Question

对象：

const item = {id:1}

功能：

 // get is function, it can be _id or something else
    const getId = (item) => item.id
    const doSomthing = (obj, getId ) =>{
        // here i wont to delete id from obj. 
    }

那么，有删除ID键的选项吗？

delete getId(item)

Here是我不会做的例子，所以有什么方法可以做到这一点？

Answer 1

const item = {id:1, name: 'Joe', age: 23}
const item2 = {id:2}

const removeProp = (item, key) => {
  key instanceof Array ?
    key.forEach(k => delete item[k]) :
    delete item[key]

  return item;
}

const deleteIdES7 = ({ id, ...rest }) => rest;

const deleteId = (item) => removeProp(item, 'id')

console.log('id deleted', deleteId(item))
console.log('id deleted es7', deleteIdES7(item2))
console.log('strip the rest', removeProp(item, ['age', 'name']))

如何按功能删除键

1 个答案: