根据数组的某一个属性过滤。找到符合条件的对象。

let arr1 = [1, 2]
let arr2 = [
  {
    name:'zhangsan',
    age: 1
  },
  {
    name:'lisi',
    age: 2
  },
  {
    name:'wangwu',
    age: 3
  },
]
let newArr = arr2.filter(item => arr1.includes(item.age))
console.log(newArr)