Javascript 无法正确解析 JSON 中的对象

Question

我正在尝试获取重复框来填充 JSON 文档中的对象。但是，它不会添加每个项目，而是添加 JSON 文档中第一个项目的多个副本。有什么线索可以解释为什么吗？

我使用以下代码从 JSON 文档中提取对象。

function Project_WebClient1_OnSyndicationSuccess(e){
      var FactsArray = [];
    var parsedResponse = JSON.parse(this.responseText);
    var numOfFacts = parsedResponse.results.length;
    for (var i = 0; i < numOfFacts; i++) {
        var FactsObject = {};
        FactsObject.heading = parsedResponse.results[i].heading;
        FactsObject.ReleaseDate = parsedResponse.results[i].ReleaseDate;   
        FactsObject.url = parsedResponse.results[i].url;      
        FactsArray.push(FactsObject);
        log(FactsObject.heading);
    }
            Pages.pgFundInfo.RepeatBox1.dataSource = FactsArray;
            Pages.pgFundInfo.RepeatBox1.refresh();
Data.notify("Data.FactSheets_OutDSetFactSheets.FactSheetsId");
}

这是 JSON 文档:

{
    "results": [
        {
            "FactFile": {
                "__type": "File",
                "name": "Sept2015.pdf",
                "url": "http://files.sample.com/Sept2015.pdf"
            },
            "Heading": "Medium Growth September",
            "ReleaseDate": {
                "__type": "Date",
                "iso": "2015-09-30T06:29:00.000Z"
            },
            "createdAt": "2015-10-31T06:28:03.189Z",
            "objectId": "XUS4guS8Hu",
            "updatedAt": "2015-11-04T10:00:37.092Z"
        },
        {
            "FactFile": {
                "__type": "File",
                "name": "MedConsGrowthSept2015.pdf",
                "url": "http://files.sample.com/MedConsGrowthSept2015.pdf"
            },
            "Heading": "Medium-Conservative Growth September",
            "ReleaseDate": {
                "__type": "Date",
                "iso": "2015-09-30T06:30:00.000Z"
            },
            "createdAt": "2015-10-31T06:31:18.502Z",
            "objectId": "LOLyM2KX5g",
            "updatedAt": "2015-11-04T10:00:40.561Z"
        },
        {
            "FactFile": {
                "__type": "File",
                "name": "HiMedGrowthSept2015.pdf",
                "url": "http://files.sample.com/HiMedGrowthSept2015.pdf"
            },
            "Heading": "High-Medium Growth September",
            "ReleaseDate": {
                "__type": "Date",
                "iso": "2015-09-30T06:50:00.000Z"
            },
            "createdAt": "2015-10-31T06:50:54.367Z",
            "objectId": "I59ZKa5Onq",
            "updatedAt": "2015-11-04T10:00:47.268Z"
        },
        {
            "FactFile": {
                "__type": "File",
                "name": "HiGrowthSept2015.pdf",
                "url": "http://files.sample.com/HiGrowthSept2015.pdf"
            },
            "Heading": "High Growth September",
            "ReleaseDate": {
                "__type": "Date",
                "iso": "2015-09-30T06:52:00.000Z"
            },
            "createdAt": "2015-10-31T06:52:05.618Z",
            "objectId": "m4vkEDBgRr",
            "updatedAt": "2015-11-04T10:00:52.294Z"
        },
        {
            "FactFile": {
                "__type": "File",
                "name": "ConsGrowthSept2015.pdf",
                "url": "http://files.sample.com/ConsGrowthSept2015.pdf"
            },
            "Heading": "Conservative Growth September",
            "ReleaseDate": {
                "__type": "Date",
                "iso": "2015-09-30T06:53:00.000Z"
            },
            "createdAt": "2015-10-31T06:53:27.399Z",
            "objectId": "bthR88Ck8y",
            "updatedAt": "2015-11-04T10:00:55.160Z"
        },
        {
            "FactFile": {
                "__type": "File",
                "name": "PerformerSept2015.pdf",
                "url": "http://files.sample.com/PerformerSept2015.pdf"
            },
            "Heading": "Multi-Asset Class Portfolio Range September",
            "ReleaseDate": {
                "__type": "Date",
                "iso": "2015-09-30T06:55:00.000Z"
            },
            "createdAt": "2015-10-31T06:55:32.021Z",
            "objectId": "JluOn1O0IO",
            "updatedAt": "2015-11-04T10:00:58.839Z"
        }
    ]
}

我得到了正确数量的结果，但是，在我的重复框中，它列出了它们，但全部使用第一个条目中的数据，而不是其余条目。

我在 for 循环中做错了什么？

Answer 1

根据您的 JSON 文档，循环的这一部分

FactsObject.heading = parsedResponse.results[i].heading;
FactsObject.ReleaseDate = parsedResponse.results[i].ReleaseDate;   
FactsObject.url = parsedResponse.results[i].url;  

应该重写为

FactsObject.heading = parsedResponse.results[i].Heading; // notice the capital H
FactsObject.ReleaseDate = parsedResponse.results[i].ReleaseDate; // maybe use the .iso attribute, if you don't want to assign the whole object  
FactsObject.url = parsedResponse.results[i].FactFile.url;  // notice the FactFile     

否则它将得到未定义结果。

但我不确定是什么导致了只获取第一项而不是每一项的问题。

编辑:

如果我只是运行

for (var i = 0, len = parsedResponse.results.length; i < len; i++) {
    console.log(parsedResponse.results[i]);
}

我多次获得每个单独的项目，而不是第一个项目。

参见http://jsfiddle.net/q2burjk3/