SOURCE

let arr =[
    {
        id:001,
        name:"aaa",
        age:13
    },
     {
        id:002,
        name:"bbb",
        age:14
    },
     {
        id:003,
        name:"ccc",
        age:15
    }
]
let arr2 =[
    {
        id:001,
        name:"ddd",
        age:16
    },
     {
        id:004,
        name:"eee",
        age:17
    },
     {
        id:005,
        name:"fff",
        age:18
    }
]
let arr3=[]
arr2.forEach(item=>{
    if(arr.every(x=>x.id!=item.id)){
    arr3.push(item)
     // console.log(item)
    }
        
})
let newarr  = [...arr,...arr3]

//console.log(newarr)
let aee=[]
let  aww=[]
aww = arr2.map(item=> {  return  item.id})
console.log(aww)
aee =  arr.filter(x=>{
     return ! aww.includes(x.id)
  }) 

console.log(aee)