$('#Search').ajaxForm({

                    url: "../php/getArticle.php", // path to your script
                    dataType: 'json',       //This makes sure the data is handled as JSON
                    success: showResponse   //Call the function below if succeeded
                }) ;

              function showResponse(data)  {

                $('#first').val(data.First);    //add the first value of the JSON data to the first element
                $('#second').val(data.Second);
        [...]