问jquery UI对话框看不到在对话框外部定义的变量

EN

    const oldAnswers: Array<IUserAnswer> = new Array<IUserAnswer>();
    const newAnswers: Array<IUserAnswer> = new Array<IUserAnswer>();
    const updatedAnswers: Array<IUserAnswer> = new Array<IUserAnswer>();
    
    $('form').map(function(){  
        //.....omitted code to change the above variables
    }
    $("#dialog").dialog({
      resizable: true,
      height: "auto",
      width: 400,
      modal: true,
      buttons: {
        "Save": function () {
          let thisUrl: string = $('#submit').attr('formAction');
          //ToDo: ajax post here
          let postBackModel: AjaxPostbackModel;
          postBackModel.NewAnswers = newAnswers;
          postBackModel.OldAnswers = oldAnswers;
          postBackModel.UpdatedAnswers = updatedAnswers;
          alert('ToDo: sending ajax postBackModel to ' + thisUrl);
        },
        Cancel: function () {
          $(this).dialog("close");
        }
      }
    });