javascript - 无法访问 JSON 数组中的项目？

Question

我正在发送一个返回以下内容的请求:

{
    "title": "Recent Uploads",
    "link": "http://www.flickr.com/photos/",
    "description": "",
    "generator": "http://www.flickr.com/",
    "items": [
   {
        "title": "Title 1",
        "link": "http://www.flickr.com/photos/123"
   } ]
}

然而，当我尝试访问其中的内容时，我得到一个“未定义”值:

xml.onreadystatechange = function () {
    if (xml.readyState == 4 && xml.status == 200) {
        var rsp = xml.rspTxt
        console.log(rsp.title);
    }
}

我做错了什么？据我所知，这应该有效......

编辑:Fiddle .

Answer 1

这是因为您的 JSON 根本不是有效的 JSON..

var test = {
    "title": "Recent Uploads",
    "link": "http://www.flickr.com/photos/",
    "description": "",
    "generator": "http://www.flickr.com/",
    "items": {

        "title": "Title 1",
        "link": "http://www.flickr.com/photos/123"
    }
};

console.log(test.title);

这工作正常，并在控制台中显示“最近上传”。不能有“[”和“,”在末尾。