arrays - 访问 JSON 数组的内部元素

Question

如何访问 JSON 数组的内部元素。我的 Json 对象如下：

"numRecommenders": 0,
    "publicProfileUrl": "http://www.linkedin.com/pub/heena-vyas/16/786/826",
    "positions": {
        "total": 1,
        "positionList": [
            {
                "id": "91286566",
                "title": "senior executive",
                "company": {
                    "name": "Reliance",
                    "industry": "Oil & Energy",
                    "type": "Public Company",
                    "size": "10,001+ employees"
                },
                "isCurrent": true
            }
        ]
    },

我想访问positions.positionList.company.name. 我的要求是运行GroupCommand如下：

GroupCommand cmd = new GroupCommand(collection,
        null,
        new BasicDBObject("positions.positionList.company.name", "Reliance"),
        new BasicDBObject("count", 0),
        "function(obj,prev) {prev.count++;}",
        null);

使用上述代码访问“名称”不起作用。有人可以给我一个答案，为什么不呢？

Answer 1

var name = jsonObject.positions.positionlist[0].company.name;

请注意，您positionlist是一个长度数组jsonObject.positions.total。