从JavaScript数组中包含的对象中删除交替逗号

如何解决从JavaScript数组中包含的对象中删除交替逗号

如果我有这样的数组：

let arr = [{name: "Cool",subject_schedule: ["So","3610A","USA","1010"]},{name: "Lots",subject_schedule: ["Dog","1310A","CAN","2020"]} ];

如何做到这一点，以便将数组中每个对象的“ subject_schedule”属性组合成对，例如：

let result = [{name: "Cool",subject_schedule: ["So 3610A","USA 1010"]},subject_schedule: ["Dog 1310A","CAN 2020"]} ];

解决方法

您可以使用Array.prototype.map()方法，并且为配对subject_schedule数组使用一个简单的递归函数。 Map方法通过为数组的每个项目调用提供的函数来返回一个新数组。

const data = [
  { name: 'Cool',subject_schedule: ['So','3610A','USA','1010'] },{ name: 'Lots',subject_schedule: ['Dog','1310A','CAN','2020'] },];

const makePair = (arr,result = []) => {
  if (arr.length === 0) return result;
  result.push(arr.slice(0,2).join(' '));
  return makePair(arr.slice(2),result);
};

const ret = data.map((x) => ({
  ...x,subject_schedule: makePair(x.subject_schedule),}));
console.log(ret);