lodash 两个对象数组的差异

Question

useEffect我的reactJS中有以下代码

const A1 = [{id: 1, nome: "Ruan"}, {id: 2, nome: "Gleison"}]

const A2 = [{id: 2, nome: "Gleison"}, {id: 3, nome: "Geraldo"}]

const results = _.xor(A1, A2);

console.log(results)

lodashis的逻辑_.xor是返回两个数组之间的差异，但是，事实并非如此

我得到的回报如下

0: Object {id: 1, nome: "Ruan"}

1: Object {id: 2, nome: "Gleison"}

2: Object {id: 2, nome: "Gleison"}

3: Object {id: 3, nome: "Geraldo"}

我感谢所有提供帮助的努力

Answer 1

您可以使用xorBy来指示用于比较的属性：const A1 = [{id: 1, nome: "Ruan"}, {id: 2, nome: "Gleison"}]const A2 = [{id: 2, nome: "Gleison"}, {id: 3, nome: "Geraldo"}]const results = _.xorBy(A1, A2, 'id'); // or 'nome'console.log(results)<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.20/lodash.min.js"></script>

Answer 2

这是因为即使它们的内容相同，对象也不相等，因为它们在内存中的地址不同。你可以尝试这样的事情：const&nbsp;results&nbsp;=&nbsp;_.xor(A1.map(object=>&nbsp;JSON.stringify(object)),&nbsp;A2.map(object=>&nbsp;JSON.stringify(object))).map(item&nbsp;=>&nbsp;JSON.parse(item));