从键数组中查找对象数组

Question

我有一个对象数组

let objList = [
 {
  id:10,
  ...
 },

 {
  id: 12,
  ...
 },

 {
  id: 13,
  ...
 },

 ...
];

我想过滤掉所有ID在另一个数组中的对象

let keyList = [10, 13];

Expected output:

[
 {
  id: 10,
  ...
  },

 {
  id: 13,
  ...
 }
]

注意：

The req. is in an Angular 7 application and I use Lodash library as well.

我试过：

objList.filter(eachObj => keysList.forEach(
          eachID => {
            eachID == eachObj['id']
          }
        ))

和

find(ObjList, eachObj => {

          return eachObj['id'] === keysList.map(eachID => {
            return eachID;
          })
        })

Answer 1

您可以使用过滤器：

objList = objList.filter(element => keyList.indexOf(element.id) > -1);

Answer 2

你没有得到想要的结果，因为你没有从你的数组中得到 id 字段。所以尝试使用 includes 方法并得到 id 属性:

const filteredArray = objList.filter(o => keyList.includes(o.id));
console.log(filteredArray);

Answer 3

使用_.differenceWith()比较id和key，并删除两个数组中都存在的项目：

const objList = [{ id: 10 }, { id: 12 }, { id: 13 }];
const keyList = [10, 13];

const result = _.differenceWith(objList, keyList, ({ id }, key) => id === key);

console.log(result);

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.13/lodash.js"></script>

从键数组中查找对象数组

Find array of objects from keys array

javascript

typescript

underscore.js

lodash