如何通过对象键名从对象数组中删除对象？

Question

I want to be able to remove an object from this object array individually by its key name. So if I wanted to remove item1 I would call a function or something similar and it would remove it completely.

var list = [{item1: 'Foo'}, {item2: 'Bar'}];

removeObjectByKeyName(item1);

I expect the object array after deletion to be [{item2: 'Bar'}]

Any help is appreciated. Thanks!

Answer 1

One option is using filter to filter the array element with no property name toRemove

 var list = [{ item1: 'Foo' }, { item2: 'Bar' }]; var toRemove = 'item1'; var result = list.filter(o => !(toRemove in o)); console.log(result); 

---

With removeObjectByKeyName function. The first parameter is the key to remove and the second is the array.

 let list = [{ item1: 'Foo' }, { item2: 'Bar' }]; let removeObjectByKeyName = (k, a) => a.filter(o => !(k in o)); let result = removeObjectByKeyName('item1', list); console.log(result); 

Answer 2

this function will do what you need:

var list = [{item1: 'Foo'}, {item2: 'Bar'}];

function removeObjectByKeyName(list, key) {
  return list.filter(item => !Object.keys(item).find(k => k === key) )
}

removeObjectByKeyName(list, 'item1') // [{item2: 'Bar'}]

Answer 3

You can use filter and hasOwnProperty

 var list = [{ item1: 'Foo' }, { item2: 'Bar' }]; var toRemove = 'item1'; var result = list.filter(o => !o.hasOwnProperty(toRemove)); console.log(result);