如何处理这个JSON数组以删除数组中每个元素中的包装器对象？使用JavaScript

我不太喜欢JavaScript，我有以下问题

我有一个类似以下内容的JSON文档：

{
  "forecast": [
    {
      "day-1": {
        "forecast_date": "2017-11-23",
        "morning": {
          "weather": {
            "meteo_forecast_id": 19,
            "meteo_forecast_date_time": "2017-11-23 06:00:00",
            "meteo_forecast_description_id": 2,
            "min_temp": 26,
            "max_temp": 31,
            "meteo_forecast_description_name": "Light Rain",
            "meteo_forecast_description": "Light Rain",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Light_Rain.png"
          }
        },
        "afternoon": {
          "weather": {
            "meteo_forecast_id": 20,
            "meteo_forecast_date_time": "2017-11-23 12:00:00",
            "meteo_forecast_description_id": 1,
            "min_temp": 33,
            "max_temp": 27,
            "meteo_forecast_description_name": "Mostly Cloudy",
            "meteo_forecast_description": "Mostly Cloudy",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Mostly_Cloudy_Icon.png"
          }
        }
      }
    },
    {
      "day-2": {
        "forecast_date": "2017-11-24",
        "morning": {
          "weather": {
            "meteo_forecast_id": 22,
            "meteo_forecast_date_time": "2017-11-24 06:00:00",
            "meteo_forecast_description_id": 2,
            "min_temp": 30,
            "max_temp": 34,
            "meteo_forecast_description_name": "Light Rain",
            "meteo_forecast_description": "Light Rain",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Light_Rain.png"
          }
        },
        "afternoon": {
          "weather": {
            "meteo_forecast_id": 23,
            "meteo_forecast_date_time": "2017-11-24 12:00:00",
            "meteo_forecast_description_id": 2,
            "min_temp": 34,
            "max_temp": 31,
            "meteo_forecast_description_name": "Light Rain",
            "meteo_forecast_description": "Light Rain",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Light_Rain.png"
          }
        }
      }
    }
}

{
    "forecast": [
        {
            "forecast_date": "2017-11-23",
            "morning": {
                "weather": {
                    "meteo_forecast_id": 19,
                    "meteo_forecast_date_time": "2017-11-23 06:00:00",
                    "meteo_forecast_description_id": 2,
                    "min_temp": 26,
                    "max_temp": 31,
                    "meteo_forecast_description_name": "Light Rain",
                    "meteo_forecast_description": "Light Rain",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Light_Rain.png"
                }
            },
            "afternoon": {
                "weather": {
                    "meteo_forecast_id": 20,
                    "meteo_forecast_date_time": "2017-11-23 12:00:00",
                    "meteo_forecast_description_id": 1,
                    "min_temp": 33,
                    "max_temp": 27,
                    "meteo_forecast_description_name": "Mostly Cloudy",
                    "meteo_forecast_description": "Mostly Cloudy",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Mostly_Cloudy_Icon.png"
                }
            }
        },
        {
            "forecast_date": "2017-11-24",
            "morning": {
                "weather": {
                    "meteo_forecast_id": 22,
                    "meteo_forecast_date_time": "2017-11-24 06:00:00",
                    "meteo_forecast_description_id": 2,
                    "min_temp": 30,
                    "max_temp": 34,
                    "meteo_forecast_description_name": "Light Rain",
                    "meteo_forecast_description": "Light Rain",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Light_Rain.png"
                }
            },
            "afternoon": {
                "weather": {
                    "meteo_forecast_id": 23,
                    "meteo_forecast_date_time": "2017-11-24 12:00:00",
                    "meteo_forecast_description_id": 2,
                    "min_temp": 34,
                    "max_temp": 31,
                    "meteo_forecast_description_name": "Light Rain",
                    "meteo_forecast_description": "Light Rain",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Light_Rain.png"
                }
            }
        }
    ]
}

如您所见，有一个名为forecast的数组，其中包含一些对象{}，而该对象又包含一个“day-X”：{…}对象，其中包含一些其他字段

好的，我的问题是：我必须删除这些day-X对象，并将内容直接放在主{}对象中

因此，从前面的数组开始，我必须获得如下内容：

{
  "forecast": [
    {
      "day-1": {
        "forecast_date": "2017-11-23",
        "morning": {
          "weather": {
            "meteo_forecast_id": 19,
            "meteo_forecast_date_time": "2017-11-23 06:00:00",
            "meteo_forecast_description_id": 2,
            "min_temp": 26,
            "max_temp": 31,
            "meteo_forecast_description_name": "Light Rain",
            "meteo_forecast_description": "Light Rain",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Light_Rain.png"
          }
        },
        "afternoon": {
          "weather": {
            "meteo_forecast_id": 20,
            "meteo_forecast_date_time": "2017-11-23 12:00:00",
            "meteo_forecast_description_id": 1,
            "min_temp": 33,
            "max_temp": 27,
            "meteo_forecast_description_name": "Mostly Cloudy",
            "meteo_forecast_description": "Mostly Cloudy",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Mostly_Cloudy_Icon.png"
          }
        }
      }
    },
    {
      "day-2": {
        "forecast_date": "2017-11-24",
        "morning": {
          "weather": {
            "meteo_forecast_id": 22,
            "meteo_forecast_date_time": "2017-11-24 06:00:00",
            "meteo_forecast_description_id": 2,
            "min_temp": 30,
            "max_temp": 34,
            "meteo_forecast_description_name": "Light Rain",
            "meteo_forecast_description": "Light Rain",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Light_Rain.png"
          }
        },
        "afternoon": {
          "weather": {
            "meteo_forecast_id": 23,
            "meteo_forecast_date_time": "2017-11-24 12:00:00",
            "meteo_forecast_description_id": 2,
            "min_temp": 34,
            "max_temp": 31,
            "meteo_forecast_description_name": "Light Rain",
            "meteo_forecast_description": "Light Rain",
            "meteo_forecast_description_audio_link": "audio_link.html",
            "icon_link": "Light_Rain.png"
          }
        }
      }
    }
}

{
    "forecast": [
        {
            "forecast_date": "2017-11-23",
            "morning": {
                "weather": {
                    "meteo_forecast_id": 19,
                    "meteo_forecast_date_time": "2017-11-23 06:00:00",
                    "meteo_forecast_description_id": 2,
                    "min_temp": 26,
                    "max_temp": 31,
                    "meteo_forecast_description_name": "Light Rain",
                    "meteo_forecast_description": "Light Rain",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Light_Rain.png"
                }
            },
            "afternoon": {
                "weather": {
                    "meteo_forecast_id": 20,
                    "meteo_forecast_date_time": "2017-11-23 12:00:00",
                    "meteo_forecast_description_id": 1,
                    "min_temp": 33,
                    "max_temp": 27,
                    "meteo_forecast_description_name": "Mostly Cloudy",
                    "meteo_forecast_description": "Mostly Cloudy",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Mostly_Cloudy_Icon.png"
                }
            }
        },
        {
            "forecast_date": "2017-11-24",
            "morning": {
                "weather": {
                    "meteo_forecast_id": 22,
                    "meteo_forecast_date_time": "2017-11-24 06:00:00",
                    "meteo_forecast_description_id": 2,
                    "min_temp": 30,
                    "max_temp": 34,
                    "meteo_forecast_description_name": "Light Rain",
                    "meteo_forecast_description": "Light Rain",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Light_Rain.png"
                }
            },
            "afternoon": {
                "weather": {
                    "meteo_forecast_id": 23,
                    "meteo_forecast_date_time": "2017-11-24 12:00:00",
                    "meteo_forecast_description_id": 2,
                    "min_temp": 34,
                    "max_temp": 31,
                    "meteo_forecast_description_name": "Light Rain",
                    "meteo_forecast_description": "Light Rain",
                    "meteo_forecast_description_audio_link": "audio_link.html",
                    "icon_link": "Light_Rain.png"
                }
            }
        }
    ]
}

---

什么是明智的做法？从原始的forecast数组开始，如何删除day-x包装对象并将其内容保存到该数组的{…}对象元素中？我必须在纯JavaScript中完成，并且我不能使用第三部分库或框架

使用

映射

迭代并使用

对象返回数组中每个项的第一个值

obj.forecast = obj.forecast.map( s => Object.values(s)[0] )

演示


var obj={
“预测”：[
{
“第一天”：{
“预测日期”：“2017-11-23”，
“上午”：{
“天气”：{
“气象预报id”：19，
“气象预报日期时间”：“2017-11-23 06:00:00”，
“气象预报描述id”：2，
“最低温度”：26，
“最高温度”：31，
“气象预报描述名称”：“小雨”，
“气象预报描述”：“小雨”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“图标链接”：“Light\u Rain.png”
}
},
“下午”：{
“天气”：{
“气象预报id”：20，
“气象预测日期时间”：“2017-11-23 12:00:00”，
“气象预报描述id”：1，
“最低温度”：33，
“最高温度”：27，
“气象预报描述名称”：“多云”，
“气象预报描述”：“多云”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“icon\u link”：“icon.png”
}
}
}
},
{
“第二天”：{
“预测日期”：“2017-11-24”，
“上午”：{
“天气”：{
“气象预报id”：22，
“气象预测日期时间”：“2017-11-24 06:00:00”，
“气象预报描述id”：2，
“最低温度”：30，
“最高温度”：34，
“气象预报描述名称”：“小雨”，
“气象预报描述”：“小雨”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“图标链接”：“Light\u Rain.png”
}
},
“下午”：{
“天气”：{
“气象预报id”：23，
“气象预测日期时间”：“2017-11-24 12:00:00”，
“气象预报描述id”：2，
“最低温度”：34，
“最高温度”：31，
“气象预报描述名称”：“小雨”，
“气象预报描述”：“小雨”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“图标链接”：“Light\u Rain.png”
}
}
}
}
]
};
obj.forecast=obj.forecast.map（s=>Object.values[0]）；
控制台日志（obj）
使用
map
迭代并使用
Object.values从数组中的每个项返回第一个值

obj.forecast = obj.forecast.map( s => Object.values(s)[0] )

演示


var obj={
“预测”：[
{
“第一天”：{
“预测日期”：“2017-11-23”，
“上午”：{
“天气”：{
“气象预报id”：19，
“气象预报日期时间”：“2017-11-23 06:00:00”，
“气象预报描述id”：2，
“最低温度”：26，
“最高温度”：31，
“气象预报描述名称”：“小雨”，
“气象预报描述”：“小雨”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“图标链接”：“Light\u Rain.png”
}
},
“下午”：{
“天气”：{
“气象预报id”：20，
“气象预测日期时间”：“2017-11-23 12:00:00”，
“气象预报描述id”：1，
“最低温度”：33，
“最高温度”：27，
“气象预报描述名称”：“多云”，
“气象预报描述”：“多云”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“icon\u link”：“icon.png”
}
}
}
},
{
“第二天”：{
“预测日期”：“2017-11-24”，
“上午”：{
“天气”：{
“气象预报id”：22，
“气象预测日期时间”：“2017-11-24 06:00:00”，
“气象预报描述id”：2，
“最低温度”：30，
“最高温度”：34，
“气象预报描述名称”：“小雨”，
“气象预报描述”：“小雨”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“图标链接”：“Light\u Rain.png”
}
},
“下午”：{
“天气”：{
“气象预报id”：23，
“气象预测日期时间”：“2017-11-24 12:00:00”，
“气象预报描述id”：2，
“最低温度”：34，
“最高温度”：31，
“气象预报描述名称”：“小雨”，
“气象预报描述”：“小雨”，
“meteo_forecast_description_audio_link”：“audio_link.html”，
“图标链接”：“Light\u Rain.png”
}
}
}
}
]
};
obj.forecast=obj.forecast.map（s=>Object.values[0]）；
控制台日志（obj）假设您需要先读取文件：

const fs = require('fs');

fs.readFile('/path/to/file.json', (err, file) => {
  const document = JSON.parse(file);
  document.forecast = document.forecast.map((days) => {
    return Object.keys(days).reduce((day, key) => days[key], {});
  });
  // console.log(document) or do what you want.
}

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