循环自动排样

Question

我有一个包含对象的数组，这些对象由一些数组组成。我想循环遍历整个数组和对象内部的数组。听起来很复杂，但是如果你看下面的例子，它是有效的。然而，我的问题是，现在变量数组的长度是2，但是如果数组长度为4而不硬编码，那么如何实现循环中的这种循环类型，因为我将从变量上变化很大的api中获得数据。

let wantedArray =[]
let array = [
  { gender: male, value: 10, age: 5,countryofbirth:"Norway" },
  { gender: female, value: 10, age: 2,countryofbirth:"Sweden" },
{ gender: male, value: 15, age: 3,countryofbirth:"Norway" },
{ gender: male, value: 11, age: 4,countryofbirth:"Norway" },
{ gender: female, value: 10, age: 2,countryofbirth:"Finland" },
  ...
]
let variables = [
  { id: gender, options: [male, female] },
  { id: "countryofbirth",  options: ["Norway", "Sweden", "Denmark", "Finland"]}
]
variables[0].options.map((item) => {
  variables[1].options.map((item2) => {
    let currArray = array.filter((currData) =>
      currData[variables[0].id] === item &&
      currData[variables[1].id] === item2);

//lets say that it have come to the point in the loop where item===male and item2==="Norway"

    let currObject ={variables[0].id:item//"Male",
variables[1].id:item2}//"Norway"
let currValues ={}
    currArray.map((data)=>{
    currValues[data.age]=value
})
currObject["values"]=currValues
wantedArray.push(currObject)
/*This means when item===male and item2==="Norway" the function would push {
gender:"Male",
countryofbirth:"Norway,
values:{5:10,3:15,4:11}
} to wantedArray*/
  })
})

Answer 1

我想你可能是在找

const data = [
  {gender: "male", value: 10, age: 5, countryofbirth: 'Norway'},
  {gender: "female", value: 10, age: 2, countryofbirth: 'Sweden'},
  {gender: "male", value: 15, age: 3, countryofbirth: 'Norway'},
  {gender: "male", value: 11, age: 4, countryofbirth: 'Norway'},
  {gender: "female", value: 10, age: 2, countryofbirth: 'Finland'},
]

// These are all dynamic.
const filter = {gender: "male", countryofbirth: 'Norway'};
const valueKey = 'age';
const valueValue = 'value';

// Find objects with key/values matching all of those in `filter`.
const matching = data.filter((item) => Object.entries(filter).every(([key, value]) => item[key] === value));
console.log(matching);

// Generate a mapping from the found objects using the `valueKey` and `valueValue` variables.
const values = Object.fromEntries(matching.map((item) => [item[valueKey], item[valueValue]]));

// Merge the filter and the values to get the desired result.
console.log({...filter, values});

终于打印出来了

{
  gender: 'male',
  countryofbirth: 'Norway',
  values: { '3': 15, '4': 11, '5': 10 }
}