合并2个对象数组,从一个设置键,从另一个设置值

Question

我有2个objets a并b定义如下:

a = {
  1:3,
  2:5,
  3:1,
}

b = {
  1:{name:"Bob"},
  2:{name:"John"},
  3:{name:"Alice"}
}

我想要得到的是以下对象c定义为

c = {
  "Bob":3,
  "John":5,
  "Alice":1
}

因此,使用b [key] .name作为c [key]和[key]作为值.

到目前为止我尝试过的是

const mapAandB = (a, b) => {
  let finalObject = [];
  Object.keys(b).forEach(key => {
    return finalOdds.push({ [b[key].name]: a[key] });
  });
  return finalOdds;
};

但结果却是

c = [
  0:{Bob:3}, 
  1:{John: 5}, 
  2:{Alice:1}
]

如果您有任何建议......

Answer 1

您可以使用Array#reduce将名称和值收集到对象中:

const a = {"1":3,"2":5,"3":1}

const b = {"1":{"name":"Bob"},"2":{"name":"John"},"3":{"name":"Alice"}}

const result = Object.keys(a).reduce((r, key) => {
  r[b[key].name] = a[key];
  
  return r;
}, {});

console.log(result);

或者您可以使用Array#map创建一系列对象,并使用Object#assign和spread将它们组合成一个对象:

const a = {"1":3,"2":5,"3":1}

const b = {"1":{"name":"Bob"},"2":{"name":"John"},"3":{"name":"Alice"}}

const result = Object.assign(...Object.keys(a).map((key) => ({ [b[key].name]: a[key] })));

console.log(result);