JavaScript中无法正确遍历AJAX返回JSON数据的问题求助

我无法正确遍历AJAX返回的JSON数据，该JSON格式看似正常，但使用JSON.Parse()无法解析成功。不过返回的前两个$_POST变量可以正常使用。我怀疑问题出在该JSON是通过后端echo输出的JSON数组返回给AJAX的，但奇怪的是将其保存为本地local.json文件后却能正常解析。

{
    "0": {
      "Name": "QG",
      "Guid": "3e2e4830-7954-4248-b580-03aa04f3add8",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "1": {
      "Name": "OR",
      "Guid": "51f61b92-2b88-4820-a3a4-042c79844e5d",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "2": {
      "Name": "4O",
      "Guid": "90ccb0c9-ab7a-4d3e-94d0-09a9983bbce7",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "3": {
      "Name": "VV",
      "Guid": "16047f72-2ee0-4cc0-acd8-0c19e9a2694c",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "4": {
      "Name": "5F",
      "Guid": "4e7bcd95-44fd-4d10-a586-14a5e77f6e22",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "5": {
      "Name": "FR",
      "Guid": "1ca5a5ce-ac5c-4fd7-8f10-14a8585d4de9",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "6": {
      "Name": "6B",
      "Guid": "f76307dd-4500-4ace-a756-1b4b207801c2",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "7": {
      "Name": "AK",
      "Guid": "3ffbb7a5-e5a4-458f-a9c7-1f8a29df58dc",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "8": {
      "Name": "MK",
      "Guid": "e51e3daa-d10f-43ce-b3ce-202bb9e5f227",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "9": {
      "Name": "VH",
      "Guid": "c332aa7b-0a3a-4b24-920a-20e4273c7902",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    },
    "10": {
      "Name": "3K",
      "Guid": "d33da5b4-29cf-401f-8880-27d773d56d2b",
      "TypeName": "PresentationFolder",
      "LongTypeName": "Altiris.NS.ItemManagement.PresentationFolder",
      "TypeGuid": "f1e8956a-a158-487f-8185-4c3b492734e7",
      "ParentFolderName": "HELLO_WORLD",
      "ParentFolderGuid": "e3ceea75-510e-4900-bb5f-6b0d47309bd3",
      "Attributes": "Normal",
      "Enabled": "false",
      "IsSchedulableItem": "false",
      "ScheduleEnabled": "false",
      "SharedScheduleGuid": "00000000-0000-0000-0000-000000000000"
    }
}

UPDATE #

我终于能正确显示JSON数据了，通过设置变量为var json = data.body[0];并使用$('.modal-body').html('<pre>' + JSON.stringify(json, null, 2) + '</pre>');输出，但现在无法用.each()语句遍历所有对象，只能获取到JSON的最后一个值。

最终可用代码 #

if (data.body[0][1] !== undefined) {
var json = data.body[0];
} else {
var json = data.body;
}

const mappedItems = $.map(json, function(item) {
const html = `<div class='table-responsive' style='padding-top:20px;'>

    <table class="table color-bordered-table info-bordered-table">
        <thead>
            <tr style="white-space: nowrap; text-align: center;">
                <th>IATA</th>
                <th>Guid</th>
                <th>Type Name</th>
                <th>Long Type Name</th>
                <th>Type Guid</th>
                <th>Parent Folder Name</th>
                <th>Parent Folder Guid</th>
                <th>Attributes</th>
                <th>Enabled</th>
                <th>Is Scheduled Item</th>
                <th>Schedule Enabled</th>
                <th>Drill Down</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>${item.Name}</td>
                <td>${item.Guid}</td>
                <td>${item.TypeName}</td>
                <td style="inline-size: 160px;word-break: break-all;">${item.LongTypeName}</td>
                <td>${item.TypeGuid}</td>
                <td>${item.ParentFolderName}</td>
                <td>${item.ParentFolderGuid}</td>
                <td>${item.Attributes}</td>
                <td>${item.Enabled}</td>
                <td>${item.IsSchedulableItem}</td>
                <td>${item.ScheduleEnabled}</td>
                <td><button type="button" name="'.$value->Name.'" value="'.$value->Guid.'" class="btn btn-primary"
                        style="width:150px" onclick="modalData(this)">Full screen</button></td>
            </tr>
        </tbody>
    </table>
</div>`;
return `${html}`;
});
$('.modal-body').html(mappedItems);

内容的提问来源于stack exchange，提问作者demo7up