替换json对象中的key最佳方案

var obj = {
    "_id": "5078c3a803ff4197dc81fbfb",
    "email": "user1@gmail.com",
    "image": "some_image_url",
    "name": "Name 1"
};

var new_key = "id";
var old_key = "_id";

obj[new_key] = obj[old_key];
delete obj[old_key];

// 修改之前的obj
{
    "_id": "5078c3a803ff4197dc81fbfb",
    "email": "user1@gmail.com",
    "image": "some_image_url",
    "name": "Name 1"
}

// 修改之后的obj 
// JSON.stringify(obj, null, "\t")
{
    "email": "user1@gmail.com",
    "image": "some_image_url",
    "name": "Name 1",
    "id": "5078c3a803ff4197dc81fbfb"
}

Object.prototype.renameProperty = function (oldName, newName) {
     // Do nothing if the names are the same
     if (oldName === newName) {
         return this;
     }
    // Check for the old property name to avoid a ReferenceError in strict mode.
    if (this.hasOwnProperty(oldName)) {
        this[newName] = this[oldName];
        delete this[oldName];
    }
    return this;
};

function renameKeys(obj, newKeys) {
  const keyValues = Object.keys(obj).map(key => {
    const newKey = newKeys[key] || key;
    return { [newKey]: obj[key] };
  });
  return Object.assign({}, ...keyValues);
}


const obj = { a: "1", b: "2" };
const newKeys = { a: "A", c: "C" };
const renamedObj = renameKeys(obj, newKeys);
console.log(renamedObj);
// {A:"1", b:"2"}

// 使用lodash的_.mapKeys()函数
var user = {
  name: "Andrew",
  id: 25,
  reported: false
};

var renamed = _.mapKeys(user, function(value, key) {
  return key + "_" + user.id;
});

console.log(renamed);

var str = JSON.stringify(object);
str = str.replace(/oldKey/g, 'newKey');
str = str.replace(/oldKey2/g, 'newKey2');

object = JSON.parse(str);

function renameObjectKey(oldObj, oldName, newName) {
    const newObj = {};

    Object.keys(oldObj).forEach(key => {
        const value = oldObj[key];

        if (key === oldName) {
            newObj[newName] = value;
        } else {
            newObj[key] = value;
        }
    });

    return newObj;
}

data = {key1: "value1", key2: "value2", key3: "value3"}; 

keyMap = {key1: "firstkey", key2: "secondkey", key3: "thirdkey"};

mappedData = Object.keys(keyMap).reduce((obj,k) => Object.assign(obj, { [keyMap[k]]: data[k] }),{});

console.log(mappedData);

var obj = {
    "automobiles" : [
        { "maker" : "Nissan", "model" : "Teana", "year" : 2011 },
        { "maker" : "Honda", "model" : "Jazz", "year" : 2010 },
        { "maker" : "Honda", "model" : "Civic", "year" : 2007 },
        { "maker" : "Toyota", "model" : "Yaris", "year" : 2008 },
        { "maker" : "Honda", "model" : "Accord", "year" : 2011 }
    ],
    "motorcycles" : [{ "maker" : "Honda", "model" : "ST1300", "year" : 2012 }]
};

var res = JSPath.apply('.automobiles{.maker === "Honda" && .year > 2009}', obj);

// res: [{ "maker" : "Honda", "model" : "Jazz", "year" : 2010 }, { "maker" : "Honda", "model" : "Accord", "year" : 2011 }]

var obj = {
    "_id": "5078c3a803ff4197dc81fbfb",
    "email": "user1@gmail.com",
    "image": "some_image_url",
    "name": "Name 1"
};

var new_key = "id";
var old_key = "_id";

Object.keys(obj).forEach(key => {
    if (key === old_key) {
        obj[new_key] = obj[key];
        delete obj[key];
    } else {
        obj[`_${key}`] = obj[key];
        delete obj[key];

        obj[`${key}`] = obj[`_${key}`];
        delete obj[`_${key}`];
    }
});