如何通过与其他对象进行比较来修改和替换对象的键？

Question

我有一个对象数组，其中包含一些 id 作为键。

const sampleObj1 = {0011:[{},{}], 0022:[{}, {}], 0033:[{},{}]}
const sampleObj2 = [{id:0011, name:'test1'}, {id:0022, name:'test2'}, {id:0033, name:'test3'}]

我想将 sampleObj1 键与 sampleObj2 id 值进行比较，然后需要创建新的对象，如下所示。

const newObjByComparing = {test1:[{},{}], test2:[{},{}], test3:[{},{}]} //desired result

我试过使用 for 循环，但无法获得所需的比较值。

const fromRdx = sampleObj2; 
const fromApi = sampleObj1; 
const keys = Object.keys(fromApi);
const newObjAfterComparision = {};

for (let i in fromRdx) {
    newObjAfterComparision[fromRdx[i]] = fromApi[keys[i]];
    fromApi[fromRdx[i]] = fromApi[keys[i]];
    delete fromApi[keys[i]];
}

console.log(newObjAfterComparision)

Answer 1

以下可能是实现所需 objective 的一种可能解决方案：

代码段

const transformObj = (obj, arr) => arr.reduce((f, i) => ({
  ...f,
  [i.name]: obj[i.id]
}), {});

const sampleObj = {
  "0011": [{}, {}],
  "0022": [{}, {}],
  "0033": [{}, {}]
};
const sampleArr = [{
  id: "0011",
  name: "test1"
}, {
  id: "0022",
  name: "test2"
}, {
  id: "0033",
  name: "test3"
}];

console.log(transformObj(sampleObj, sampleArr));

解释

使用.reduce()迭代sampleArr
为每个元素填充一个结果对象（名为 f）
对象的键将是元素的 name，值将是 sampleObj 中的值（其中键是元素的 id）

Answer 2

使用 map 和 Object.fromEntries

的另一种方法

const sampleObj1 = {'0011':[{},{}], '0022':[{}, {}], '0033':[{},{}]}
const sampleObj2 = [{id:'0011', name:'test1'}, {id:'0022', name:'test2'}, {id:'0033', name:'test3'}]


let y = Object.fromEntries(sampleObj2.map(({id,name}) => [name,sampleObj1[id]]))

console.log(y)

Answer 3

我有一个简单的解决方案给你

const sampleObj1 = {0011:[{},{}], 0022:[{}, {}], 0033:[{},{}]}
const sampleObj2 = [{id:0011, name:'test1'}, {id:0022, name:'test2'}, {id:0033, name:'test3'}]

const keys = Object.keys(sampleObj1);
const newObjByComparing = sampleObj2.reduce((acc, cur, index) => {
    acc[cur.name] = sampleObj1[keys[index]];
    return acc;
}, {});

如何通过与其他对象进行比较来修改和替换对象的键？

How to modify & replace the key an object by comparing it with other objects?

javascript

node.js

ecmascript-6

reactjs