javascript - 将对象的两个位置链接到单个位置

Question

我以这种方式收到对象

const tests = [
        {id: 0, vencimiento: "231216000000"},
        {id: 0, monto: "99000"},
        {id: 1, vencimiento: "230117000000"},
        {id: 1, monto: "198000"},
        {id: 2, vencimiento: "230217000000"},
        {id: 2, monto: "297000"},
    ];

我想合并具有相同 id 的职位

const resultado= [
     {id: 0, vencimiento: "231216000000", monto: "99000"},
     {id: 1, vencimiento: "230117000000", monto: "198000"},                             
     {id: 2, vencimiento: "230217000000", monto: "297000"},
];

Answer 1

您可以使用Array.prototype.reduce()并返回一个普通对象，
然后使用 Object.values() 获得您想要的结果:

const tests = [
    {id: 0, vencimiento: "231216000000"},
    {id: 0, monto: "99000"},
    {id: 1, vencimiento: "230117000000"},
    {id: 1, monto: "198000"},
    {id: 2, vencimiento: "230217000000"},
    {id: 2, monto: "297000"},
];

const res = Object.values(tests.reduce((acc, curr) => {
  if(!acc[curr.id]) {
    acc[curr.id] = {...curr}
  } else {
    acc[curr.id] = {
      ...acc[curr.id],
      ...curr
    }
  }

  return acc;
}, {}));

console.log(res);

Array.prototype.reduce()
Object.values()