使用Typescript从JSON文件中提取字符串

Question

我目前正在尝试从JSON对象中提取数据。解析后并尝试访问其中的数据。我能够成功获取JSON对象的数值和布尔值，但字符串对象只返回一个空字符串。有什么我想念的吗？我假设代码是正确的，因为我得到其他值就好了。如果需要帮助，我可以发布代码。

提前致谢。

编辑：

//getting the object layer of the TILED map in a for loop
for (var layeridX = 0; layeridX < TILEDATA_CACHE[index].layers.length; layeridX++) {
            if (TILEDATA_CACHE[index].layers[layeridX].type !== "objectgroup") continue;
            var tileObjects = TILEDATA_CACHE[index].layers[layeridX].objects;

           var obj = {
                "name": "",
                "width": 0,
                "x": 0,
                "y": 0
            };
...other irrelevant code here...

    obj.name = tileObjects[x].name; //PROBLEM, it gives a blank string
    obj.x = tileObjects[x].x; //works fine, gives the value in the json
}

我试图拉的json的具体部分是

"objects":[
            {
             "gid":21,
             "height":0,
             "name":"object1",
             "properties":
                {
                 "exit":"true"
                },
             "type":"1",
             "visible":true,
             "width":0,
             "x":63,
             "y":57
            }, 
            {
             "gid":22,
             "height":0,
             "name":"object2",
             "properties":
                {

                },
             "type":"2",
             "visible":true,
             "width":0,
             "x":158,
             "y":95
            }, 
            {
             "gid":16,
             "height":0,
             "name":"object3",
             "properties":
                {

                },
             "type":"3",
             "visible":true,
             "width":0,
             "x":10,
             "y":189
            }, 
            {
             "gid":17,
             "height":0,
             "name":"object4",
             "properties":
                {

                },
             "type":"4",
             "visible":true,
             "width":0,
             "x":156,
             "y":227
            }],
     "opacity":1,
     "type":"objectgroup",
     "visible":true,
     "width":20,
     "x":0,
     "y":0
    }],