将JSON对象解压缩并重命名为不同的格式

我正在从Foursquare API请求场地数据，但不会以geoJSON格式返回。我之前没有使用JSON，我也不知道如何处理这个问题。

我是否会遍历该对象并构建一个必要的对象值的JavaScript array？如何使用相同的键选择所有值？是否可以从JSON响应中删除特定值并根据需要重命名其他值？这里最好的方法是什么？

下面我已经发布了我想要实现的输入和所需输出。

INPUT

{
    "meta": {
        "code": 200,
        "requestId": "57c63303498e78d449981c2c"
    },
    "response": {
        "venues": [{
            "id": "430d0a00f964a5203e271fe3",
            "name": "Brooklyn Bridge Park",
            "location": {
                "address": "Main St",
                "crossStreet": "Plymouth St",
                "lat": 40.70303245363086,
                "lng": -73.99389265510275
            }
        }, {
            "id": "51eabef6498e10cf3aea7942",
            "name": "Brooklyn Bridge Park - Pier 2",
            "contact": {},
            "location": {
                "address": "Furman St",
                "crossStreet": "Brooklyn Bridge Park Greenway",
                "lat": 40.69957016220183,
                "lng": -73.99793274204788
            }
        }]
    }
}

OUTPUT

[{
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [-73.99389265510277, 40.703032453630854]
    },
    "properties": {
        "id": "430d0a00f964a5203e271fe3",
        "name": "Brooklyn Bridge Park",
        "location": {
            "address": "Main St",
            "crossStreet": "Plymouth St",
            "lat": 40.703032453630854,
            "lng": -73.99389265510277
        }
    }
}, {
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [-73.9979327420479, 40.69957016220184]
    },
    "properties": {
        "id": "51eabef6498e10cf3aea7942",
        "name": "Brooklyn Bridge Park - Pier 2",
        "location": {
            "address": "Furman St",
            "crossStreet": "Brooklyn Bridge Park Greenway",
            "lat": 40.69957016220184,
            "lng": -73.9979327420479
        }
    }
}]

您可以通过将响应保存到变量中来完成此操作。别忘了JSON.parse吧。然后，您可以使用Array#map方法将其转换为您自己的格式。

let obj = {
  "meta": {
    "code": 200,
    "requestId": "57c63303498e78d449981c2c"
  },
  "response": {
    "venues": [{
      "id": "430d0a00f964a5203e271fe3",
      "name": "Brooklyn Bridge Park",
      "location": {
        "address": "Main St",
        "crossStreet": "Plymouth St",
        "lat": 40.70303245363086,
        "lng": -73.99389265510275
      }
    }, {
      "id": "51eabef6498e10cf3aea7942",
      "name": "Brooklyn Bridge Park - Pier 2",
      "contact": {},
      "location": {
        "address": "Furman St",
        "crossStreet": "Brooklyn Bridge Park Greenway",
        "lat": 40.69957016220183,
        "lng": -73.99793274204788
      }
    }]
  }
};

let res = obj.response.venues.map((venue) => {
  let o = {};
  o.type = "feature";
  o.geometry = {
    type: "Point",
    coordinates: [venue.location.lng, venue.location.lat]
  };
  o.properties = venue;
  return o;
});
console.log(res);