Question

我试图在我的ajax上获得一个简单的json，将值设置为我页面上的某些输入，但我总是在我的ajax警报上得到一个未定义的

这是我的JSON：

{"data":[{"Line_Number":10,"PO_Number":"P072592-1","Date":"9-07-17","Item_Number":"12789 - ","Size":"S","Description":"HDW- HINGE- PIANO- BLACK STAINLESS- .125 DIA.- HD SERIES","Delivery":"12-18-17","Quantity":800.0000,"Unit":"PCS","Unit_Price":0.8600,"Amount":"688"}]}

这是我的Ajax电话：

$.ajax({
    type: "GET",
    dataType: "json",
    url: '@Url.Action("GetOrder","Orders")/' + val,
    //data: { po_number: 'value' },
    success: function (data) {
        alert(data[0].Date)
    },
    error: function () {
         alert('Some error occurred!');
    }
});

但是我总是在警报上得到一个未定义的，我需要的是我的“日期”值我做错了什么？

Answer 1

示例尝试此操作 - ＆gt;

      var obj = {"data":[{"Line_Number":10,"PO_Number":"P072592-1","Date":"9-07-17","Item_Number":"12789 - ","Size":"S","Description":"HDW- HINGE- PIANO- BLACK STAINLESS- .125 DIA.- HD SERIES","Delivery":"12-18-17","Quantity":800.0000,"Unit":"PCS","Unit_Price":0.8600,"Amount":"688"}]};
       alert('Line_Number ='+obj.data[0].Line_Number+', PO_Number ='+obj.data[0].PO_Number);

Answer 2

我看到你的数据是

{"data":[{"Line_Number":10,"PO_Number":"P072592-1","Date":"9-07-17","Item_Number":"12789 - ","Size":"S","Description":"HDW- HINGE- PIANO- BLACK STAINLESS- .125 DIA.- HD SERIES","Delivery":"12-18-17","Quantity":800.0000,"Unit":"PCS","Unit_Price":0.8600,"Amount":"688"}]}

所以你应该尝试一次

data.data[0].Date

Answer 3

试试这个：

...
success: function (response) {
    alert(response.data[0].Date)
},
...

为什么呢？ data是您的响应json中的一个键，因此您将收到一个包含它的对象（我将其简称为响应）。

JSON AJAX返回“Undefined”

3 个答案: