javascript - 在数组中的对象中映射对象

Question

我有一个数组，其中包含一个对象，其中包含我想映射到更简单结构的更多对象。

我尝试了以下内容，它似乎循环遍历对象并为每个循环返回一个没有数据的对象。

Object.values(data).forEach((a) => {
  console.log({
    managingRole: a.id === 110 ? a.answer : null,
    advice: a.id === 112 ? a.answer : null,
  });
});

最终目标是返回一个对象数组来映射:

const desired = [{
  managingRole: 'spending',
  advice: 'everyone'
},
{
  managingRole: 'saving',
  advice: 'no one'
}];

我使用的数据如下:

const data = [{
  '110':
  {
    id: 110,
    type: 'RADIO',
    question: '<strong>My main role in managing my money is:</strong>',
    section_id: 9,
    answer: 'spending'
  },
  '111':
  {
    id: 111,
    type: 'RADIO',
    question: '<strong>When it comes to financial matters, I most agree with which statement?</strong>',
    section_id: 9,
    answer: 'spend it'
  },
  '112':
  {
    id: 112,
    type: 'RADIO',
    question: '<strong>When deciding on an investment, I trust the advice of :</strong>',
    section_id: 9,
    answer: 'everyone'
  }
 },
 {
  '110':
  {
    id: 110,
    type: 'RADIO',
    question: '<strong>My main role in managing my money is:</strong>',
    section_id: 9,
    answer: 'saving'
  },
  '111':
  {
    id: 111,
    type: 'RADIO',
    question: '<strong>When it comes to financial matters, I most agree with which statement?</strong>',
    section_id: 9,
    answer: 'save it'
   },
  '112':
  {
    id: 112,
    type: 'RADIO',
    question: '<strong>When deciding on an investment, I trust the advice of :</strong>',
    section_id: 9,
    answer: 'no one'
  }
}];

Answer 1

您可以使用给定的 id 直接寻址对象，这与具有所需 answer 的对象的键相同。

const
    data = [{ 110: { id: 110, type: 'RADIO', question: '<strong>My main role in managing my money is:</strong>', section_id: 9, answer: 'spending' }, 111: { id: 111, type: 'RADIO', question: '<strong>When it comes to financial matters, I most agree with which statement?</strong>', section_id: 9, answer: 'spend it' }, 112: { id: 112, type: 'RADIO', question: '<strong>When deciding on an investment, I trust the advice of :</strong>', section_id: 9, answer: 'everyone' } }, { 110: { id: 110, type: 'RADIO', question: '<strong>My main role in managing my money is:</strong>', section_id: 9, answer: 'saving' }, 111: { id: 111, type: 'RADIO', question: '<strong>When it comes to financial matters, I most agree with which statement?</strong>', section_id: 9, answer: 'save it' }, 112: { id: 112, type: 'RADIO', question: '<strong>When deciding on an investment, I trust the advice of :</strong>', section_id: 9, answer: 'no one' } }],
    result = data.map(o => ({
        managingRole: o['110'].answer || null,
        advice: o['112'].answer || null
    }));

console.log(result);

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