cloning checkbox

HTML

<section class="misc"> 
						<div class="row">
						 <label class="label"><input type="checkbox" class="others"> Others:</label>					 
						</div>			 
						 
						<div class="row">
						 <div class="col-md-6"><input type="text" class="form-control" placeholder="Others"/></div>	
						</div>
						</section>
						<div class="sth"></div>

JavaScript

$(".others").change(function(){
						
					 if($(this).is(':checked'))
						{
							var htmlcode=$(this).parents('section').clone();
							$('.sth').html(htmlcode);
						}

					});