需求

数组：a = [
    { id: 1, name: 'a' },
    { id: 2, name: 'b' },
    { id: 3, name: 'c' }
]
数组：b = [
    { id: 1, name: 'a' },
    { id: 3, name: 'c' }
]
目的数组：
[
  { id: 2, name: 'b' }
]

实现

let arr = a.filter(item => !b.some(v => v.id  === item.id ))
console.log(arr)