const arr = {
    name: '小王',
    id: 1,
    age: 18        
  } 
// 剔除age
delete arr.age    
console.log(arr)    
// 结果：{ id: 1, name: '小王' }

const arr = {
    name: '小王',
    id: 1,
    age: 18        
  } 
// 剔除age
const  {age, ...arr2} = arr
console.log(arr2)  
// 结果：{  id:1 , name: '小王' }

const arr = {
    name: '小王',
    id: 1,
    age: 18        
  } 
// 剔除age
const arr2 = { ...arr2，age:""} 
console.log(arr2)  
// 结果：{  name: '小王' ,id:1 , age: ""}