<script type="text/javascript">

    function LoadData(arg){       

         arg.dept=$("#DeptStr").val();

         arg.clas=$("#ClassStr").val();

         arg.user=$("#UserName").val();

         arg.tno=$("#tNo").text();

         console.log(arg);

         var JsonData = JSON.stringify(arg);

         console.log(JsonData);

        $.ajax({

            type: 'POST',

            url: "AP_TrainSatisfaction_Json.php",

            contentType :"application/json", // 很重要

            data: JsonData,

            dataType: 'json',

            success: function(data){

                console.log(data);

                      // document.getElementById("mark").innerHTML=data["yesNo"];

            }, //end success

           error: function(data){

                console.log(data);

                alert( "error!!!"+data );

            } //end error

        });

    }

    </script>

header("Content-Type: text/html;charset=utf-8");

header("Content-type:text/json ");

$info = file_get_contents("php://input");

$data=json_decode($info,true);

$XYdata=json_encode($data);

echo $XYdata;