使用 javascript 重构 json 对象

Question

我有这个对象：

[
    {
        "_token": "lRM32nH7KAnt2xdDkUJBJYniNnANJVhG20BGnjHE",
        "academic[2][id]": "-1",
        "title[2][name]": "Test Title",
        "from_date[2]": "2021-05-16",
        "to_date[2]": "2021-05-17",
        "institute[2]": "Titletest title test title ",
        "title[3][name]": "Test TitleTest Title",
        "from_date[3]": "2021-05-17",
        "to_date[3]": "2021-05-18",
        "institute[3]": "test title test title test title test title "
    }
]

我想将其重组为：

[
  {"title": "Test Title", "from_date": "2021-05-17", "to_date": "2021-05-18","institute":"Title"},
  {"title": "Test TitleTest Title", "from_date": "2021-05-17", "to_date": "2021-05-18","institute":"Title"},
  {"title": "Test Title", "from_date": "2021-05-17", "to_date": "2021-05-18","institute":"Title"},
]

如何使用 javascript 做到这一点？或任何使用 javascript 的简单方法？

编辑： 到目前为止我所做的是：

 const data = new FormData(document.querySelector('#academic-form'));
 const result = [Object.fromEntries(data.entries())][0];

 const academics = [];
 for(var key in result){
   // console.log('key: ' + key);
   console.log('title: ' + result[key]);
   console.log(result[i]);
   academics.push({
       //push values in academics array. 
   });
    
 }

Answer 1

假设您按对象键中的数字进行分组*，您可以使用正则表达式将对象键分解为标签和数字，并在对象键/值对上使用 reduce 创建新对象使用该数字作为新密钥。然后，您可以使用 Object.values 从该对象创建一个数组。

*请注意，此输出仅生成两个对象，而不是预期输出中指示的三个对象。

const arr = [{
  "_token": "lRM32nH7KAnt2xdDkUJBJYniNnANJVhG20BGnjHE",
  "academic[2][id]": "-1",
  "title[2][name]": "Test Title",
  "from_date[2]": "202 1-05-16",
  "to_date[2]": "2021-05-17",
  "institute[2]": "Titletest title test title ",
  "title[3][name]": "Test TitleTest Title",
  "from_date[3]": "2021-05-17",
  "to_date[3]": "2021-05-18",
  "institute[3]": "test title test title test title test title "
}];

const regex = /(title|from_date|to_date|institute)(\[\d\])/;

// Iterate over the object grabbing the key and value
const out = Object.entries(arr[0]).reduce((acc, [key, value]) => {

  // Create a match array using the regex on the key
  const match = key.match(regex);

  // If there is a match...
  if (match) {

    // Use the number in the match to create a new
    // key on the accumulator object if it doesn't exist,
    // and set it to an empty object
    acc[match[2]] = acc[match[2]] || {};

    // Now assign a value to the property in that object
    // identified by the match (title, to_date etc)
    acc[match[2]][match[1]] = value;
  }

  // Return the accumulated object for the next iteration
  return acc;
}, {});

console.log(Object.values(out));