Question

我无法从JSON对象解析属性。由于这只是一个JSON对象，我不确定是否需要执行$.each或者我可以直接获取属性data.d.property。有人可以解释我如何从这个对象中获取属性值吗？

这就是我所拥有的：

jQ(document).ready(function() {  
  var listDataURL = "";
  var root =  getParameterByName('RootFolder');
  var rootFolderID = getParameterByName("ID");
  var docSetTitle = root.substr(root.lastIndexOf('/') + 1);      
  listDataURL = "http://SomeSite/sites/TestWF/_vti_bin/listdata.svc/ResumeBank(" + rootFolderID +")";
      //use the getJSON mehtod of Jquery
      jQ.getJSON(listDataURL, function(data, status, jqXHR) {
        console.log(jqXHR.responseText);
        //iterate through all the items 
         jQ.each(data.d.results, function(i, result) {          
          //get child items count for the current set           
          ChildItemCount = result.ItemChildCount;
          NumOfItemsApproved = result.ApprovalCounter;

          });
          if (ChildItemCount !== NumOfItemsApproved){
            alert("Ah ah! The ApprovalCounter got skewed and needs to be fixed.");
          }
          if (ChildItemCount === NumOfItemsApproved){
            alert("ApprovalCounter looks good!");
          }
      });
});

JSON响应如下，我试图抓住ApprovalCounter的值：

{  
   "d":{  
      "__metadata":{  
         "uri":"http://collaboration/sites/TestWF/_vti_bin/listdata.svc/ResumeBank(84)",
         "etag":"W/\"12\"",
         "type":"Microsoft.SharePoint.DataService.ResumeBankItem",
         "edit_media":"http://collaboration/sites/TestWF/_vti_bin/listdata.svc/ResumeBank(84)/$value",
         "media_src":"http://collaboration/sites/TestWF",
         "content_type":"text/xml"
      },
      "Id":84,
      "ContentTypeID":"0x0120D52000E387E9726C57FE40807A71CC05BEF45A005D5A666FE9576E42B629AF7CDB33F1B0",
      "ContentType":"JobApplication",
      "Created":"\/Date(1413213951000)\/",
      "CreatedBy":{  
         "__deferred":{  
            "uri":"http://collaboration/sites/TestWF/_vti_bin/listdata.svc/ResumeBank(84)/CreatedBy"
         }
      },
      "CreatedById":1,
      "Modified":"\/Date(1413561633000)\/",
      "ModifiedBy":{  
         "__deferred":{  
            "uri":"http://collaboration/sites/TestWF/_vti_bin/listdata.svc/ResumeBank(84)/ModifiedBy"
         }
      },
      "ModifiedById":1,
      "CopySource":null,
      "ApprovalStatus":"2",
      "ApproverComments":null,
      "Path":"/sites/TestWF/ResumeBank",
      "CheckedOutTo":{  
         "__deferred":{  
            "uri":"http://collaboration/sites/TestWF/_vti_bin/listdata.svc/ResumeBank(84)/CheckedOutTo"
         }
      },
      "CheckedOutToId":null,
      "Name":"Tabitha Johnson",
      "VirusStatus":"",
      "IsCurrentVersion":true,
      "Owshiddenversion":12,
      "Version":"1.0",
      "Title":"Tabitha Johnson",
      "Description":null,
      "RoleAppliedFor":"HR Assistant",
      "HiringDepartment":{  
         "__deferred":{  
            "uri":"http://collaboration/sites/TestWF/_vti_bin/listdata.svc/ResumeBank(84)/HiringDepartment"
         }
      },
      "HiringDepartmentValue":"HR",
      "FirstRoundApproval":null,
      "StartDate":"\/Date(1413158400000)\/",
      "ApprovalCounter":0,
      "Education":null,
      "Experience":null,
      "ApproveEachDoc":null,
      "ApproveDocSet1st":"2",
      "ApproveDocSet2nd":"2"
   }
}

Answer 1

它应该只是data.d.ApprovalCounter

Answer 2

问题出在您的$.each()函数中。

jQ.each(data.d.results, function(i, result) { ... }

$。each（）正在寻找一个迭代的数组，然后是一个回调作为参数。

您的数组是嵌套在“d”对象中的所有json对象。那很好。

您的回调指定了一个“键值”对function(i, result)，当循环到达{ "ApprovalCounter" : "0" }对象时，i =“审批计数器”，结果=“0”。 ......所以results.Anything会引发错误。

长话短说：

将其更改为：

JQ.each(data.d.results, function(results)) {
    //...
    var count = results.ApprovalCounter;
    //...
}

它应该有用......

<强>可替换地：

您根本不需要使用$ .each（）循环来访问“ApprovalCounter”中的值。

data.d.ApprovalCounter

...应该返回“0。”

希望这有帮助！

检索从$ .getJSON返回的Json Object的属性

2 个答案: