假设我有一个对象:

{
  item1: { key: 'sdfd', value:'sdfd' },
  item2: { key: 'sdfd', value:'sdfd' },
  item3: { key: 'sdfd', value:'sdfd' }
}

我想通过过滤上面的对象来创建另一个对象这样我就有了。

 {
    item1: { key: 'sdfd', value:'sdfd' },
    item3: { key: 'sdfd', value:'sdfd' }
 }

我正在寻找一种干净的方法来实现这一点使用Es6,所以扩散操作符是可用的。


当前回答

下面的方法获取要过滤的对象和任何属性。

函数removeObjectKeys(obj,…keysToRemove) { let mObject ={…obj} for (let key of keysToRemove) { const{[字符串(键)]:_,…rest} = mObject mObject ={…休息} } 返回mObject } Const obj = {123: "hello", 345: "world", 567: "and kitty"}; const filtered = removeObjectKeys(obj, 123); console.log(过滤); const twoFiltered = removeObjectKeys(obj, 345,567); console.log (twoFiltered);

其他回答

基于以下两个答案:

https://stackoverflow.com/a/56081419/13819049 https://stackoverflow.com/a/54976713/13819049

我们可以:

const original = { a: 1, b: 2, c: 3 };
const allowed = ['a', 'b'];

const filtered = Object.fromEntries(allowed.map(k => [k, original[k]]));

哪个更干净更快:

https://jsbench.me/swkv2cbgkd/1

简单的方法!这样做。

const myData = { Item1: {key: 'sdfd', value:'sdfd'}, Item2: {key: 'sdfd', value:'sdfd'}, Item3:{键:'sdfd',值:'sdfd'} }; const {item1, item3} = myData Const result =({item1,item3})

好吧,这一行怎么样

    const raw = {
      item1: { key: 'sdfd', value: 'sdfd' },
      item2: { key: 'sdfd', value: 'sdfd' },
      item3: { key: 'sdfd', value: 'sdfd' }
    };

    const filteredKeys = ['item1', 'item3'];

    const filtered = Object.assign({}, ...filteredKeys.map(key=> ({[key]:raw[key]})));

我最近是这样做的:

const dummyObj = Object.assign({}, obj);
delete dummyObj[key];
const target = Object.assign({}, {...dummyObj});

你现在可以使用Object.fromEntries方法(检查浏览器支持)使它更短更简单:

const raw = { item1: { prop:'1' }, item2: { prop:'2' }, item3: { prop:'3' } };

const allowed = ['item1', 'item3'];

const filtered = Object.fromEntries(
   Object.entries(raw).filter(
      ([key, val])=>allowed.includes(key)
   )
);

阅读更多信息:Object.fromEntries