="top" title="kurangi barang" class="btn btn-danger btn-flat btn-xs pull-right btn_kurangi_barang"><i class="fa fa-minus"></i> Remove</button>
    </div>
  </div>
  <div class='target_clone'>
  </div>

</body>

how to addclass select2 in select ?

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Solution

Using $(".barang_in_clone select").addClass("select2"); selector you can able to add class in select of cloned HTML.

Please check below snippet for better understanding.

$(document).ready(function() {
  addBarang();
});

function addBarang() {
  var new_barang = $(".hidden_input").find(".barang_in").clone().addClass("barang_in_clone");
  $(".target_clone:last").append(new_barang); 
  $(".barang_in_clone select").addClass("select2");
  $(".select2").select2();
}

$('body').on('click', '.btn_kurangi_barang', function() {
  $(this).closest('.barang_in_clone').remove();
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>
<body>
  <div class="hidden_input" style="display: none">
    <div class="barang_in">
      <label class="col-md-4 control-label">Kode Hanca</label>
      <select name="id_vendor_detail" class="form-control" required="">
        <option value="">- PILIH -</option>
        <option value="1">- Orange -</option>
        <option value="2">- Pink -</option>
        <option value="3">- Red -</option>

      </select>
      <button onclick="addBarang()" type="button" data-toggle="tooltip" data-placement="top" title="tambah vendor" class="btn btn-info btn-flat btn-xs pull-left btn_tambah_vendor"><i class="fa fa-plus"></i> add</button>
      <button type="button" data-toggle="tooltip" data-placement="top" title="kurangi barang" class="btn btn-danger btn-flat btn-xs pull-right btn_kurangi_barang"><i class="fa fa-minus"></i> Remove</button>
    </div>
  </div>
  <div class='target_clone'>
  </div>

</body>