<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <form class="form-horizontal" role="form"> <div class="form-group"> <label for="inputEmail3" class="col-sm-2 control-label">Email</label> <div class="col-sm-10"> <input type="email" class="form-control" id="inputEmail3" placeholder="Email"> </div> </div> <div class="form-group"> <label for="inputPassword3" class="col-sm-2 control-label">Password</label> <div class="col-sm-10"> <input type="password" class="form-control" id="inputPassword3" placeholder="Password"> </div> </div> <div class="form-group"> <div class="col-sm-offset-2 col-sm-10"> <div class="checkbox"> <label> <input type="checkbox"> Remember me </label> </div> </div> </div> <div class="form-group"> <div class="col-sm-offset-2 col-sm-10"> <button type="submit" class="btn btn-default">Sign in</button> </div> </div> </form>

#main { margin: 15px auto; width: 600px; }

$(function() { $(document).on('click', '.btn-add', function(e) { e.preventDefault(); var controlForm = $('.controls form:first'), currentEntry = $(this).parents('.entry:first'), newEntry = $(currentEntry.clone()).appendTo(controlForm); newEntry.find('input').val(''); controlForm.find('.entry:not(:last) .btn-add') .removeClass('btn-add').addClass('btn-remove') .removeClass('btn-success').addClass('btn-danger') .html('<span class="glyphicon glyphicon-minus"></span>'); }).on('click', '.btn-remove', function(e) { $(this).parents('.entry:first').remove(); e.preventDefault(); return false; }); });