javascript - 如何转换对象数组？

Question

我有一个问题。

我有对象数组:

const iHaveThis = [{
    question: "What's your name?",
    answer: 'dda',
    form_filled_key: 15,
  },
  {
    question: "What's your e-mail?",
    answer: 'sda@br.com',
    form_filled_key: 15,
  },
  {
    question: "What's your e-mail?",
    answer: 'dAS@be.bimc',
    form_filled_key: 14,
  },
  {
    question: "What's your name?",
    answer: 'DAS',
    form_filled_key: 14,
  },
];

我想将其转换为:

const iWillHaveThis = [{
    "What's your e-mail?": 'sda@br.com',
    "What's your name?": 'dda',
  },

  {
    "What's your e-mail?": 'dAS@be.bimc',
    "What's your name?": 'DAS',
  },
];

我该怎么做？请

我已经尝试使用 reduce 和 map 但没有用。

Answer 1

您可以将一个对象键入您的 form_filled_key。并在循环中使用键将对象添加到对象以对它们进行分组。最后，您的解决方案将在您构建的对象的 Object.values() 中:

const iHaveThat = [
  {question: "What's your name?",answer: 'dda',form_filled_key: 15,},
  {question: "What's your e-mail?",answer: 'sda@br.com',form_filled_key: 15,},
  {question: "What's your e-mail?",answer: 'dAS@be.bimc',form_filled_key: 14,},
  {question: "What's your name?",answer: 'DAS',form_filled_key: 14,},];

let arr = iHaveThat.reduce((obj, {form_filled_key, question, answer}) => {

    // make a new entry if needed
    if (!obj[form_filled_key]) obj[form_filled_key] = {}

    // add the key value pair
    obj[form_filled_key][question] = answer

    return obj
},{})

// you just want the array from `values()`
let result = Object.values(arr)
console.log(result)