使用对象解构

Const省略=(道具，{[道具]:_，…Rest}) => Rest; Const obj = {a: 1, b: 2, c: 3}; const objWithoutA =省略('a'， obj); console.log (objWithoutA);// {b: 2, c: 3}

var clone = Object.assign({}, {a: 1, b: 2, c: 3});
delete clone.b;

或者如果你接受属性为未定义:

var clone = Object.assign({}, {a: 1, b: 2, c: 3}, {b: undefined});

嘿，当你试图复制一个对象然后删除一个属性时，你似乎遇到了引用问题。你必须在某个地方分配基本变量，这样javascript就会生成一个新值。

我使用的一个简单的技巧(可能很可怕)是这样的

var obj = {"key1":"value1","key2":"value2","key3":"value3"};

// assign it as a new variable for javascript to cache
var copy = JSON.stringify(obj);
// reconstitute as an object
copy = JSON.parse(copy);
// now you can safely run delete on the copy with completely new values
delete copy.key2

console.log(obj)
// output: {key1: "value1", key2: "value2", key3: "value3"}
console.log(copy)
// output: {key1: "value1", key3: "value3"}

我不知道你到底想用这个做什么，所以我不确定这是否适合你，但我只是做了以下工作，它适用于我的用例:

const newObj ={...obj, [key]: undefined}

const x = {obj1: 1, pass: 2, obj2: 3, obj3:26};

const objectWithoutKey = (object, key) => {
  const {[key]: deletedKey, ...otherKeys} = object;
  return otherKeys;
}

console.log(objectWithoutKey(x, 'pass'));

我用的是ESNext one liner

Const obj = {a: 1, b: 2, c: 3, d: 4} Const clone = (({b, c，…O}) => O)(obj) //删除b和c console.log(克隆)