anchor.diff:                            </div>
                         </div>
                         <div class="radio">
  -                          <label><input type="radio" name="optradio" value="new">
  +                          <label><input type="radio" name="optradio" value="new" <%= jsonApp.isEmpty() ?  "" : "checked" %>>
                                 <button type="button" class="btn btn-default btn-xs" data-toggle="collapse" data-target="#jsonTextArea2">new json</button>
                                 customizable object
                             </label>
  
positive.code:                     welcome();
                  }
              );
          
            var json2 = JSON.stringify(defaultJson, null, 2);
            $('#jsonArea2').val(json2);
        </script>
negative.code:               <div class="modal-body" style="max-height: calc(100vh - 210px); overflow-y: auto;">
                    <form>
                        <div class="radio">
                            <label><input type="radio" name="optradio" value="old" <%= jsonApp.isEmpty() ?  "checked" : "" %>>
                                <button type="button" class="btn btn-default btn-xs" data-toggle="collapse" data-target="#jsonTextArea1" onClick="filljsonArea1()">default json</button>
                                object can not be changed
                            </label>
  