递归探索带下划线的对象并转换字段类型

Question

我正在使用一些自定义 jSON 对象。

我正在尝试探索整个对象，并更改字段类型。

例如real_id或clean_id甚至温度需要转换为整数。

为了解决这个问题，我开始制作一个非常简单的函数：

var reg = /^\d+$/;
_.each(myObject, function(val, key) {
    myObject[key] = reg.test(val) ? parseInt(val) :val;
});

我有几个需求：

它将在第一级逐一检查每个字段，但是如果 myObject 具有本身包含对象或对象数组的元素，我的 _.each 将不会探索它们。
由于正则表达式，现在它可以检测整数，并将它们转换为整数，但如果我需要转换浮点数怎么办？
如果我发现 null，我需要将其设置为 0

以我下面的例子为例，

jSON 对象的样本示例：

myObject = {
    "real_name": "Test",
    "maker": "Jean-Paul",
    "company": "",
    "real_id": "646402",
    "clean_id": "152691",
    "year": 2013,
    "type": "Red real",
    "available_for_order": 0,
    "level": null,
    "bio": null,
    "temperature": "15",
    "potential": "3",
    "country_code": "USA",
    "coord_lng": "2.7014349999999",
    "coord_lat": "42.717317",
    "real_description": [
        {
            "comment": "Real good stuff",
            "lang": "it",
            "video_end": null,
            "video_id": null,
            "video_start": null,
            "video_url": null
        },
        {
            "comment": "Awesome and cheap stuff",
            "lang": "en",
            "video_end": null,
            "video_id": null,
            "video_start": null,
            "video_url": null
        }
    ],
    "full_description": [
        {
            "description": "Long description",
            "lang": "fr"
        },
        {
            "description": "",
            "lang": "en"
        }
    ],
    "list": [
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 0,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "656732",
            "year": "1"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 0,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "330381",
            "year": "2008"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 20,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11453216",
            "year": "2010"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 0,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11497420",
            "year": "2011"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "1",
            "currency_code": "EUR",
            "price": 10,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11506715",
            "year": "2012"
        },
        {
            "available_for_order": "1",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 10,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11458207",
            "year": "2013"
        }
    ],
    "check_list": [
        "3",
        "8",
        "9",
        "10",
        "14"
    ],
    "image_src": "791330_31odFZZoM2_JqkCPJGHXa_4500x1000.jpeg"
}

非常感谢您的帮助

Answer 1

在我看来，您需要的是一个简单的递归示例，不需要 Lodash...

注意：您使用的正则表达式仅匹配以出现一个或多个数字开始和结束的字符串... 因此，您应该使用 Number 来转换值，而不是使用 parseInt 或 parseFloat！

In Javascript Number 是类型 Number 的构造函数，但是，如果在没有 new 运算符的情况下调用，则执行基本的转换。它 returns NaN 当转换不令人满意时，因此，使用或运算符我们可以保留原始值！

希望有帮助...

var myObject = {
    "real_name": "Test",
    "maker": "Jean-Paul",
    "company": "",
    "real_id": "646402",
    "clean_id": "152691",
    "year": 2013,
    "type": "Red real",
    "available_for_order": 0,
    "level": null,
    "bio": null,
    "temperature": "15",
    "potential": "3",
    "country_code": "USA",
    "coord_lng": "2.7014349999999",
    "coord_lat": "42.717317",
    "real_description": [
        {
            "comment": "Real good stuff",
            "lang": "it",
            "video_end": null,
            "video_id": null,
            "video_start": null,
            "video_url": null
        },
        {
            "comment": "Awesome and cheap stuff",
            "lang": "en",
            "video_end": null,
            "video_id": null,
            "video_start": null,
            "video_url": null
        }
    ],
    "full_description": [
        {
            "description": "Long description",
            "lang": "fr"
        },
        {
            "description": "",
            "lang": "en"
        }
    ],
    "list": [
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 0,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "656732",
            "year": "1"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 0,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "330381",
            "year": "2008"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 20,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11453216",
            "year": "2010"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 0,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11497420",
            "year": "2011"
        },
        {
            "available_for_order": "0",
            "capacity": "4500",
            "conciergerie": "1",
            "currency_code": "EUR",
            "price": 10,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11506715",
            "year": "2012"
        },
        {
            "available_for_order": "1",
            "capacity": "4500",
            "conciergerie": "0",
            "currency_code": "EUR",
            "price": 10,
            "quantity": 0,
            "retail_price": 0,
            "real_id": "11458207",
            "year": "2013"
        }
    ],
    "check_list": [
        "3",
        "8",
        "9",
        "10",
        "14"
    ],
    "image_src": "791330_31odFZZoM2_JqkCPJGHXa_4500x1000.jpeg"
};


function recurse(obj) {
  for(var key in obj) {
    if(!obj.hasOwnProperty(key)) { continue; }
    
    if('object' === typeof obj[key]) {
      recurse(obj[key]);
    } else {
      console.log(key, obj[key], typeof obj[key],  ' ==> ', typeof (Number(obj[key]) || obj[key]));
      obj[key] = Number(obj[key]) || obj[key];
    }
  
  }
}

recurse(myObject);

Answer 2

var parseObjectProperties = function (obj) {
    _.each(obj, function(val, key) {
        if (typeof(key) === 'object') {
            parseObjectProperties(key);
        } else {
            if (getType(val) === 'float') {
                myObject[key] = parseFloat(val);
            } else if (getType(val) === 'int') {
                myObject[key] = parseInt(val);
            } else if (val === null) {
                myObject[key] = 0;
            }
        }
    });
};

var getType = function(input) {
    var match = (/[\d]+(\.[\d]+)?/).exec(input);
    if (match ) {
       if (match [1]) { 
           return 'float'; 
       } else { 
           return 'int'; 
       }          
    }
    return 'string';
}

exploreObject(myObject);

递归探索带下划线的对象并转换字段类型

Explore recursively an Object with Underscore and convert field type

javascript

regex

underscore.js