如何通过逗号获取json数据？ JS

Question

尝试使用逗号过滤位置数据时，但出现错误 [object Object],[object Object],[object Object Object],[object Object] 数据json：

{
  "command": "lok",
  "params": {
    "action": "test",
  },
  "response": {
    "skc": "D400",
    "location": [
      {
        "city": "Lond.",
        "location": "1m23"
      },
      {
        "city": "Lond.",
        "location": "2df65"
      },
      {
        "city": "Lond.",
        "location": "3sk56"
      }
    ]
  }
}

js代码如下所示：

var lk = data.response.location;
console.log(lk);
var ghlok = lk.filter(function (item) {
        return item.location;
      }).join(",");
      console.log(ghlok);

console.log(lk);

给出位置

{"city": "Lond.", "location": "1m23"}...

console.log(ghlok);

输出

[object Object Object],[object Object],...

我添加了

var par = JSON.parse(lk);

但我收到错误

意外的标记“o”，“[object Object Object”...不是有效的 JSON

Answer 1

var lk = data.response.location;
console.log(lk);

var ghlok = lk.map(function (item) {
  return item.location;
}).join(",");

console.log(ghlok);