SE 6配列要素またはオブジェクト要素を削除します.

let arr = [
    {name:'  ',id:21111},
    {name:'   ',id:1111},
    {name:'   ',id:3222}
  ]
arr.splice(arr.findIndex(item => item.id === 3222), 1)

arr.filter(obj=>obj.id!==3222)

let arr = {
    name: '  ',
    id: 1111,
    age: 24
};

  1：

const personUnkonwAge = (({name, id}) => ({name,id}))(arr)
console.log(personUnkonwAge)
console.log(arr)

   ：

let {name, ...personUnknowName} = arr
console.log(personUnknowName)