javascript - 根据另一个数组对对象数组进行排序

Question

我有一系列品牌如下:

const makes = [
{id: "4", name: "Audi"},
{id: "5", name: "Bmw"},
{id: "6", name: "Porsche"},
{id: "31", name: "Seat"},
{id: "32", name: "Skoda"},
{id: "36", name: "Toyota"},
{id: "38", name: "Volkswagen"}
]

我想根据另一个数组对该数组进行排序:

const preferred_makes = ['Volkswagen', 'Audi'];

我现在做的事情如下:

const preferred_makes = ['Volkswagen', 'Audi'];

const makes = [
{id: "4", name: "Audi"},
{id: "5", name: "Bmw"},
{id: "6", name: "Porsche"},
{id: "31", name: "Seat"},
{id: "32", name: "Skoda"},
{id: "36", name: "Toyota"},
{id: "38", name: "Volkswagen"}
]

const mainMakes = []
const otherMakes = []

makes.map(make => _.includes(preferred_makes, make.name) ? mainMakes.push(make) : otherMakes.push(make))

console.log(mainMakes)
console.log(otherMakes)

但是还有更好的办法吗？我可以对 makes 进行排序以将这些 preferred_makes 显示为数组的第一个元素吗？

Here is the fiddle.

Answer 1

常规array.sort()使用自定义比较函数应该能够做到这一点。

const preferred_makes = ['Volkswagen', 'Audi'];

const makes = [
  {id: "4", name: "Audi"},
  {id: "5", name: "Bmw"},
  {id: "6", name: "Porsche"},
  {id: "31", name: "Seat"},
  {id: "32", name: "Skoda"},
  {id: "36", name: "Toyota"},
  {id: "38", name: "Volkswagen"}
]

const sorted = makes.slice().sort((a, b) => {
  // Convert true and false to 1 and 0
  const aPreferred = new Number(preferred_makes.includes(a.name))
  const bPreferred = new Number(preferred_makes.includes(b.name))
  
  // Return 1, 0, or -1
  return bPreferred - aPreferred
})

console.log(sorted)