javascript - 如何按值查找多个数组元素？

Question

我需要选择多个具有相同值的数组元素。 使用array.find()仅返回满足查询条件的第一个元素。 下面的结构在控制台中仅显示“Donald Trump”:

const data = [
  {
    "position": "president",
    "name": "Donald Trump",
    "language": "english"
  },
  {
    "position": "president",
    "name": "Vladimir Putin",
    "language": "russian"
  },
  {
    "position": "king",
    "name": "Shutruk-Nahhunte",
    "language": "elamite"
  },
];
let result = data.find(elem => elem.position == "president");
console.log(result.name);

但是我需要将所有值作为数组获取， - 像这样:

[
  "Donald Trump",
  "Vladimir Putin"
]

如何正确地做到这一点，同时考虑到实际数组是巨大的。 感谢您的帮助!

Answer 1

我使用过滤器来完成此任务

const data = [
  {
    "position": "president",
    "name": "Donald Trump",
    "language": "english"
  },
  {
    "position": "president",
    "name": "Vladimir Putin",
    "language": "russian"
  },
  {
    "position": "king",
    "name": "Shutruk-Nahhunte",
    "language": "elamite"
  },
];

const newArray= data.filter(x=>x.position==='president')
let nameArray=newArray.map(x=>x.name)
console.log(nameArray)