无法从JSON访问值

Question

我有这个JSON字符串:

{
    "attachedFiles": [{
        "link": "/site.com/dir?id=12993&SESSION=40af90dd-c1f3-4678-93e5-a4b36f3597b0&SESSIONTICKET=SESS:67bf209be2",
        "fileName": "file1.txt",
        "docDate": "24.02.2014",
        "docTime": "13:54",
        "docId": "12993"
    }],
    "requestId": 48,
    "tasksId": 0,
    "workId": 10558
}

我正在转换它:

var resdata = xhr.responseText; // the string response from the server
var resObj = JSON.parse(resdata);

然后我试图通过下面的代码访问(打印值)对象fileName内部attachedFiles:

console.log(resObj.attachedFiles.fileName);

它总是回归undefined.我知道我在这里捏着一些很小的东西,但是我无法发现它.

Answer 1

attachedFiles是数组.因此,尝试使用索引器访问数组内容

resObj.attachedFiles[0].fileName // 0th index, 1st Element

访问数组中的所有元素.感谢@Cerbus评论

for(var i = 0, l = resObj.attachedFiles.length; i < l;i++)
{
   console.log(resObj.attachedFiles[i].fileName);
}